Java Utility Library

Java BitSet - isEmpty() Method

The java.util.BitSet.isEmpty() method is used to check whether the BitSet is empty or not. It returns true if the BitSet contains no bits, else returns false.

Syntax

public boolean isEmpty()

Parameters

No parameter is required.

Return Value

Returns true if the BitSet is empty, else returns false.

Exception

Example:

In the example below, the java.util.BitSet.isEmpty() method is used to check whether the given BitSet is empty or not.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a BitSet
    BitSet BSet = new BitSet();

    //checking BitSet for empty
    System.out.println("Is BSet empty?: " + BSet.isEmpty());

    //populating BitSet
    BSet.set(10);
    BSet.set(20);
    BSet.set(30);
    BSet.set(40);
    BSet.set(50);
    
    //checking BitSet for empty
    System.out.println("Is BSet empty?: " + BSet.isEmpty());
  }
}

The output of the above code will be:

Is BSet empty?: true
Is BSet empty?: false

❮ Java.util - BitSet