Java.util.BitSet.isEmpty() Method


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Description

The java.util.BitSet.isEmpty() method returns true if this BitSet contains no bits that are set to true.

Declaration

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

public boolean isEmpty()

Parameters

  • NA

Return Value

This method returns boolean indicating whether this BitSet is empty.

Exception

  • NA

Example

The following example shows the usage of java.util.BitSet.isEmpty() 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 if bitset1 and 2 are empty
   System.out.println("" + bitset1.isEmpty());
   System.out.println("" + bitset2.isEmpty());

   // create a new empty bitset
   BitSet bitset3 = new BitSet(8);

   // check if bitset3 is empty
   System.out.println("" + bitset3.isEmpty());

   }
}

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
false
true

java_util_bitset.htm

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