After "Arrays" chapter completed

annotations/AtUnitComposition.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Creating non-embedded tests.
+// Creating non-embedded tests
 package annotations;
 import onjava.atunit.*;
 import onjava.*;
@@ -16,7 +16,8 @@ public class AtUnitComposition {
   @Test boolean _methodTwo() {
     return testObject.methodTwo() == 2;
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitComposition.class");
   }

annotations/AtUnitExample1.java

@@ -22,7 +22,8 @@ public class AtUnitExample1 {
   // Shows output for failure:
   @Test boolean failureTest() { return false; }
   @Test boolean anotherDisappointment() { return false; }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExample1.class");
   }

annotations/AtUnitExample2.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Assertions and exceptions can be used in @Tests.
+// Assertions and exceptions can be used in @Tests
 package annotations;
 import java.io.*;
 import onjava.atunit.*;
@@ -30,7 +30,8 @@ public class AtUnitExample2 {
     assert methodTwo() == 2: "methodTwo must equal 2";
     return methodOne().equals("This is methodOne");
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExample2.class");
   }

annotations/AtUnitExample3.java

@@ -25,7 +25,8 @@ public class AtUnitExample3 {
     return methodOne().equals("This is methodOne");
   }
   @Test boolean m2() { return methodTwo() == 2; }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExample3.class");
   }

annotations/AtUnitExample4.java

@@ -16,10 +16,8 @@ public class AtUnitExample4 {
   public AtUnitExample4(String word) { this.word = word; }
   public String getWord() { return word; }
   public String scrambleWord() {
-    // <* Improve this: *>
+    List<Character> chars =
-    List<Character> chars = new ArrayList<>();
+      Arrays.asList(ConvertTo.boxed(word.toCharArray()));
-    for(Character c : word.toCharArray())
-      chars.add(c);
     Collections.shuffle(chars, rand);
     StringBuilder result = new StringBuilder();
     for(char ch : chars)
@@ -41,7 +39,7 @@ public class AtUnitExample4 {
     return getWord().equals("are");
   }
   @Test boolean scramble1() {
-    // Change to a specific seed to get verifiable results:
+    // Change to specific seed to get verifiable results:
     rand = new Random(47);
     System.out.println("'" + getWord() + "'");
     String scrambled = scrambleWord();
@@ -55,7 +53,8 @@ public class AtUnitExample4 {
     System.out.println(scrambled);
     return scrambled.equals("tsaeborornussu");
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     System.out.println("starting");
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExample4.class");
@@ -64,17 +63,13 @@ public class AtUnitExample4 {
 /* Output:
 starting
 annotations.AtUnitExample4
-  . words 'All'
+  . scramble1 'All'
-(failed)
+lAl
+
   . scramble2 'brontosauruses'
 tsaeborornussu
 
-  . scramble1 'are'
+  . words 'are'
-rae
-(failed)
-(3 tests)
 
->>> 2 FAILURES <<<
+OK (3 tests)
-  annotations.AtUnitExample4: words
-  annotations.AtUnitExample4: scramble1
 */

annotations/AtUnitExample5.java

@@ -40,7 +40,8 @@ public class AtUnitExample5 {
     output.print("test3");
     return true;
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExample5.class");
   }

annotations/AtUnitExternalTest.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Creating non-embedded tests.
+// Creating non-embedded tests
 package annotations;
 import onjava.atunit.*;
 import onjava.*;
@@ -12,7 +12,8 @@ public class AtUnitExternalTest extends AtUnitExample1 {
     return methodOne().equals("This is methodOne");
   }
   @Test boolean _methodTwo() { return methodTwo() == 2; }
-  public static void main(String[] args) throws Exception{
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit AtUnitExternalTest.class");
   }

annotations/HashSetTest.java

@@ -21,7 +21,8 @@ public class HashSetTest {
     testObject.remove("one");
     assert testObject.isEmpty();
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit HashSetTest.class");
   }

annotations/PasswordUtils.java

@@ -7,17 +7,17 @@ import java.util.*;
 public class PasswordUtils {
   @UseCase(id = 47, description =
   "Passwords must contain at least one numeric")
-  public boolean validatePassword(String password) {
+  public boolean validatePassword(String passwd) {
-    return (password.matches("\\w*\\d\\w*"));
+    return (passwd.matches("\\w*\\d\\w*"));
   }
   @UseCase(id = 48)
-  public String encryptPassword(String password) {
+  public String encryptPassword(String passwd) {
-   return new StringBuilder(password).reverse().toString();
+   return new StringBuilder(passwd).reverse().toString();
   }
   @UseCase(id = 49, description =
   "New passwords can't equal previously used ones")
   public boolean checkForNewPassword(
-    List<String> prevPasswords, String password) {
+    List<String> prevPasswords, String passwd) {
-    return !prevPasswords.contains(password);
+    return !prevPasswords.contains(passwd);
   }
 }

annotations/StackL.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// A stack built on a linkedList.
+// A stack built on a linkedList
 package annotations;
 import java.util.*;
 

annotations/StackLStringTest.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Applying @Unit to generics.
+// Applying @Unit to generics
 package annotations;
 import onjava.atunit.*;
 import onjava.*;
@@ -26,7 +26,8 @@ public class StackLStringTest extends StackL<String> {
     assert top().equals("B");
     assert top().equals("B");
   }
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     OSExecute.command("java -cp .. " +
       "onjava.atunit.AtUnit StackLStringTest.class");
   }

annotations/UseCaseTracker.java

@@ -17,7 +17,8 @@ public class UseCaseTracker {
       }
     }
     for(int i : useCases) {
-      System.out.println("Warning: Missing use case-" + i);
+      System.out.println(
+        "Warning: Missing use case-" + i);
     }
   }
   public static void main(String[] args) {

annotations/database/TableCreator.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Reflection-based annotation processor.
+// Reflection-based annotation processor
 // {Args: annotations.database.Member}
 package annotations.database;
 import java.lang.annotation.*;
@@ -10,7 +10,8 @@ import java.lang.reflect.*;
 import java.util.*;
 
 public class TableCreator {
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     if(args.length < 1) {
       System.out.println("arguments: annotated classes");
       System.exit(0);
@@ -30,7 +31,8 @@ public class TableCreator {
       List<String> columnDefs = new ArrayList<>();
       for(Field field : cl.getDeclaredFields()) {
         String columnName = null;
-        Annotation[] anns = field.getDeclaredAnnotations();
+        Annotation[] anns =
+          field.getDeclaredAnnotations();
         if(anns.length < 1)
           continue; // Not a db table column
         if(anns[0] instanceof SQLInteger) {
@@ -57,7 +59,8 @@ public class TableCreator {
         StringBuilder createCommand = new StringBuilder(
           "CREATE TABLE " + tableName + "(");
         for(String columnDef : columnDefs)
-          createCommand.append("\n    " + columnDef + ",");
+          createCommand.append(
+            "\n    " + columnDef + ",");
         // Remove trailing comma
         String tableCreate = createCommand.substring(
           0, createCommand.length() - 1) + ");";

annotations/database/Uniqueness.java

@@ -7,5 +7,5 @@ package annotations.database;
 
 public @interface Uniqueness {
   Constraints constraints()
-    default @Constraints(unique=true);
+    default @Constraints(unique = true);
 }

annotations/ifx/ExtractInterface.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// javac-based annotation processing.
+// javac-based annotation processing
 package annotations.ifx;
 import java.lang.annotation.*;
 

annotations/ifx/IfaceExtractorProcessor.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// javac-based annotation processing.
+// javac-based annotation processing
 package annotations.ifx;
 import javax.annotation.processing.*;
 import javax.lang.model.SourceVersion;
@@ -51,8 +51,8 @@ extends AbstractProcessor {
   private void
   writeInterfaceFile(String interfaceName) {
     try(Writer writer = processingEnv.getFiler()
-      .createSourceFile(interfaceName)
+          .createSourceFile(interfaceName)
-      .openWriter()) {
+          .openWriter()) {
       String packageName = elementUtils
         .getPackageOf(interfaceMethods
                       .get(0)).toString();

annotations/ifx/Multiplier.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// javac-based annotation processing.
+// javac-based annotation processing
 package annotations.ifx;
 
 @ExtractInterface(interfaceName="IMultiplier")

annotations/simplest/Simple.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// A bare-bones annotation.
+// A bare-bones annotation
 package annotations.simplest;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;

annotations/simplest/SimpleProcessor.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// A bare-bones annotation processor.
+// A bare-bones annotation processor
 package annotations.simplest;
 import javax.annotation.processing.*;
 import javax.lang.model.SourceVersion;

arrays/AlphabeticSearch.java

@@ -2,19 +2,20 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Searching with a Comparator.
+// Searching with a Comparator
 import java.util.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 public class AlphabeticSearch {
   public static void main(String[] args) {
-    String[] sa = Generated.array(new String[30],
+    String[] sa = new Rand.String().array(30);
-      new RandomSupplier.String(5));
     Arrays.sort(sa, String.CASE_INSENSITIVE_ORDER);
-    System.out.println(Arrays.toString(sa));
+    show(sa);
     int index = Arrays.binarySearch(sa, sa[10],
       String.CASE_INSENSITIVE_ORDER);
-    System.out.println("Index: "+ index + "\n"+ sa[index]);
+    System.out.println(
+      "Index: "+ index + "\n"+ sa[index]);
   }
 }
 /* Output:

arrays/ArrayCopying.java

@@ -0,0 +1,81 @@
+// arrays/ArrayCopying.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+// Demonstrate Arrays.copy() and Arrays.copyOf()
+import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+class Sup { // Superclass
+  private int id;
+  public Sup(int n) { id = n; }
+  @Override
+  public String toString() {
+    return getClass().getSimpleName() + id;
+  }
+}
+
+class Sub extends Sup { // Subclass
+  public Sub(int n) { super(n); }
+}
+
+public class ArrayCopying {
+  public static final int SZ = 15;
+  public static void main(String[] args) {
+    int[] a1 = new int[SZ];
+    Arrays.setAll(a1, new Count.Integer()::get);
+    show("a1", a1);
+    int[] a2 = Arrays.copyOf(a1, a1.length); // (1)
+    // Prove they are distinct arrays:
+    Arrays.fill(a1, 1);
+    show("a1", a1);
+    show("a2", a2);
+
+    // Create a shorter result:
+    a2 = Arrays.copyOf(a2, a2.length/2); // (2)
+    show("a2", a2);
+    // Allocate more space:
+    a2 = Arrays.copyOf(a2, a2.length + 5);
+    show("a2", a2);
+
+    // Also copies wrapped arrays:
+    Integer[] a3 = new Integer[SZ]; // (3)
+    Arrays.setAll(a3, new Count.Integer()::get);
+    Integer[] a4 = Arrays.copyOfRange(a3, 4, 12);
+    show("a4", a4);
+
+    Sub[] d = new Sub[SZ/2];
+    Arrays.setAll(d, Sub::new);
+    // Produce Sup[] from Sub[]:
+    Sup[] b =
+      Arrays.copyOf(d, d.length, Sup[].class); // (4)
+    show(b);
+
+    // This "downcast" works fine:
+    Sub[] d2 =
+      Arrays.copyOf(b, b.length, Sub[].class); // (5)
+    show(d2);
+
+    // Bad "downcast" compiles but throws exception:
+    Sup[] b2 = new Sup[SZ/2];
+    Arrays.setAll(b2, Sup::new);
+    try {
+      Sub[] d3 =
+        Arrays.copyOf(b2, b2.length, Sub[].class); // (6)
+    } catch(Exception e) {
+      System.out.println(e);
+    }
+  }
+}
+/* Output:
+a1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
+a1 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
+a2 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
+a2 = [0, 1, 2, 3, 4, 5, 6]
+a2 = [0, 1, 2, 3, 4, 5, 6, 0, 0, 0, 0, 0]
+a4 = [4, 5, 6, 7, 8, 9, 10, 11]
+[Sub0, Sub1, Sub2, Sub3, Sub4, Sub5, Sub6]
+[Sub0, Sub1, Sub2, Sub3, Sub4, Sub5, Sub6]
+java.lang.ArrayStoreException
+*/

arrays/ArrayOfGenericType.java

@@ -2,15 +2,15 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Arrays of generic types won't compile.
 
