OnJava8-Examples/operators/BitManipulation.java

// operators/BitManipulation.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Using the bitwise operators
import java.util.*;

public class BitManipulation {
  public static void main(String[] args) {
    Random rand = new Random(47);
    int i = rand.nextInt();
    int j = rand.nextInt();
    printBinaryInt("-1", -1);
    printBinaryInt("+1", +1);
    int maxpos = 2147483647;
    printBinaryInt("maxpos", maxpos);
    int maxneg = -2147483648;
    printBinaryInt("maxneg", maxneg);
    printBinaryInt("i", i);
    printBinaryInt("~i", ~i);
    printBinaryInt("-i", -i);
    printBinaryInt("j", j);
    printBinaryInt("i & j", i & j);
    printBinaryInt("i | j", i | j);
    printBinaryInt("i ^ j", i ^ j);
    printBinaryInt("i << 5", i << 5);
    printBinaryInt("i >> 5", i >> 5);
    printBinaryInt("(~i) >> 5", (~i) >> 5);
    printBinaryInt("i >>> 5", i >>> 5);
    printBinaryInt("(~i) >>> 5", (~i) >>> 5);

    long l = rand.nextLong();
    long m = rand.nextLong();
    printBinaryLong("-1L", -1L);
    printBinaryLong("+1L", +1L);
    long ll = 9223372036854775807L;
    printBinaryLong("maxpos", ll);
    long lln = -9223372036854775808L;
    printBinaryLong("maxneg", lln);
    printBinaryLong("l", l);
    printBinaryLong("~l", ~l);
    printBinaryLong("-l", -l);
    printBinaryLong("m", m);
    printBinaryLong("l & m", l & m);
    printBinaryLong("l | m", l | m);
    printBinaryLong("l ^ m", l ^ m);
    printBinaryLong("l << 5", l << 5);
    printBinaryLong("l >> 5", l >> 5);
    printBinaryLong("(~l) >> 5", (~l) >> 5);
    printBinaryLong("l >>> 5", l >>> 5);
    printBinaryLong("(~l) >>> 5", (~l) >>> 5);
  }
  static void printBinaryInt(String s, int i) {
    System.out.println(
      s + ", int: " + i + ", binary:\n   " +
      Integer.toBinaryString(i));
  }
  static void printBinaryLong(String s, long l) {
    System.out.println(
      s + ", long: " + l + ", binary:\n    " +
      Long.toBinaryString(l));
  }
}
/* Output: (First 32 Lines)
-1, int: -1, binary:
   11111111111111111111111111111111
+1, int: 1, binary:
   1
maxpos, int: 2147483647, binary:
   1111111111111111111111111111111
maxneg, int: -2147483648, binary:
   10000000000000000000000000000000
i, int: -1172028779, binary:
   10111010001001000100001010010101
~i, int: 1172028778, binary:
   1000101110110111011110101101010
-i, int: 1172028779, binary:
   1000101110110111011110101101011
j, int: 1717241110, binary:
   1100110010110110000010100010110
i & j, int: 570425364, binary:
   100010000000000000000000010100
i | j, int: -25213033, binary:
   11111110011111110100011110010111
i ^ j, int: -595638397, binary:
   11011100011111110100011110000011
i << 5, int: 1149784736, binary:
   1000100100010000101001010100000
i >> 5, int: -36625900, binary:
   11111101110100010010001000010100
(~i) >> 5, int: 36625899, binary:
   10001011101101110111101011
i >>> 5, int: 97591828, binary:
   101110100010010001000010100
(~i) >>> 5, int: 36625899, binary:
   10001011101101110111101011
                  ...
*/