Fixed path issue using nio Path

patterns/doubledispatch/DoubleDispatch.java

@@ -56,7 +56,7 @@ public class DoubleDispatch {
     ArrayList<Trash> bin = new ArrayList<>();
     TrashBinSet bins = new TrashBinSet();
     // ParseTrash still works, without changes:
-    ParseTrash.fillBin("DDTrash.dat", bin);
+    ParseTrash.fillBin("doubledispatch", "DDTrash.dat", bin);
     // Sort from the master bin into the
     // individually-typed bins:
     bins.sortIntoBins(bin);

patterns/dynatrash/DynaTrash.java

@@ -44,7 +44,7 @@ public class DynaTrash {
   @SuppressWarnings("unchecked")
   public static void main(String[] args) {
     TypeMap<Trash> bin = new TypeMap<>();
-    ParseTrash.fillBin("Trash.dat",
+    ParseTrash.fillBin("recycleap", "Trash.dat",
       new TypeMapAdapter(bin));
     Iterator<Class> keys = bin.keys();
     while(keys.hasNext())

patterns/recycleap/RecycleAP.java

@@ -9,7 +9,7 @@ public class RecycleAP {
   public static void main(String[] args) {
     ArrayList<Trash> bin = new ArrayList<>();
     // Fill up the Trash bin:
-    ParseTrash.fillBin("Trash.dat", bin);
+    ParseTrash.fillBin("recycleap", "Trash.dat", bin);
     List<Glass> glassBin = new ArrayList<>();
     List<Paper> paperBin = new ArrayList<>();
     List<Aluminum> alBin = new ArrayList<>();

patterns/recycleb/RecycleB.java

@@ -41,7 +41,7 @@ public class RecycleB {
   static Tbin<Trash> bin = new Tbin<>(Trash.class);
   public static void main(String[] args) {
     // Fill up the Trash bin:
-    ParseTrash.fillBin("Trash.dat", bin);
+    ParseTrash.fillBin("recycleap", "Trash.dat", bin);
 
     TbinList<Trash> trashBins = new TbinList<>();
     trashBins.add(new Tbin<>(Aluminum.class));

patterns/trash/ParseTrash.java

@@ -5,22 +5,25 @@
 package patterns.trash;
 import java.util.*;
 import java.io.*;
+import java.nio.file.*;
 
 public class ParseTrash {
   public static <T extends Trash> void
-  fillBin(String filename, Fillable<T> bin) {
+  fillBin(String dir, String fname, Fillable<T> bin) {
     try {
-      try(BufferedReader data = new BufferedReader(
-             new FileReader(filename))) {
+      Path p = FileSystems.getDefault()
+               .getPath("..", dir, fname);
+      try(BufferedReader data = Files.newBufferedReader(p)){
         String buf;
         while((buf = data.readLine())!= null) {
           if(buf.trim().length() == 0)
             continue; // Skip empty lines
+          if(buf.startsWith("//"))
+            continue; // Skip comments
           String type = buf.substring(0,
-                  buf.indexOf(':')).trim();
+            buf.indexOf(':')).trim();
           double weight = Double.valueOf(
-                  buf.substring(buf.indexOf(':') + 1)
-                          .trim());
+            buf.substring(buf.indexOf(':') + 1).trim());
           bin.addTrash(Trash.factory(
             new Trash.Info(type, weight)));
         }
@@ -34,7 +37,7 @@ public class ParseTrash {
   }
   // Special case to handle ArrayList:
   public static <T extends Trash> void
-  fillBin(String filename, ArrayList<T> bin) {
-    fillBin(filename, new FillableList<>(bin));
+  fillBin(String dir, String fname, ArrayList<T> bin) {
+    fillBin(dir, fname, new FillableList<>(bin));
   }
 }

patterns/trashvisitor/TrashVisitor.java

@@ -83,7 +83,7 @@ public class TrashVisitor {
   public static void main(String[] args) {
     ArrayList<Trash> bin = new ArrayList<>();
     // ParseTrash still works, without changes:
-    ParseTrash.fillBin("VTrash.dat", bin);
+    ParseTrash.fillBin("trashvisitor", "VTrash.dat", bin);
     // You could even iterate through
     // a list of visitors!
     PriceVisitor pv = new PriceVisitor();