 public class ArrayOfGenericType<T> {
   T[] array; // OK
   @SuppressWarnings("unchecked")
   public ArrayOfGenericType(int size) {
-    //- array = new T[size]; // Illegal
+    // error: generic array creation:
-    array = (T[])new Object[size]; // "unchecked" Warning
+    // - array = new T[size];
+    array = (T[])new Object[size]; // unchecked cast
   }
-  // Illegal:
+  // error: generic array creation:
   //- public <U> U[] makeArray() { return new U[10]; }
 }

arrays/ArrayOfGenerics.java

@@ -2,7 +2,6 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// It is possible to create arrays of generics.
 import java.util.*;
 
 public class ArrayOfGenerics {
@@ -10,10 +9,14 @@ public class ArrayOfGenerics {
   public static void main(String[] args) {
     List<String>[] ls;
     List[] la = new List[10];
-    ls = (List<String>[])la; // "Unchecked" warning
+    ls = (List<String>[])la; // Unchecked cast
     ls[0] = new ArrayList<>();
-    // Compile-time checking produces an error:
+
-    //- ls[1] = new ArrayList<Integer>();
+    // -ls[1] = new ArrayList<Integer>();
+    // error: incompatible types: ArrayList<Integer>
+    // cannot be converted to List<String>
+    //     ls[1] = new ArrayList<Integer>();
+    //             ^
 
     // The problem: List<String> is a subtype of Object
     Object[] objects = ls; // So assignment is OK
@@ -22,10 +25,9 @@ public class ArrayOfGenerics {
 
     // However, if your needs are straightforward it is
     // possible to create an array of generics, albeit
-    // with an "unchecked" warning:
+    // with an "unchecked cast" warning:
     List<BerylliumSphere>[] spheres =
       (List<BerylliumSphere>[])new List[10];
-    for(int i = 0; i < spheres.length; i++)
+    Arrays.setAll(spheres, n -> new ArrayList<>());
-      spheres[i] = new ArrayList<>();
   }
 }

arrays/ArrayOptions.java

@@ -2,8 +2,9 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Initialization & re-assignment of arrays.
+// Initialization & re-assignment of arrays
 import java.util.*;
+import static onjava.ArrayShow.*;
 
 public class ArrayOptions {
   public static void main(String[] args) {
@@ -13,23 +14,25 @@ public class ArrayOptions {
 
     // The references inside the array are
     // automatically initialized to null:
-    System.out.println("b: " + Arrays.toString(b));
+    show("b", b);
     BerylliumSphere[] c = new BerylliumSphere[4];
     for(int i = 0; i < c.length; i++)
       if(c[i] == null) // Can test for null reference
         c[i] = new BerylliumSphere();
 
     // Aggregate initialization:
-    BerylliumSphere[] d = { new BerylliumSphere(),
+    BerylliumSphere[] d = {
-      new BerylliumSphere(), new BerylliumSphere()
+      new BerylliumSphere(),
+      new BerylliumSphere(),
+      new BerylliumSphere()
     };
 
     // Dynamic aggregate initialization:
     a = new BerylliumSphere[]{
       new BerylliumSphere(), new BerylliumSphere(),
     };
+    // (Trailing comma is optional)
 
-    // (Trailing comma is optional in both cases)
     System.out.println("a.length = " + a.length);
     System.out.println("b.length = " + b.length);
     System.out.println("c.length = " + c.length);
@@ -43,14 +46,14 @@ public class ArrayOptions {
 
     // The primitives inside the array are
     // automatically initialized to zero:
-    System.out.println("f: " + Arrays.toString(f));
+    show("f", f);
     int[] g = new int[4];
     for(int i = 0; i < g.length; i++)
       g[i] = i*i;
     int[] h = { 11, 47, 93 };
 
     //  Compile error: variable e not initialized:
-    //- print("e.length = " + e.length);
+    //- System.out.println("e.length = " + e.length);
     System.out.println("f.length = " + f.length);
     System.out.println("g.length = " + g.length);
     System.out.println("h.length = " + h.length);

arrays/ArraySearching.java

@@ -2,35 +2,32 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Using Arrays.binarySearch().
+// Using Arrays.binarySearch()
 import java.util.*;
-import java.util.function.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 public class ArraySearching {
   public static void main(String[] args) {
-    Supplier<Integer> gen =
+    Rand.int_ rand = new Rand.int_();
-      new RandomSupplier.Integer(1000);
+    int[] a = new Rand.int_().array(25);
-    int[] a = ConvertTo.primitive(
-      Generated.array(new Integer[25], gen));
     Arrays.sort(a);
-    System.out.println(
+    show("Sorted array", a);
-      "Sorted array: " + Arrays.toString(a));
     while(true) {
-      int r = gen.get();
+      int r = rand.getAsInt();
       int location = Arrays.binarySearch(a, r);
       if(location >= 0) {
         System.out.println(
           "Location of " + r + " is " + location +
-          ", a[" + location + "] = " + a[location]);
+          ", a[" + location + "] is " + a[location]);
         break; // Out of while loop
       }
     }
   }
 }
 /* Output:
-Sorted array: [128, 140, 200, 207, 258, 258, 278, 288, 322,
+Sorted array: [125, 267, 635, 650, 1131, 1506, 1634,
-429, 511, 520, 522, 551, 555, 589, 693, 704, 809, 861, 861,
+2400, 2766, 3063, 3768, 3941, 4720, 4762, 4948, 5070,
-868, 916, 961, 998]
+5682, 5807, 6177, 6193, 6656, 7021, 8479, 8737, 9954]
-Location of 322 is 8, a[8] = 322
+Location of 635 is 2, a[2] is 635
 */

arrays/AssemblingMultidimensionalArrays.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Creating multidimensional arrays.
+// Creating multidimensional arrays
 import java.util.*;
 
 public class AssemblingMultidimensionalArrays {

arrays/BadMicroBenchmark.java

@@ -0,0 +1,21 @@
+// arrays/BadMicroBenchmark.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import static onjava.TimeIt.*;
+
+public class BadMicroBenchmark {
+  static final int SIZE = 20_000_000;
+  public static void main(String[] args) {
+    long[] la = new long[SIZE];
+    System.out.print("setAll: ");
+    timeIt(() -> Arrays.setAll(la, n -> n));
+    System.out.print("parallelSetAll: ");
+    timeIt(() -> Arrays.parallelSetAll(la, n -> n));
+  }
+}
+/* Output:
+setAll: 27
+parallelSetAll: 53
+*/

arrays/BadMicroBenchmark2.java

@@ -0,0 +1,22 @@
+// arrays/BadMicroBenchmark2.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+// Reversing the test order
+import java.util.*;
+import static onjava.TimeIt.*;
+
+public class BadMicroBenchmark2 {
+  static final int SIZE = 20_000_000;
+  public static void main(String[] args) {
+    long[] la = new long[SIZE];
+    System.out.print("parallelSetAll: ");
+    timeIt(() -> Arrays.parallelSetAll(la, n -> n));
+    System.out.print("setAll: ");
+    timeIt(() -> Arrays.setAll(la, n -> n));
+  }
+}
+/* Output:
+parallelSetAll: 38
+setAll: 63
+*/

arrays/BadMicroBenchmark3.java

@@ -0,0 +1,34 @@
+// arrays/BadMicroBenchmark3.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+// Relying on a common resource
+import java.util.*;
+import static onjava.TimeIt.*;
+
+public class BadMicroBenchmark3 {
+  static final int SIZE = 20_000_000;
+  public static void main(String[] args) {
+    long[] la = new long[SIZE];
+    Random r = new Random();
+    System.out.print("parallelSetAll: ");
+    timeIt(() ->
+      Arrays.parallelSetAll(la, n -> r.nextLong()));
+    System.out.print("setAll: ");
+    timeIt(() ->
+      Arrays.setAll(la, n -> r.nextLong()));
+    SplittableRandom sr = new SplittableRandom();
+    System.out.print("parallelSetAll: ");
+    timeIt(() ->
+      Arrays.parallelSetAll(la, n -> sr.nextLong()));
+    System.out.print("setAll: ");
+    timeIt(() ->
+      Arrays.setAll(la, n -> sr.nextLong()));
+  }
+}
+/* Output:
+parallelSetAll: 5150
+setAll: 649
+parallelSetAll: 277
+setAll: 246
+*/

arrays/CollectionComparison.java

@@ -3,6 +3,8 @@
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
 import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
 
 class BerylliumSphere {
   private static long counter;
@@ -16,17 +18,16 @@ public class CollectionComparison {
     BerylliumSphere[] spheres = new BerylliumSphere[10];
     for(int i = 0; i < 5; i++)
       spheres[i] = new BerylliumSphere();
-    System.out.println(Arrays.toString(spheres));
+    show(spheres);
     System.out.println(spheres[4]);
 
-    List<BerylliumSphere> sphereList= new ArrayList<>();
+    List<BerylliumSphere> sphereList = Suppliers.create(
-    for(int i = 0; i < 5; i++)
+      ArrayList::new, BerylliumSphere::new, 5);
-      sphereList.add(new BerylliumSphere());
     System.out.println(sphereList);
     System.out.println(sphereList.get(4));
 
     int[] integers = { 0, 1, 2, 3, 4, 5 };
-    System.out.println(Arrays.toString(integers));
+    show(integers);
     System.out.println(integers[4]);
 
