BitSet size() in Java

size(): This method is available in java.util.BitSet class of Java.

Syntax:

int java.util.BitSet.size()

This method returns the number of bits of space actually in use by this BitSet to represent bit values.

Note: The maximum element in the set is the size - 1st element.

Parameters: NA

Returns: the number of bits currently in this bit set.

Exceptions: NA

Approach

Java

import java.util.BitSet;

public class BitSetsize {
    public static void main(String[] args) {
        BitSet bitSet = new BitSet(100);

        bitSet.set(1);

        bitSet.set(50);
        bitSet.set(6);
        bitSet.set(10);

        System.out.println(bitSet.size());
    }
}

Output:

128