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  1. class BitwiseOpsDemo {
  2. 	public static void main(String[] args) {
  3. 	    java.io.PrintStream out = System.out;
  4.  
  5.         int packed = 0;
  6.  
  7.         // Enable bits located at 0x20 and 0x2, respectively
  8.         packed |= 1 << 5;
  9.         packed |= 1 << 2;
  10.         out.println("packed = " + Integer.toBinaryString(packed));
  11.  
  12.         // To determine what is set at a particular bit, mask the value and compare it with the mask
  13.         boolean isShift5 = (packed & 0x20) == 0x20;
  14.         boolean isShift6 = (packed & 0x40) == 0x40;
  15.  
  16.         // You don’t need to hardcode the mask, you can also compute the mask
  17.         int shift2Mask = 1 << 2;
  18.         out.println("shift2Mask = " + Integer.toBinaryString(shift2Mask));
  19.  
  20.  
  21.         boolean isShift2 = (packed & shift2Mask) == shift2Mask;
  22.  
  23.         out.println("fifth = " + isShift5 + " | sixth = " + isShift6 + " | second = " + isShift2);
  24. 	}
  25. }
Success #stdin #stdout 0.14s 36840KB
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Standard input is empty
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packed = 100100
shift2Mask = 100
fifth = true | sixth = false | second = true
https://ideone.com/ijA9dj
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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