     List<Integer> intList = new ArrayList<>(

arrays/CompType.java

@@ -2,10 +2,11 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Implementing Comparable in a class.
+// Implementing Comparable in a class
 import java.util.*;
 import java.util.function.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 public class CompType implements Comparable<CompType> {
   int i;
@@ -26,19 +27,17 @@ public class CompType implements Comparable<CompType> {
   public int compareTo(CompType rv) {
     return (i < rv.i ? -1 : (i == rv.i ? 0 : 1));
   }
-  private static Random r = new Random(47);
+  private static SplittableRandom r =
-  public static Supplier<CompType> generator() {
+    new SplittableRandom(47);
-    return () ->
+  public static CompType get() {
-      new CompType(r.nextInt(100), r.nextInt(100));
+    return new CompType(r.nextInt(100), r.nextInt(100));
   }
   public static void main(String[] args) {
-    CompType[] a =
+    CompType[] a = new CompType[12];
-      Generated.array(new CompType[12], generator());
+    Arrays.setAll(a, n -> get());
-    System.out.println("before sorting:");
+    show("Before sorting", a);
-    System.out.println(Arrays.toString(a));
     Arrays.sort(a);
-    System.out.println("after sorting:");
+    show("After sorting", a);
-    System.out.println(Arrays.toString(a));
   }
 }
 /* Output:

arrays/ComparatorTest.java

@@ -2,9 +2,10 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Implementing a Comparator for a class.
+// Implementing a Comparator for a class
 import java.util.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 class CompTypeComparator implements Comparator<CompType> {
   public int compare(CompType o1, CompType o2) {
@@ -14,13 +15,11 @@ class CompTypeComparator implements Comparator<CompType> {
 
 public class ComparatorTest {
   public static void main(String[] args) {
-    CompType[] a = Generated.array(
+    CompType[] a = new CompType[12];
-      new CompType[12], CompType.generator());
+    Arrays.setAll(a, n -> CompType.get());
-    System.out.println("before sorting:");
+    show("Before sorting", a);
-    System.out.println(Arrays.toString(a));
     Arrays.sort(a, new CompTypeComparator());
-    System.out.println("after sorting:");
+    show("After sorting", a);
-    System.out.println(Arrays.toString(a));
   }
 }
 /* Output:

arrays/ComparingArrays.java

@@ -4,25 +4,57 @@
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
 // Using Arrays.equals()
 import java.util.*;
+import onjava.*;
 
 public class ComparingArrays {
+  public static final int SZ = 15;
+  static String[][] TwoDArray() {
+    String[][] md = new String[5][];
+    Arrays.setAll(md, n -> new String[n]);
+    for(int i = 0; i < md.length; i++)
+      Arrays.setAll(md[i], new Rand.String()::get);
+    return md;
+  }
   public static void main(String[] args) {
-    int[] a1 = new int[10];
+    int[] a1 = new int[SZ], a2 = new int[SZ];
-    int[] a2 = new int[10];
+    Arrays.setAll(a1, new Count.Integer()::get);
-    Arrays.fill(a1, 47);
+    Arrays.setAll(a2, new Count.Integer()::get);
-    Arrays.fill(a2, 47);
+    System.out.println(
-    System.out.println(Arrays.equals(a1, a2));
+      "a1 == a2: " + Arrays.equals(a1, a2));
     a2[3] = 11;
-    System.out.println(Arrays.equals(a1, a2));
+    System.out.println(
-    String[] s1 = new String[4];
+      "a1 == a2: " + Arrays.equals(a1, a2));
-    Arrays.fill(s1, "Hi");
+
-    String[] s2 = { new String("Hi"), new String("Hi"),
+    Integer[] a1w = new Integer[SZ],
-      new String("Hi"), new String("Hi") };
+      a2w = new Integer[SZ];
-    System.out.println(Arrays.equals(s1, s2));
+    Arrays.setAll(a1w, new Count.Integer()::get);
+    Arrays.setAll(a2w, new Count.Integer()::get);
+    System.out.println(
+      "a1w == a2w: " + Arrays.equals(a1w, a2w));
+    a2w[3] = 11;
+    System.out.println(
+      "a1w == a2w: " + Arrays.equals(a1w, a2w));
+
+    String[][] md1 = TwoDArray(), md2 = TwoDArray();
+    System.out.println(Arrays.deepToString(md1));
+    System.out.println("deepEquals(md1, md2): " +
+      Arrays.deepEquals(md1, md2));
+    System.out.println(
+      "md1 == md2: " + Arrays.equals(md1, md2));
+    md1[4][1] = "#$#$#$#";
+    System.out.println(Arrays.deepToString(md1));
+    System.out.println("deepEquals(md1, md2): " +
+      Arrays.deepEquals(md1, md2));
   }
 }
 /* Output:
-true
+a1 == a2: true
-false
+a1 == a2: false
-true
+a1w == a2w: true
+a1w == a2w: false
+[[], [YNzbrny], [YNzbrny, GcFOWZn], [YNzbrny, GcFOWZn, TcQrGse], [YNzbrny, GcFOWZn, TcQrGse, GZMmJMR]]
+deepEquals(md1, md2): true
+md1 == md2: false
+[[], [YNzbrny], [YNzbrny, GcFOWZn], [YNzbrny, GcFOWZn, TcQrGse], [YNzbrny, #$#$#$#, TcQrGse, GZMmJMR]]
+deepEquals(md1, md2): false
 */

arrays/CopyingArrays.java

@@ -1,45 +0,0 @@
-// arrays/CopyingArrays.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Using System.arraycopy()
-import java.util.*;
-
-public class CopyingArrays {
-  public static void main(String[] args) {
-    int[] i = new int[7];
-    int[] j = new int[10];
-    Arrays.fill(i, 47);
-    Arrays.fill(j, 99);
-    System.out.println("i = " + Arrays.toString(i));
-    System.out.println("j = " + Arrays.toString(j));
-    System.arraycopy(i, 0, j, 0, i.length);
-    System.out.println("j = " + Arrays.toString(j));
-    int[] k = new int[5];
-    Arrays.fill(k, 103);
-    System.arraycopy(i, 0, k, 0, k.length);
-    System.out.println("k = " + Arrays.toString(k));
-    Arrays.fill(k, 103);
-    System.arraycopy(k, 0, i, 0, k.length);
-    System.out.println("i = " + Arrays.toString(i));
-    // Objects:
-    Integer[] u = new Integer[10];
-    Integer[] v = new Integer[5];
-    Arrays.fill(u, 47);
-    Arrays.fill(v, 99);
-    System.out.println("u = " + Arrays.toString(u));
-    System.out.println("v = " + Arrays.toString(v));
-    System.arraycopy(v, 0, u, u.length/2, v.length);
-    System.out.println("u = " + Arrays.toString(u));
-  }
-}
-/* Output:
-i = [47, 47, 47, 47, 47, 47, 47]
-j = [99, 99, 99, 99, 99, 99, 99, 99, 99, 99]
-j = [47, 47, 47, 47, 47, 47, 47, 99, 99, 99]
-k = [47, 47, 47, 47, 47]
-i = [103, 103, 103, 103, 103, 47, 47]
-u = [47, 47, 47, 47, 47, 47, 47, 47, 47, 47]
-v = [99, 99, 99, 99, 99]
-u = [47, 47, 47, 47, 47, 99, 99, 99, 99, 99]
-*/

arrays/CountUpward.java

@@ -0,0 +1,23 @@
+// arrays/CountUpward.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import java.util.stream.*;
+import static onjava.ArrayShow.*;
+
+public class CountUpward {
+  static long[] fillCounted(int size) {
+    return LongStream.iterate(0, i -> i + 1)
+      .limit(size).toArray();
+  }
+  public static void main(String[] args) {
+    long[] l1 = fillCounted(20); // No problem
+    show(l1);
+    // On my machine, this runs out of heap space:
+    //- long[] l2 = fillCounted(10_000_000);
+  }
+}
+/* Output:
+[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
+*/

arrays/FillingArrays.java

@@ -4,6 +4,7 @@
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
 // Using Arrays.fill()
 import java.util.*;
+import static onjava.ArrayShow.*;
 
 public class FillingArrays {
   public static void main(String[] args) {
@@ -18,26 +19,26 @@ public class FillingArrays {
     double[] a8 = new double[size];
     String[] a9 = new String[size];
     Arrays.fill(a1, true);
-    System.out.println("a1 = " + Arrays.toString(a1));
+    show("a1", a1);
     Arrays.fill(a2, (byte)11);
-    System.out.println("a2 = " + Arrays.toString(a2));
+    show("a2", a2);
     Arrays.fill(a3, 'x');
-    System.out.println("a3 = " + Arrays.toString(a3));
+    show("a3", a3);
     Arrays.fill(a4, (short)17);
-    System.out.println("a4 = " + Arrays.toString(a4));
+    show("a4", a4);
     Arrays.fill(a5, 19);
-    System.out.println("a5 = " + Arrays.toString(a5));
+    show("a5", a5);
     Arrays.fill(a6, 23);
-    System.out.println("a6 = " + Arrays.toString(a6));
+    show("a6", a6);
     Arrays.fill(a7, 29);
-    System.out.println("a7 = " + Arrays.toString(a7));
+    show("a7", a7);
     Arrays.fill(a8, 47);
-    System.out.println("a8 = " + Arrays.toString(a8));
+    show("a8", a8);
     Arrays.fill(a9, "Hello");
-    System.out.println("a9 = " + Arrays.toString(a9));
+    show("a9", a9);
     // Manipulating ranges:
     Arrays.fill(a9, 3, 5, "World");
-    System.out.println("a9 = " + Arrays.toString(a9));
+    show("a9", a9);
   }
 }
 /* Output:

arrays/IceCream.java

@@ -2,11 +2,13 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Returning arrays from methods.
+// Returning arrays from methods
 import java.util.*;
+import static onjava.ArrayShow.*;
 
 public class IceCream {
-  private static Random rand = new Random(47);
+  private static SplittableRandom rand =
+    new SplittableRandom(47);
   static final String[] FLAVORS = {
     "Chocolate", "Strawberry", "Vanilla Fudge Swirl",
     "Mint Chip", "Mocha Almond Fudge", "Rum Raisin",
@@ -29,7 +31,7 @@ public class IceCream {
   }
   public static void main(String[] args) {
     for(int i = 0; i < 7; i++)
-      System.out.println(Arrays.toString(flavorSet(3)));
+      show(flavorSet(3));
   }
 }
 /* Output:

arrays/ModifyExisting.java

@@ -0,0 +1,21 @@
+// arrays/ModifyExisting.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+public class ModifyExisting {
+  public static void main(String[] args) {
+    double[] da = new double[7];
+    Arrays.setAll(da, new Rand.Double()::get);
+    show(da);
+    Arrays.setAll(da, n -> da[n] / 100); // (1)
+    show(da);
+  }
+}
+/* Output:
+[0.73, 0.53, 0.16, 0.19, 0.52, 0.27, 0.26]
+[0.0073, 0.0053, 0.0016, 0.0019, 0.0052, 0.0027, 0.0026]
+*/

arrays/MultiDimWrapperArray.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Multidimensional arrays of "wrapper" objects.
+// Multidimensional arrays of "wrapper" objects
 import java.util.*;
 
 public class MultiDimWrapperArray {

arrays/MultidimensionalPrimitiveArray.java

@@ -2,7 +2,6 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Creating multidimensional arrays.
 import java.util.*;
 
 public class MultidimensionalPrimitiveArray {

arrays/ParallelPrefix.java

@@ -0,0 +1,22 @@
+// arrays/ParallelPrefix.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+
+public class ParallelPrefix {
+  static final int SIZE = 20_000_000;
+  public static void main(String[] args) {
+    long[] nums = new long[SIZE];
+    Arrays.setAll(nums, n -> n);
+    Arrays.parallelPrefix(nums, Long::sum);
+    System.out.println("First 20: " + nums[19]);
+    System.out.println("First 200: " + nums[199]);
+    System.out.println("All: " + nums[nums.length-1]);
+  }
+}
+/* Output:
+First 20: 190
+First 200: 19900
+All: 199999990000000
+*/

