Java.util.BitSet.equals() Method

Description

The java.util.BitSet.equals(Object obj) method compares this object against the specified object. The result is true if and only if the argument is not null and is a Bitset object that has exactly the same set of bits set to true as this bit set. That is, for every nonnegative int index k,

Declaration

Following is the declaration for java.util.BitSet.equals() method

public boolean equals(Object obj)

Parameters

• obj -- the object to compare with.

Return Value

This method returns true if the objects are the same; false otherwise.

Exception

• NA

Example

The following example shows the usage of java.util.BitSet.equals() method.

package com.tutorialspoint;

import java.util.*;

public class BitSetDemo {

   public static void main(String[] args) {

      // create 2 bitsets
      BitSet bitset1 = new BitSet(8);
      BitSet bitset2 = new BitSet(8);

      // assign values to bitset1
      bitset1.set(0);
      bitset1.set(1);
      bitset1.set(2);
      bitset1.set(3);
      bitset1.set(4);
      bitset1.set(5);

      // assign values to bitset2
      bitset2.set(2);
      bitset2.set(4);
      bitset2.set(6);
      bitset2.set(8);
      bitset2.set(10);

      // print the sets
      System.out.println("Bitset1:" + bitset1);
      System.out.println("Bitset2:" + bitset2);

      // check equality for bitset1 and bitset 2
      System.out.println("" + bitset1.equals(bitset2));

      // make them equal
      bitset2 = bitset1;

      // check equality for bitset1 and bitset 2 again
      System.out.println("" + bitset1.equals(bitset2));

   }
}

Let us compile and run the above program, this will produce the following result:

Bitset1:{0, 1, 2, 3, 4, 5}
Bitset2:{2, 4, 6, 8, 10}
false
true