arrays/ParallelSetAll.java

@@ -0,0 +1,24 @@
+// arrays/ParallelSetAll.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+
+public class ParallelSetAll {
+  static final int SIZE = 20_000_000;
+  static void intArray() {
+    int[] ia = new int[SIZE];
+    Arrays.setAll(ia, new Rand.int_()::get);
+    Arrays.parallelSetAll(ia, new Rand.int_()::get);
+  }
+  static void longArray() {
+    long[] la = new long[SIZE];
+    Arrays.setAll(la, new Rand.long_()::get);
+    Arrays.parallelSetAll(la, new Rand.long_()::get);
+  }
+  public static void main(String[] args) {
+    intArray();
+    longArray();
+  }
+}

arrays/ParallelSort.java

@@ -0,0 +1,26 @@
+// arrays/ParallelSort.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import java.time.*;
+import onjava.*;
+import static onjava.TimeIt.*;
+
+public class ParallelSort {
+  static final int SZ = 10_000_000;
+  public static void main(String[] args) {
+    int[] ia1 = new Rand.int_().array(SZ);
+    int[] ia2 = Arrays.copyOf(ia1, ia1.length);
+    System.out.print("sort(): ");
+    long millis1 = timeIt(() -> Arrays.sort(ia1));
+    System.out.print("parallelSort(): ");
+    long millis2 = timeIt(() -> Arrays.parallelSort(ia2));
+    System.out.println(millis1/millis2);
+  }
+}
+/* Output:
+sort(): 484
+parallelSort(): 149
+3
+*/

arrays/Prefix1.java

@@ -0,0 +1,27 @@
+// arrays/Prefix1.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+public class Prefix1 {
+  public static void main(String[] args) {
+    int[] nums = new Count.int_().array(10);
+    show(nums);
+    System.out.println(Arrays.stream(nums)
+      .reduce(Integer::sum).getAsInt());
+    Arrays.parallelPrefix(nums, Integer::sum);
+    show(nums);
+    System.out.println(Arrays.stream(
+      new Count.int_().array(6))
+      .reduce(Integer::sum).getAsInt());
+  }
+}
+/* Output:
+[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+45
+[0, 1, 3, 6, 10, 15, 21, 28, 36, 45]
+15
+*/

arrays/Prefix2.java

@@ -0,0 +1,20 @@
+// arrays/Prefix2.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+public class Prefix2 {
+  public static void main(String[] args) {
+    String[] strings = new Rand.String(1).array(8);
+    show(strings);
+    Arrays.parallelPrefix(strings, (a, b) -> a + b);
+    show(strings);
+  }
+}
+/* Output:
+[b, t, p, e, n, p, c, c]
+[b, bt, btp, btpe, btpen, btpenp, btpenpc, btpenpcc]
+*/

arrays/PrimitiveConversionDemonstration.java

@@ -1,23 +0,0 @@
-// arrays/PrimitiveConversionDemonstration.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-import java.util.*;
-import onjava.*;
-
-public class PrimitiveConversionDemonstration {
-  public static void main(String[] args) {
-    Integer[] a = Generated.array(Integer.class,
-        new CountingSupplier.Integer(), 15);
-    int[] b = ConvertTo.primitive(a);
-    System.out.println(Arrays.toString(b));
-    boolean[] c = ConvertTo.primitive(
-      Generated.array(Boolean.class,
-        new CountingSupplier.Boolean(), 7));
-    System.out.println(Arrays.toString(c));
-  }
-}
-/* Output:
-[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
-[true, false, true, false, true, false, true]
-*/

arrays/PythonLists.py

@@ -24,3 +24,13 @@ class MyList(list): # Inherit from list
 list2 = MyList(aList)
 print(type(list2)) # <class '__main__.MyList'>
 print(list2.getReversed()) # [8, 7, 6, 5, 4, 3, 2, 1]
+
+output = """
+<class 'list'>
+[1, 2, 3, 4, 5]
+5
+[1, 2, 3, 4, 5, 6, 7, 8]
+[3, 4]
+<class '__main__.MyList'>
+[8, 7, 6, 5, 4, 3, 2, 1]
+"""

arrays/RaggedArray.java

@@ -5,20 +5,23 @@
 import java.util.*;
 
 public class RaggedArray {
+  static int val = 1;
   public static void main(String[] args) {
-    Random rand = new Random(47);
+    SplittableRandom rand = new SplittableRandom(47);
     // 3-D array with varied-length vectors:
     int[][][] a = new int[rand.nextInt(7)][][];
     for(int i = 0; i < a.length; i++) {
       a[i] = new int[rand.nextInt(5)][];
-      for(int j = 0; j < a[i].length; j++)
+      for(int j = 0; j < a[i].length; j++) {
         a[i][j] = new int[rand.nextInt(5)];
+        Arrays.setAll(a[i][j], n -> val++); // (1)
+      }
     }
     System.out.println(Arrays.deepToString(a));
   }
 }
 /* Output:
-[[], [[0], [0], [0, 0, 0, 0]], [[], [0, 0], [0, 0]], [[0,
+[[], [[1], [2], [3, 4, 5, 6]], [[], [7, 8], [9, 10]],
-0, 0], [0], [0, 0, 0, 0]], [[0, 0, 0], [0, 0, 0], [0], []],
+[[11, 12, 13], [14], [15, 16, 17, 18]], [[19, 20, 21],
-[[0], [], [0]]]
+[22, 23, 24], [25], []], [[26], [], [27]]]
 */

arrays/RandomSuppliersTest.java

@@ -1,25 +0,0 @@
-// arrays/RandomSuppliersTest.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-import onjava.*;
-
-public class RandomSuppliersTest {
-  public static void main(String[] args) {
-    SuppliersTest.test(RandomSupplier.class);
-  }
-}
-/* Output:
-Double: 0.73 0.53 0.16 0.19 0.52 0.27 0.26 0.05 0.8 0.76
-Float: 0.53 0.16 0.53 0.4 0.49 0.25 0.8 0.11 0.02 0.8
-Long: 7674 8804 8950 7826 4322 896 8033 2984 2344 5810
-Integer: 8303 3141 7138 6012 9966 8689 7185 6992 5746 3976
-Short: 3358 20592 284 26791 12834 -8092 13656 29324 -1423
-5327
-String: bkInaMe sbtWHkj UrUkZPg wsqPzDy CyRFJQA HxxHvHq
-XumcXZJ oogoYWM NvqeuTp nXsgqia
-Character: x x E A J J m z M s
-Byte: -60 -17 55 -14 -5 115 39 -37 79 115
-Boolean: false true false false true true true true true
-true
-*/

arrays/Reverse.java

@@ -5,16 +5,15 @@
 // The Collections.reverseOrder() Comparator
 import java.util.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 public class Reverse {
   public static void main(String[] args) {
-    CompType[] a = Generated.array(
+    CompType[] a = new CompType[12];
-      new CompType[12], CompType.generator());
+    Arrays.setAll(a, n -> CompType.get());
-    System.out.println("before sorting:");
+    show("Before sorting", a);
-    System.out.println(Arrays.toString(a));
     Arrays.sort(a, Collections.reverseOrder());
-    System.out.println("after sorting:");
+    show("After sorting", a);
-    System.out.println(Arrays.toString(a));
   }
 }
 /* Output:

arrays/SimpleSetAll.java

@@ -0,0 +1,56 @@
+// arrays/SimpleSetAll.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import static onjava.ArrayShow.*;
+
+class Bob {
+  final int id;
+  public Bob(int n) { id = n; }
+  @Override
+  public String toString() { return "Bob" + id; }
+}
+
+public class SimpleSetAll {
+  public static final int SZ = 8;
+  public static int val = 1;
+  static char[] chars = "abcdefghijklmnopqrstuvwxyz"
+    .toCharArray();
+  static char getChar(int n) { return chars[n]; }
+  public static void main(String[] args) {
+    int[] ia = new int[SZ];
+    long[] la = new long[SZ];
+    double[] da = new double[SZ];
+    Arrays.setAll(ia, n -> n); // (1)
+    Arrays.setAll(la, n -> n);
+    Arrays.setAll(da, n -> n);
+    show(ia);
+    show(la);
+    show(da);
+    Arrays.setAll(ia, n -> val++); // (2)
+    Arrays.setAll(la, n -> val++);
+    Arrays.setAll(da, n -> val++);
+    show(ia);
+    show(la);
+    show(da);
+
+    Bob[] ba = new Bob[SZ];
+    Arrays.setAll(ba, Bob::new); // (3)
+    show(ba);
+
+    Character[] ca = new Character[SZ];
+    Arrays.setAll(ca, SimpleSetAll::getChar); // (4)
+    show(ca);
+  }
+}
+/* Output:
+[0, 1, 2, 3, 4, 5, 6, 7]
+[0, 1, 2, 3, 4, 5, 6, 7]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]
+[1, 2, 3, 4, 5, 6, 7, 8]
+[9, 10, 11, 12, 13, 14, 15, 16]
+[17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0]
+[Bob0, Bob1, Bob2, Bob3, Bob4, Bob5, Bob6, Bob7]
+[a, b, c, d, e, f, g, h]
+*/

arrays/StreamFromArray.java

@@ -0,0 +1,51 @@
+// arrays/StreamFromArray.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+
+public class StreamFromArray {
+  public static void main(String[] args) {
+    String[] s = new Rand.String().array(10);
+    Arrays.stream(s)
+      .skip(3)
+      .limit(5)
+      .map(ss -> ss + "!")
+      .forEach(System.out::println);
+
+    int[] ia = new Rand.int_().array(10);
+    Arrays.stream(ia)
+      .skip(3)
+      .limit(5)
+      .map(i -> i * 10)
+      .forEach(System.out::println);
+
+    Arrays.stream(new long[10]);
+    Arrays.stream(new double[10]);
+
+    // Only int, long and double work:
+    //- Arrays.stream(new boolean[10]);
+    //- Arrays.stream(new byte[10]);
+    //- Arrays.stream(new char[10]);
+    //- Arrays.stream(new short[10]);
+    //- Arrays.stream(new float[10]);
+
+    // For the other types you must use wrapped arrays:
+    float[] fa = new Rand.float_().array(10);
+    Arrays.stream(ConvertTo.boxed(fa));
+    Arrays.stream(new Rand.Float().array(10));
+  }
+}
+/* Output:
+eloztdv!
+ewcippc!
+ygpoalk!
+ljlbynx!
+taprwxz!
+47200
+61770
+84790
+66560
+37680
+*/

arrays/StringSorting.java

@@ -2,25 +2,21 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Sorting an array of Strings.
+// Sorting an array of Strings
 import java.util.*;
 import onjava.*;
+import static onjava.ArrayShow.*;
 
 public class StringSorting {
   public static void main(String[] args) {
-    String[] sa = Generated.array(new String[20],
+    String[] sa = new Rand.String().array(20);
-      new RandomSupplier.String(5));
+    show("Before sort", sa);
-    System.out.println(
-      "Before sort: " + Arrays.toString(sa));
     Arrays.sort(sa);
-    System.out.println(
+    show("After sort", sa);
-      "After sort: " + Arrays.toString(sa));
     Arrays.sort(sa, Collections.reverseOrder());
-    System.out.println(
+    show("Reverse sort", sa);
-      "Reverse sort: " + Arrays.toString(sa));
     Arrays.sort(sa, String.CASE_INSENSITIVE_ORDER);
-    System.out.println(
+    show("Case-insensitive sort", sa);
-      "Case-insensitive sort: " + Arrays.toString(sa));
   }
 }
 /* Output:

arrays/SuppliersTest.java

@@ -1,40 +0,0 @@
-// arrays/SuppliersTest.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-import java.util.function.*;
-import onjava.*;
-
-public class SuppliersTest {
-  public static int size = 10;
-  public static void test(Class<?> surroundingClass) {
-    for(Class<?> type : surroundingClass.getClasses()) {
-      System.out.print(type.getSimpleName() + ": ");
-      try {
-        Supplier<?> g = (Supplier<?>)type.newInstance();
-        for(int i = 0; i < size; i++)
-          System.out.printf(g.get() + " ");
-        System.out.println();
-      } catch(InstantiationException |
-              IllegalAccessException e) {
-        throw new RuntimeException(e);
-      }
-    }
-  }
-  public static void main(String[] args) {
-    test(CountingSupplier.class);
-  }
-}
-/* Output:
-Double: 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
-Float: 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
-Long: 0 1 2 3 4 5 6 7 8 9
-Integer: 0 1 2 3 4 5 6 7 8 9
-Short: 0 1 2 3 4 5 6 7 8 9
-String: abcdefg hijklmn opqrstu vwxyzAB CDEFGHI JKLMNOP
-QRSTUVW XYZabcd efghijk lmnopqr
-Character: a b c d e f g h i j
-Byte: 0 1 2 3 4 5 6 7 8 9
-Boolean: true false true false true false true false true
-false
-*/

arrays/TestArrayGeneration.java

@@ -1,48 +0,0 @@
-// arrays/TestArrayGeneration.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Test the tools that use generators to fill arrays.
-import java.util.*;
-import onjava.*;
-
-public class TestArrayGeneration {
-  public static void main(String[] args) {
-    int size = 6;
-    boolean[] a1 = ConvertTo.primitive(Generated.array(
-      Boolean.class, new RandomSupplier.Boolean(), size));
-    System.out.println("a1 = " + Arrays.toString(a1));
-    byte[] a2 = ConvertTo.primitive(Generated.array(
-      Byte.class, new RandomSupplier.Byte(), size));
-    System.out.println("a2 = " + Arrays.toString(a2));
-    char[] a3 = ConvertTo.primitive(Generated.array(
-      Character.class,
-      new RandomSupplier.Character(), size));
-    System.out.println("a3 = " + Arrays.toString(a3));
-    short[] a4 = ConvertTo.primitive(Generated.array(
-      Short.class, new RandomSupplier.Short(), size));
-    System.out.println("a4 = " + Arrays.toString(a4));
-    int[] a5 = ConvertTo.primitive(Generated.array(
-      Integer.class, new RandomSupplier.Integer(), size));
-    System.out.println("a5 = " + Arrays.toString(a5));
-    long[] a6 = ConvertTo.primitive(Generated.array(
-      Long.class, new RandomSupplier.Long(), size));
-    System.out.println("a6 = " + Arrays.toString(a6));
-    float[] a7 = ConvertTo.primitive(Generated.array(
-      Float.class, new RandomSupplier.Float(), size));
-    System.out.println("a7 = " + Arrays.toString(a7));
-    double[] a8 = ConvertTo.primitive(Generated.array(
-      Double.class, new RandomSupplier.Double(), size));
-    System.out.println("a8 = " + Arrays.toString(a8));
-  }
-}
-/* Output:
-a1 = [true, false, true, false, false, true]
-a2 = [104, -79, -76, 126, 33, -64]
-a3 = [Z, n, T, c, Q, r]
-a4 = [-13408, 22612, 15401, 15161, -28466, -12603]
-a5 = [7704, 7383, 7706, 575, 8410, 6342]
-a6 = [7674, 8804, 8950, 7826, 4322, 896]
-a7 = [0.01, 0.2, 0.4, 0.79, 0.27, 0.45]
-a8 = [0.16, 0.87, 0.7, 0.66, 0.87, 0.59]
-*/

arrays/TestConvertTo.java

@@ -0,0 +1,87 @@
+// arrays/TestConvertTo.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+import static onjava.ConvertTo.*;
+
+public class TestConvertTo {
+  static final int size = 6;
+  public static void main(String[] args) {
+    Boolean[] a1 = new Boolean[size];
+    Arrays.setAll(a1, new Rand.Boolean()::get);
+    boolean[] a1p = primitive(a1);
+    show("a1p", a1p);
+    Boolean[] a1b = boxed(a1p);
+    show("a1b", a1b);
+
+    Byte[] a2 = new Byte[size];
+    Arrays.setAll(a2, new Rand.Byte()::get);
+    byte[] a2p = primitive(a2);
+    show("a2p", a2p);
+    Byte[] a2b = boxed(a2p);
+    show("a2b", a2b);
+
+    Character[] a3 = new Character[size];
+    Arrays.setAll(a3, new Rand.Character()::get);
+    char[] a3p = primitive(a3);
+    show("a3p", a3p);
+    Character[] a3b = boxed(a3p);
+    show("a3b", a3b);
+
+    Short[] a4 = new Short[size];
+    Arrays.setAll(a4, new Rand.Short()::get);
+    short[] a4p = primitive(a4);
+    show("a4p", a4p);
+    Short[] a4b = boxed(a4p);
+    show("a4b", a4b);
+
+    Integer[] a5 = new Integer[size];
+    Arrays.setAll(a5, new Rand.Integer()::get);
+    int[] a5p = primitive(a5);
+    show("a5p", a5p);
+    Integer[] a5b = boxed(a5p);
+    show("a5b", a5b);
+
+    Long[] a6 = new Long[size];
+    Arrays.setAll(a6, new Rand.Long()::get);
+    long[] a6p = primitive(a6);
+    show("a6p", a6p);
+    Long[] a6b = boxed(a6p);
+    show("a6b", a6b);
+
+    Float[] a7 = new Float[size];
+    Arrays.setAll(a7, new Rand.Float()::get);
+    float[] a7p = primitive(a7);
+    show("a7p", a7p);
+    Float[] a7b = boxed(a7p);
+    show("a7b", a7b);
+
+    Double[] a8 = new Double[size];
+    Arrays.setAll(a8, new Rand.Double()::get);
+    double[] a8p = primitive(a8);
+    show("a8p", a8p);
+    Double[] a8b = boxed(a8p);
+    show("a8b", a8b);
+  }
+}
+/* Output:
+a1p: [true, false, true, true, true, false]
+a1b: [true, false, true, true, true, false]
+a2p: [123, 33, 101, 112, 33, 31]
+a2b: [123, 33, 101, 112, 33, 31]
+a3p: [b, t, p, e, n, p]
+a3b: [b, t, p, e, n, p]
+a4p: [635, 8737, 3941, 4720, 6177, 8479]
+a4b: [635, 8737, 3941, 4720, 6177, 8479]
+a5p: [635, 8737, 3941, 4720, 6177, 8479]
+a5b: [635, 8737, 3941, 4720, 6177, 8479]
+a6p: [6882, 3765, 692, 9575, 4439, 2638]
+a6b: [6882, 3765, 692, 9575, 4439, 2638]
+a7p: [4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+a7b: [4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+a8p: [4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+a8b: [4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+*/

arrays/TestCount.java

@@ -0,0 +1,140 @@
+// arrays/TestCount.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+// Test counting generators
+import java.util.*;
+import java.util.stream.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+public class TestCount {
+  static final int SZ = 5;
+  public static void main(String[] args) {
+    System.out.println("Boolean");
+    Boolean[] a1 = new Boolean[SZ];
+    Arrays.setAll(a1, new Count.Boolean()::get);
+    show(a1);
+    show(Stream.generate(new Count.Boolean())
+      .limit(SZ + 1).toArray());
+    show(new Count.Boolean().array(SZ + 2));
+    show(new Count.boolean_().array(SZ + 3));
+
+    System.out.println("Byte");
+    Byte[] a2 = new Byte[SZ];
+    Arrays.setAll(a2, new Count.Byte()::get);
+    show(a2);
+    show(Stream.generate(new Count.Byte())
+      .limit(SZ + 1).toArray());
+    show(new Count.Byte().array(SZ + 2));
+    show(new Count.byte_().array(SZ + 3));
+
+    System.out.println("Character");
+    Character[] a3 = new Character[SZ];
+    Arrays.setAll(a3, new Count.Character()::get);
+    show(a3);
+    show(Stream.generate(new Count.Character())
+      .limit(SZ + 1).toArray());
+    show(new Count.Character().array(SZ + 2));
+    show(new Count.char_().array(SZ + 3));
+
+    System.out.println("Short");
+    Short[] a4 = new Short[SZ];
+    Arrays.setAll(a4, new Count.Short()::get);
+    show(a4);
+    show(Stream.generate(new Count.Short())
+      .limit(SZ + 1).toArray());
+    show(new Count.Short().array(SZ + 2));
+    show(new Count.short_().array(SZ + 3));
+
+    System.out.println("Integer");
+    int[] a5 = new int[SZ];
+    Arrays.setAll(a5, new Count.Integer()::get);
+    show(a5);
+    show(Stream.generate(new Count.Integer())
+      .limit(SZ + 1).toArray());
+    show(new Count.Integer().array(SZ + 2));
+    a5 = IntStream.generate(new Count.int_())
+      .limit(SZ + 1).toArray();
+    show(a5);
+    show(new Count.int_().array(SZ + 3));
+
+    System.out.println("Long");
+    long[] a6 = new long[SZ];
+    Arrays.setAll(a6, new Count.Long()::get);
+    show(a6);
+    show(Stream.generate(new Count.Long())
+      .limit(SZ + 1).toArray());
+    show(new Count.Long().array(SZ + 2));
+    a6 = LongStream.generate(new Count.long_())
+      .limit(SZ + 1).toArray();
+    show(a6);
+    show(new Count.long_().array(SZ + 3));
+
+    System.out.println("Float");
+    Float[] a7 = new Float[SZ];
+    Arrays.setAll(a7, new Count.Float()::get);
+    show(a7);
+    show(Stream.generate(new Count.Float())
+      .limit(SZ + 1).toArray());
+    show(new Count.Float().array(SZ + 2));
+    show(new Count.float_().array(SZ + 3));
+
+    System.out.println("Double");
+    double[] a8 = new double[SZ];
+    Arrays.setAll(a8, new Count.Double()::get);
+    show(a8);
+    show(Stream.generate(new Count.Double())
+      .limit(SZ + 1).toArray());
+    show(new Count.Double().array(SZ + 2));
+    a8 = DoubleStream.generate(new Count.double_())
+      .limit(SZ + 1).toArray();
+    show(a8);
+    show(new Count.double_().array(SZ + 3));
+  }
+}
+/* Output:
+Boolean
+[false, true, false, true, false]
+[false, true, false, true, false, true]
+[false, true, false, true, false, true, false]
+[false, true, false, true, false, true, false, true]
+Byte
+[0, 1, 2, 3, 4]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6]
+[0, 1, 2, 3, 4, 5, 6, 7]
+Character
+[b, c, d, e, f]
+[b, c, d, e, f, g]
+[b, c, d, e, f, g, h]
+[b, c, d, e, f, g, h, i]
+Short
+[0, 1, 2, 3, 4]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6]
+[0, 1, 2, 3, 4, 5, 6, 7]
+Integer
+[0, 1, 2, 3, 4]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6, 7]
+Long
+[0, 1, 2, 3, 4]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6]
+[0, 1, 2, 3, 4, 5]
+[0, 1, 2, 3, 4, 5, 6, 7]
+Float
+[0.0, 1.0, 2.0, 3.0, 4.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]
+Double
+[0.0, 1.0, 2.0, 3.0, 4.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0]
+[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]
+*/

arrays/TestGenerated.java

@@ -1,23 +0,0 @@
-// arrays/TestGenerated.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-import java.util.*;
-import onjava.*;
-
-public class TestGenerated {
-  public static void main(String[] args) {
-    Integer[] a = { 9, 8, 7, 6 };
-    System.out.println(Arrays.toString(a));
-    a = Generated.array(a, new CountingSupplier.Integer());
-    System.out.println(Arrays.toString(a));
-    Integer[] b = Generated.array(Integer.class,
-        new CountingSupplier.Integer(), 15);
-    System.out.println(Arrays.toString(b));
-  }
-}
-/* Output:
-[9, 8, 7, 6]
-[0, 1, 2, 3]
-[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
-*/

arrays/TestRand.java

@@ -0,0 +1,161 @@
+// arrays/TestRand.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+// Test random generators
+import java.util.*;
+import java.util.stream.*;
+import onjava.*;
+import static onjava.ArrayShow.*;
+
+public class TestRand {
+  static final int SZ = 5;
+  public static void main(String[] args) {
+    System.out.println("Boolean");
+    Boolean[] a1 = new Boolean[SZ];
+    Arrays.setAll(a1, new Rand.Boolean()::get);
+    show(a1);
+    show(Stream.generate(new Rand.Boolean())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Boolean().array(SZ + 2));
+    show(new Rand.boolean_().array(SZ + 3));
+
+    System.out.println("Byte");
+    Byte[] a2 = new Byte[SZ];
+    Arrays.setAll(a2, new Rand.Byte()::get);
+    show(a2);
+    show(Stream.generate(new Rand.Byte())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Byte().array(SZ + 2));
+    show(new Rand.byte_().array(SZ + 3));
+
+    System.out.println("Character");
+    Character[] a3 = new Character[SZ];
+    Arrays.setAll(a3, new Rand.Character()::get);
+    show(a3);
+    show(Stream.generate(new Rand.Character())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Character().array(SZ + 2));
+    show(new Rand.char_().array(SZ + 3));
+
+    System.out.println("Short");
+    Short[] a4 = new Short[SZ];
+    Arrays.setAll(a4, new Rand.Short()::get);
+    show(a4);
+    show(Stream.generate(new Rand.Short())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Short().array(SZ + 2));
+    show(new Rand.short_().array(SZ + 3));
+
+    System.out.println("Integer");
+    int[] a5 = new int[SZ];
+    Arrays.setAll(a5, new Rand.Integer()::get);
+    show(a5);
+    show(Stream.generate(new Rand.Integer())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Integer().array(SZ + 2));
+    a5 = IntStream.generate(new Rand.int_())
+      .limit(SZ + 1).toArray();
+    show(a5);
+    show(new Rand.int_().array(SZ + 3));
+
+    System.out.println("Long");
+    long[] a6 = new long[SZ];
+    Arrays.setAll(a6, new Rand.Long()::get);
+    show(a6);
+    show(Stream.generate(new Rand.Long())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Long().array(SZ + 2));
+    a6 = LongStream.generate(new Rand.long_())
+      .limit(SZ + 1).toArray();
+    show(a6);
+    show(new Rand.long_().array(SZ + 3));
+
+    System.out.println("Float");
+    Float[] a7 = new Float[SZ];
+    Arrays.setAll(a7, new Rand.Float()::get);
+    show(a7);
+    show(Stream.generate(new Rand.Float())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Float().array(SZ + 2));
+    show(new Rand.float_().array(SZ + 3));
+
+    System.out.println("Double");
+    double[] a8 = new double[SZ];
+    Arrays.setAll(a8, new Rand.Double()::get);
+    show(a8);
+    show(Stream.generate(new Rand.Double())
+      .limit(SZ + 1).toArray());
+    show(new Rand.Double().array(SZ + 2));
+    a8 = DoubleStream.generate(new Rand.double_())
+      .limit(SZ + 2).toArray();
+    show(a8);
+    show(new Rand.double_().array(SZ + 3));
+
+    System.out.println("String");
+    String[] s = new String[SZ - 1];
+    Arrays.setAll(s, new Rand.String()::get);
+    show(s);
+    show(Stream.generate(new Rand.String())
+      .limit(SZ).toArray());
+    show(new Rand.String().array(SZ + 1));
+
+    Arrays.setAll(s, new Rand.String(4)::get);
+    show(s);
+    show(Stream.generate(new Rand.String(4))
+      .limit(SZ).toArray());
+    show(new Rand.String(4).array(SZ + 1));
+  }
+}
+/* Output:
+Boolean
+[true, false, true, true, true]
+[true, false, true, true, true, false]
+[true, false, true, true, true, false, false]
+[true, false, true, true, true, false, false, true]
+Byte
+[123, 33, 101, 112, 33]
+[123, 33, 101, 112, 33, 31]
+[123, 33, 101, 112, 33, 31, 0]
+[123, 33, 101, 112, 33, 31, 0, -72]
+Character
+[b, t, p, e, n]
+[b, t, p, e, n, p]
+[b, t, p, e, n, p, c]
+[b, t, p, e, n, p, c, c]
+Short
+[635, 8737, 3941, 4720, 6177]
+[635, 8737, 3941, 4720, 6177, 8479]
+[635, 8737, 3941, 4720, 6177, 8479, 6656]
+[635, 8737, 3941, 4720, 6177, 8479, 6656, 3768]
+Integer
+[635, 8737, 3941, 4720, 6177]
+[635, 8737, 3941, 4720, 6177, 8479]
+[635, 8737, 3941, 4720, 6177, 8479, 6656]
+[635, 8737, 3941, 4720, 6177, 8479]
+[635, 8737, 3941, 4720, 6177, 8479, 6656, 3768]
+Long
+[6882, 3765, 692, 9575, 4439]
+[6882, 3765, 692, 9575, 4439, 2638]
+[6882, 3765, 692, 9575, 4439, 2638, 4011]
+[6882, 3765, 692, 9575, 4439, 2638]
+[6882, 3765, 692, 9575, 4439, 2638, 4011, 9610]
+Float
+[4.83, 2.89, 2.9, 1.97, 3.01]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18, 0.99]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18, 0.99, 8.28]
+Double
+[4.83, 2.89, 2.9, 1.97, 3.01]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18, 0.99]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18, 0.99]
+[4.83, 2.89, 2.9, 1.97, 3.01, 0.18, 0.99, 8.28]
+String
+[btpenpc, cuxszgv, gmeinne, eloztdv]
+[btpenpc, cuxszgv, gmeinne, eloztdv, ewcippc]
+[btpenpc, cuxszgv, gmeinne, eloztdv, ewcippc, ygpoalk]
+[btpe, npcc, uxsz, gvgm]
+[btpe, npcc, uxsz, gvgm, einn]
+[btpe, npcc, uxsz, gvgm, einn, eelo]
+*/

arrays/build.xml

@@ -8,59 +8,79 @@
 
   <target name="run" description="Compile and run" depends="build">
     <jrun cls="AlphabeticSearch" />
+    <jrun cls="ArrayCopying" />
     <jrun cls="ArrayOfGenerics" />
     <jrun cls="ArrayOptions" />
     <jrun cls="ArraySearching" />
     <jrun cls="AssemblingMultidimensionalArrays" />
     <jrun cls="AutoboxingArrays" />
+    <jrun cls="BadMicroBenchmark" />
+    <jrun cls="BadMicroBenchmark2" />
+    <jrun cls="BadMicroBenchmark3" />
     <jrun cls="CollectionComparison" />
     <jrun cls="ComparatorTest" />
     <jrun cls="ComparingArrays" />
     <jrun cls="CompType" />
-    <jrun cls="CopyingArrays" />
+    <jrun cls="CountUpward" />
     <jrun cls="FillingArrays" />
     <jrun cls="IceCream" />
+    <jrun cls="ModifyExisting" />
     <jrun cls="MultidimensionalObjectArrays" />
     <jrun cls="MultidimensionalPrimitiveArray" />
     <jrun cls="MultiDimWrapperArray" />
+    <jrun cls="ParallelPrefix" />
+    <jrun cls="ParallelSetAll" />
+    <jrun cls="ParallelSort" />
     <jrun cls="ParameterizedArrayType" />
-    <jrun cls="PrimitiveConversionDemonstration" />
+    <jrun cls="Prefix1" />
+    <jrun cls="Prefix2" />
     <jrun cls="RaggedArray" />
-    <jrun cls="RandomSuppliersTest" />
     <jrun cls="Reverse" />
+    <jrun cls="SimpleSetAll" />
+    <jrun cls="StreamFromArray" />
     <jrun cls="StringSorting" />
-    <jrun cls="SuppliersTest" />
+    <jrun cls="TestConvertTo" />
-    <jrun cls="TestArrayGeneration" />
+    <jrun cls="TestCount" />
-    <jrun cls="TestGenerated" />
+    <jrun cls="TestRand" />
     <jrun cls="ThreeDWithNew" />
   </target>
 
   <target name="runconsole" description="Compile and run" depends="build">
     <jrunconsole cls="AlphabeticSearch" />
+    <jrunconsole cls="ArrayCopying" />
     <jrunconsole cls="ArrayOfGenerics" />
     <jrunconsole cls="ArrayOptions" />
     <jrunconsole cls="ArraySearching" />
     <jrunconsole cls="AssemblingMultidimensionalArrays" />
     <jrunconsole cls="AutoboxingArrays" />
+    <jrunconsole cls="BadMicroBenchmark" />
+    <jrunconsole cls="BadMicroBenchmark2" />
+    <jrunconsole cls="BadMicroBenchmark3" />
     <jrunconsole cls="CollectionComparison" />
     <jrunconsole cls="ComparatorTest" />
     <jrunconsole cls="ComparingArrays" />
     <jrunconsole cls="CompType" />
-    <jrunconsole cls="CopyingArrays" />
+    <jrunconsole cls="CountUpward" />
     <jrunconsole cls="FillingArrays" />
     <jrunconsole cls="IceCream" />
+    <jrunconsole cls="ModifyExisting" />
     <jrunconsole cls="MultidimensionalObjectArrays" />
     <jrunconsole cls="MultidimensionalPrimitiveArray" />
     <jrunconsole cls="MultiDimWrapperArray" />
+    <jrunconsole cls="ParallelPrefix" />
+    <jrunconsole cls="ParallelSetAll" />
+    <jrunconsole cls="ParallelSort" />
     <jrunconsole cls="ParameterizedArrayType" />
-    <jrunconsole cls="PrimitiveConversionDemonstration" />
+    <jrunconsole cls="Prefix1" />
+    <jrunconsole cls="Prefix2" />
     <jrunconsole cls="RaggedArray" />
-    <jrunconsole cls="RandomSuppliersTest" />
     <jrunconsole cls="Reverse" />
+    <jrunconsole cls="SimpleSetAll" />
+    <jrunconsole cls="StreamFromArray" />
     <jrunconsole cls="StringSorting" />
-    <jrunconsole cls="SuppliersTest" />
+    <jrunconsole cls="TestConvertTo" />
-    <jrunconsole cls="TestArrayGeneration" />
+    <jrunconsole cls="TestCount" />
-    <jrunconsole cls="TestGenerated" />
+    <jrunconsole cls="TestRand" />
     <jrunconsole cls="ThreeDWithNew" />
   </target>
 

assertions/Assert2.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Assert with an informative message
+// Assert with an information-expression
 // {JVMArgs: -ea}
 // {ThrowsException}
 

assertions/Queue.java

@@ -2,8 +2,8 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Demonstration of Design by Contract (DbC) combined
+// Demonstration of Design by Contract (DbC)
-// with white-box unit testing.
+// combined with white-box unit testing
 // (Install libraries from www.junit.org)
 import java.util.*;
 import org.junit.Test;
@@ -24,7 +24,8 @@ public class Queue {
   }
   public Queue(int size) {
     data = new Object[size];
-    assert invariant(); // Must be true after construction
+    // Must be true after construction:
+    assert invariant();
   }
   public boolean empty() {
     return !wrapped && in == out;

build.xml

@@ -42,7 +42,7 @@
       files/build.xml
       enums/build.xml
       annotations/build.xml
-      concurrency/build.xml
+      tasks/build.xml
       ui/build.xml
       swt/build.xml
       patterns/build.xml
@@ -86,7 +86,7 @@
       files/build.xml
       enums/build.xml
       annotations/build.xml
-      concurrency/build.xml
+      tasks/build.xml
       patterns/build.xml
       unittesting/build.xml
       assertions/build.xml

collections/AdapterMethodIdiom.java

@@ -3,17 +3,21 @@
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
 // The "Adapter Method" idiom uses for-in
-// with additional kinds of Iterables.
+// with additional kinds of Iterables
 import java.util.*;
 
 class ReversibleArrayList<T> extends ArrayList<T> {
-  public ReversibleArrayList(Collection<T> c) { super(c); }
+  public ReversibleArrayList(Collection<T> c) {
+    super(c);
+  }
   public Iterable<T> reversed() {
     return new Iterable<T>() {
       public Iterator<T> iterator() {
         return new Iterator<T>() {
           int current = size() - 1;
-          public boolean hasNext() { return current > -1; }
+          public boolean hasNext() {
+            return current > -1;
+          }
           public T next() { return get(current--); }
           public void remove() { // Not implemented
             throw new UnsupportedOperationException();

collections/AddingGroups.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Adding groups of elements to Collection objects.
+// Adding groups of elements to Collection objects
 import java.util.*;
 
 public class AddingGroups {
@@ -16,9 +16,9 @@ public class AddingGroups {
     Collections.addAll(collection, 11, 12, 13, 14, 15);
     Collections.addAll(collection, moreInts);
     // Produces a list "backed by" an array:
-    List<Integer> list = Arrays.asList(16, 17, 18, 19, 20);
+    List<Integer> list = Arrays.asList(16,17,18,19,20);
     list.set(1, 99); // OK -- modify an element
-    // list.add(21); // Runtime error because the
+    // list.add(21); // Runtime error; the underlying
-                     // underlying array cannot be resized.
+                     // array cannot be resized.
   }
 }

collections/ApplesAndOrangesWithGenerics.java

@@ -14,16 +14,10 @@ public class ApplesAndOrangesWithGenerics {
     for(Apple apple : apples) {
       System.out.println(apple.id());
     }
-    // Using for-in:
-    for(Apple c : apples)
-      System.out.println(c.id());
   }
 }
 /* Output:
 0
 1
 2
-0
-1
-2
 */

collections/ApplesAndOrangesWithoutGenerics.java

@@ -20,7 +20,7 @@ public class ApplesAndOrangesWithoutGenerics {
     ArrayList apples = new ArrayList();
     for(int i = 0; i < 3; i++)
       apples.add(new Apple());
-    // Not prevented from adding an Orange to apples:
+    // No problem adding an Orange to apples:
     apples.add(new Orange());
     for(Object apple : apples) {
       ((Apple) apple).id();

collections/AsListInference.java

@@ -2,7 +2,6 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Arrays.asList() makes its best guess about type.
 import java.util.*;
 
 class Snow {}
@@ -16,21 +15,20 @@ public class AsListInference {
   public static void main(String[] args) {
     List<Snow> snow1 = Arrays.asList(
       new Crusty(), new Slush(), new Powder());
+    //- snow1.add(new Heavy()); // Exception
 
-    // Won't compile:
+    List<Snow> snow2 = Arrays.asList(
-    // List<Snow> snow2 = Arrays.asList(
+      new Light(), new Heavy());
-    //   new Light(), new Heavy());
+    //- snow2.add(new Slush()); // Exception
-    // Compiler says:
-    // found   : java.util.List<Powder>
-    // required: java.util.List<Snow>
 
-    // Collections.addAll() doesn't get confused:
     List<Snow> snow3 = new ArrayList<>();
-    Collections.addAll(snow3, new Light(), new Heavy());
+    Collections.addAll(snow3,
+      new Light(), new Heavy(), new Powder());
+    snow3.add(new Crusty());
 
-    // Give a hint using an
+    // Hint with explicit type argument specification:
-    // explicit type argument specification:
     List<Snow> snow4 = Arrays.<Snow>asList(
-       new Light(), new Heavy());
+       new Light(), new Heavy(), new Slush());
+    //- snow4.add(new Powder()); // Exception
   }
 }

collections/CrossCollectionIteration2.java

@@ -0,0 +1,33 @@
+// collections/CrossCollectionIteration2.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import typeinfo.pets.*;
+import java.util.*;
+
+public class CrossCollectionIteration2 {
+  public static void display(Iterable<Pet> ip) {
+    Iterator<Pet> it = ip.iterator();
+    while(it.hasNext()) {
+      Pet p = it.next();
+      System.out.print(p.id() + ":" + p + " ");
+    }
+    System.out.println();
+  }
+  public static void main(String[] args) {
+    List<Pet> pets = Pets.list(8);
+    LinkedList<Pet> petsLL = new LinkedList<>(pets);
+    HashSet<Pet> petsHS = new HashSet<>(pets);
+    TreeSet<Pet> petsTS = new TreeSet<>(pets);
+    display(pets);
+    display(petsLL);
+    display(petsHS);
+    display(petsTS);
+  }
+}
+/* Output:
+0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
+0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
+0:Rat 1:Manx 2:Cymric 3:Mutt 4:Pug 5:Cymric 6:Pug 7:Manx
+5:Cymric 2:Cymric 7:Manx 1:Manx 3:Mutt 6:Pug 4:Pug 0:Rat
+*/

collections/ForInCollections.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// All collections work with for-in.
+// All collections work with for-in
 import java.util.*;
 
 public class ForInCollections {

collections/GenericsAndUpcasting.java

@@ -16,8 +16,8 @@ public class GenericsAndUpcasting {
     apples.add(new Gala());
     apples.add(new Fuji());
     apples.add(new Braeburn());
-    for(Apple c : apples)
+    for(Apple apple : apples)
-      System.out.println(c);
+      System.out.println(apple);
   }
 }
 /* Output:

collections/IterableClass.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Anything Iterable works with for-in.
+// Anything Iterable works with for-in
 import java.util.*;
 
 public class IterableClass implements Iterable<String> {

collections/ListFeatures.java

@@ -16,7 +16,8 @@ public class ListFeatures {
     System.out.println("3: " + pets.contains(h));
     pets.remove(h); // Remove by object
     Pet p = pets.get(2);
-    System.out.println("4: " +  p + " " + pets.indexOf(p));
+    System.out.println(
+      "4: " +  p + " " + pets.indexOf(p));
     Pet cymric = new Cymric();
     System.out.println("5: " + pets.indexOf(cymric));
     System.out.println("6: " + pets.remove(cymric));

collections/MapOfList.java

@@ -11,7 +11,9 @@ public class MapOfList {
     petPeople = new HashMap<>();
   static {
     petPeople.put(new Person("Dawn"),
-      Arrays.asList(new Cymric("Molly"), new Mutt("Spot")));
+      Arrays.asList(
+        new Cymric("Molly"),
+        new Mutt("Spot")));
     petPeople.put(new Person("Kate"),
       Arrays.asList(new Cat("Shackleton"),
         new Cat("Elsie May"), new Dog("Margrett")));

collections/MultiIterableClass.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Adding several Adapter Methods.
+// Adding several Adapter Methods
 import java.util.*;
 
 public class MultiIterableClass extends IterableClass {
@@ -11,8 +11,12 @@ public class MultiIterableClass extends IterableClass {
       public Iterator<String> iterator() {
         return new Iterator<String>() {
           int current = words.length - 1;
-          public boolean hasNext() { return current > -1; }
+          public boolean hasNext() {
-          public String next() { return words[current--]; }
+            return current > -1;
+          }
+          public String next() {
+            return words[current--];
+          }
           public void remove() { // Not implemented
             throw new UnsupportedOperationException();
           }

collections/NonCollectionSequence.java

@@ -26,7 +26,8 @@ public class NonCollectionSequence extends PetSequence {
     };
   }
   public static void main(String[] args) {
-    NonCollectionSequence nc = new NonCollectionSequence();
+    NonCollectionSequence nc =
+      new NonCollectionSequence();
     InterfaceVsIterator.display(nc.iterator());
   }
 }

collections/PrintingCollections.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Collections print themselves automatically.
+// Collections print themselves automatically
 import java.util.*;
 
 public class PrintingCollections {

collections/QueueDemo.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Upcasting to a Queue from a LinkedList.
+// Upcasting to a Queue from a LinkedList
 import java.util.*;
 
 public class QueueDemo {

collections/SetOfString.java

@@ -0,0 +1,25 @@
+// collections/SetOfString.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+
+public class SetOfString {
+  public static void main(String[] args) {
+    Set<String> colors = new HashSet<>();
+    for(int i = 0; i < 100; i++) {
+      colors.add("Yellow");
+      colors.add("Blue");
+      colors.add("Red");
+      colors.add("Red");
+      colors.add("Orange");
+      colors.add("Yellow");
+      colors.add("Blue");
+      colors.add("Purple");
+    }
+    System.out.println(colors);
+  }
+}
+/* Output:
+[Red, Yellow, Blue, Purple, Orange]
+*/

collections/SortedSetOfInteger.java

@@ -1,19 +0,0 @@
-// collections/SortedSetOfInteger.java
-// (c)2016 MindView LLC: see Copyright.txt
-// We make no guarantees that this code is fit for any purpose.
-// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-import java.util.*;
-
-public class SortedSetOfInteger {
-  public static void main(String[] args) {
-    Random rand = new Random(47);
-    SortedSet<Integer> intset = new TreeSet<>();
-    for(int i = 0; i < 10000; i++)
-      intset.add(rand.nextInt(30));
-    System.out.println(intset);
-  }
-}
-/* Output:
-[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
-17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29]
-*/

collections/SortedSetOfString.java

@@ -0,0 +1,25 @@
+// collections/SortedSetOfString.java
+// (c)2016 MindView LLC: see Copyright.txt
+// We make no guarantees that this code is fit for any purpose.
+// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
+import java.util.*;
+
+public class SortedSetOfString {
+  public static void main(String[] args) {
+    Set<String> colors = new TreeSet<>();
+    for(int i = 0; i < 100; i++) {
+      colors.add("Yellow");
+      colors.add("Blue");
+      colors.add("Red");
+      colors.add("Red");
+      colors.add("Orange");
+      colors.add("Yellow");
+      colors.add("Blue");
+      colors.add("Purple");
+    }
+    System.out.println(colors);
+  }
+}
+/* Output:
+[Blue, Orange, Purple, Red, Yellow]
+*/

collections/Statistics.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Simple demonstration of HashMap.
+// Simple demonstration of HashMap
 import java.util.*;
 
 public class Statistics {
@@ -12,7 +12,7 @@ public class Statistics {
     for(int i = 0; i < 10000; i++) {
       // Produce a number between 0 and 20:
       int r = rand.nextInt(20);
-      Integer freq = m.get(r);
+      Integer freq = m.get(r); // (1)
       m.put(r, freq == null ? 1 : freq + 1);
     }
     System.out.println(m);

collections/UniqueWords.java

@@ -6,7 +6,8 @@ import java.util.*;
 import java.nio.file.*;
 
 public class UniqueWords {
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     List<String> lines =
       Files.readAllLines(Paths.get("SetOperations.java"));
     Set<String> words = new TreeSet<>();

collections/UniqueWordsAlphabetic.java

@@ -2,12 +2,13 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Producing an alphabetic listing.
+// Producing an alphabetic listing
 import java.util.*;
 import java.nio.file.*;
 
 public class UniqueWordsAlphabetic {
-  public static void main(String[] args) throws Exception {
+  public static void
+  main(String[] args) throws Exception {
     List<String> lines =
       Files.readAllLines(Paths.get("SetOperations.java"));
     Set<String> words =

collections/build.xml

@@ -16,6 +16,7 @@
     <jrun cls="CollectionMethods" />
     <jrun cls="CollectionSequence" />
     <jrun cls="CrossCollectionIteration" />
+    <jrun cls="CrossCollectionIteration2" />
     <jrun cls="EnvironmentVariables" />
     <jrun cls="ForInCollections" />
     <jrun cls="GenericsAndUpcasting" />
@@ -33,10 +34,11 @@
     <jrun cls="PriorityQueueDemo" />
     <jrun cls="QueueDemo" />
     <jrun cls="SetOfInteger" />
+    <jrun cls="SetOfString" />
     <jrun cls="SetOperations" />
     <jrun cls="SimpleCollection" />
     <jrun cls="SimpleIteration" />
-    <jrun cls="SortedSetOfInteger" />
+    <jrun cls="SortedSetOfString" />
     <jrun cls="StackCollision" />
     <jrun cls="StackTest" />
     <jrun cls="Statistics" />
@@ -54,6 +56,7 @@
     <jrunconsole cls="CollectionMethods" />
     <jrunconsole cls="CollectionSequence" />
     <jrunconsole cls="CrossCollectionIteration" />
+    <jrunconsole cls="CrossCollectionIteration2" />
     <jrunconsole cls="EnvironmentVariables" />
     <jrunconsole cls="ForInCollections" />
     <jrunconsole cls="GenericsAndUpcasting" />
@@ -71,10 +74,11 @@
     <jrunconsole cls="PriorityQueueDemo" />
     <jrunconsole cls="QueueDemo" />
     <jrunconsole cls="SetOfInteger" />
+    <jrunconsole cls="SetOfString" />
     <jrunconsole cls="SetOperations" />
     <jrunconsole cls="SimpleCollection" />
     <jrunconsole cls="SimpleIteration" />
-    <jrunconsole cls="SortedSetOfInteger" />
+    <jrunconsole cls="SortedSetOfString" />
     <jrunconsole cls="StackCollision" />
     <jrunconsole cls="StackTest" />
     <jrunconsole cls="Statistics" />

collectionsindepth/AssociativeArray.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Associates keys with values.
+// Associates keys with values
 
 public class AssociativeArray<K, V> {
   private Object[][] pairs;

collectionsindepth/Bits.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Demonstration of BitSet.
+// Demonstration of BitSet
 import java.util.*;
 
 public class Bits {
@@ -14,7 +14,7 @@ public class Bits {
     System.out.println("bit pattern: " + bbits);
   }
   public static void main(String[] args) {
-    Random rand = new Random(47);
+    SplittableRandom rand = new SplittableRandom(47);
     // Take the LSB of nextInt():
     byte bt = (byte)rand.nextInt();
     BitSet bb = new BitSet();

collectionsindepth/CanonicalMapping.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Demonstrates WeakHashMap.
+// Demonstrates WeakHashMap
 import java.util.*;
 
 class Element {

collectionsindepth/CollectionMethods.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Things you can do with all Collections.
+// Things you can do with all Collections
 import java.util.*;
 import onjava.*;
 

collectionsindepth/CountedString.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Creating a good hashCode().
+// Creating a good hashCode()
 import java.util.*;
 
 public class CountedString {

collectionsindepth/Enumerations.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Java 1.0/1.1 Vector and Enumeration.
+// Java 1.0/1.1 Vector and Enumeration
 import java.util.*;
 import onjava.*;
 

collectionsindepth/FailFast.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Demonstrates the "fail-fast" behavior.
+// Demonstrates the "fail-fast" behavior
 import java.util.*;
 
 public class FailFast {

collectionsindepth/FilledCollectionGeneration.java

@@ -1,19 +1,19 @@
-// collectionsindepth/CollectionDataGeneration.java
+// collectionsindepth/FilledCollectionGeneration.java
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Using the Suppliers defined in the Arrays chapter.
+// Using the Suppliers defined in the Arrays chapter
 import java.util.*;
 import onjava.*;
 
-public class CollectionDataGeneration {
+public class FilledCollectionGeneration {
   public static void main(String[] args) {
     System.out.println(new ArrayList<>(
-      CollectionData.list( // Convenience method
+      FilledCollection.list( // Convenience method
-        new RandomSupplier.String(9), 10)));
+        new Rand.String(9), 10)));
     System.out.println(new HashSet<>(
-      new CollectionData<>(
+      new FilledCollection<>(
-        new RandomSupplier.Integer(), 10)));
+        new Rand.Integer(), 10)));
   }
 }
 /* Output:

collectionsindepth/FilledCollectionTest.java

@@ -1,4 +1,4 @@
-// collectionsindepth/CollectionDataTest.java
+// collectionsindepth/FilledCollectionTest.java
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
@@ -15,12 +15,13 @@ class Government implements Supplier<String> {
   public String get() { return foundation[index++]; }
 }
 
-public class CollectionDataTest {
+public class FilledCollectionTest {
   public static void main(String[] args) {
     Set<String> set = new LinkedHashSet<>(
-      new CollectionData<>(new Government(), 15));
+      new FilledCollection<>(new Government(), 15));
     // Using the convenience method:
-    set.addAll(CollectionData.list(new Government(), 15));
+    set.addAll(
+      FilledCollection.list(new Government(), 15));
     System.out.println(set);
   }
 }

collectionsindepth/FillingLists.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// The Collections.fill() & Collections.nCopies() methods.
+// The Collections.fill() & Collections.nCopies() methods
 import java.util.*;
 
 class StringAddress {

collectionsindepth/Groundhog.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Looks plausible, but doesn't work as a HashMap key.
+// Looks plausible, but doesn't work as a HashMap key
 
 public class Groundhog {
   protected int number;

collectionsindepth/Groundhog2.java

@@ -3,7 +3,7 @@
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
 // A class that's used as a key in a HashMap
-// must override hashCode() and equals().
+// must override hashCode() and equals()
 
 public class Groundhog2 extends Groundhog {
   public Groundhog2(int n) { super(n); }

collectionsindepth/LinkedHashMapDemo.java

@@ -2,18 +2,18 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// What you can do with a LinkedHashMap.
+// What you can do with a LinkedHashMap
 import java.util.*;
 import onjava.*;
 
 public class LinkedHashMapDemo {
   public static void main(String[] args) {
     LinkedHashMap<Integer,String> linkedMap =
-      new LinkedHashMap<>(new CountingMapData(9));
+      new LinkedHashMap<>(new CountingFilledMap(9));
     System.out.println(linkedMap);
     // Least-recently-used order:
     linkedMap = new LinkedHashMap<>(16, 0.75f, true);
-    linkedMap.putAll(new CountingMapData(9));
+    linkedMap.putAll(new CountingFilledMap(9));
     System.out.println(linkedMap);
     for(int i = 0; i < 6; i++) // Cause accesses:
       linkedMap.get(i);

collectionsindepth/ListPerformance.java

@@ -2,13 +2,13 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Demonstrates performance differences in Lists.
+// Demonstrates performance differences in Lists
 // {Args: 100 500} Small to keep build testing short
 import java.util.*;
 import onjava.*;
 
 public class ListPerformance {
-  static Random rand = new Random();
+  static SplittableRandom rand = new SplittableRandom();
   static int reps = 1000;
   static List<Test<List<Integer>>> tests =
     new ArrayList<>();
@@ -53,7 +53,8 @@ public class ListPerformance {
       int test(List<Integer> list, TestParam tp) {
         final int LOOPS = 1000000;
         int half = list.size() / 2;
-        ListIterator<Integer> it = list.listIterator(half);
+        ListIterator<Integer> it =
+          list.listIterator(half);
         for(int i = 0; i < LOOPS; i++)
           it.add(47);
         return LOOPS;
@@ -145,7 +146,8 @@ public class ListPerformance {
       super(collection, tests);
     }
     // Fill to the appropriate size before each test:
-    @Override protected List<Integer> initialize(int size){
+    @Override
+    protected List<Integer> initialize(int size) {
       collection.clear();
       collection.addAll(new CountingIntegerList(size));
       return collection;
@@ -161,13 +163,14 @@ public class ListPerformance {
       Tester.defaultParams = TestParam.array(args);
     // Can only do these two tests on an array:
     Tester<List<Integer>> arrayTest =
-      new Tester<List<Integer>>(null, tests.subList(1, 3)){
+      new Tester<List<Integer>>(null,
+          tests.subList(1, 3)) {
         // This is called before each test. It
         // produces a non-resizeable array-backed list:
         @Override protected
         List<Integer> initialize(int size) {
-          Integer[] ia = Generated.array(Integer.class,
+          Integer[] ia = new Integer[size];
-            new CountingSupplier.Integer(), size);
+          Arrays.setAll(ia, new Count.Integer()::get);
           return Arrays.asList(ia);
         }
       };

collectionsindepth/ListSortSearch.java

@@ -2,7 +2,7 @@
 // (c)2016 MindView LLC: see Copyright.txt
 // We make no guarantees that this code is fit for any purpose.
 // Visit http://mindviewinc.com/Books/OnJava/ for more book information.
-// Sorting and searching Lists with Collections utilities.
+// Sorting and searching Lists with Collections utilities
 import java.util.*;
 
 public class ListSortSearch {
@@ -28,7 +28,8 @@ public class ListSortSearch {
       "Location of " + key + " is " + index +
       ", list.get(" + index + ") = " + list.get(index));
     Collections.sort(list, String.CASE_INSENSITIVE_ORDER);
-    System.out.println("Case-insensitive sorted: " + list);
+    System.out.println(
+      "Case-insensitive sorted: " + list);
     key = list.get(7);
     index = Collections.binarySearch(list, key,
       String.CASE_INSENSITIVE_ORDER);