Java BitSet andNot() method

The andNot() method of Java BitSet class is used to clear the entire bit in this BitSet whose corresponding bit is set in the specified BitSet.

Syntax:

Parameter:

DataType	Parameter	Description
BitSet	set	It is a bit set.

Returns:

Exception:

NullPointerException - If null parameter will pass in the method.

Compatibility Version:

Java 1.2 and above

Example 1

import java.util.BitSet;
public class BitSetAndNotExample1 {
	public static void main(String[] args) {
	      BitSet bitset1 = new BitSet();
	  
	      bitset1.set(0);
	      bitset1.set(1);
	      bitset1.set(2);
	      bitset1.set(3);
	      bitset1.set(4);

	      BitSet bitset2 = new BitSet();
	      
	      bitset2.set(1);
	      bitset2.set(3);
	      bitset2.set(5);
	      bitset2.set(6);
	      bitset2.set(7);

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

	      // perform andNot operation between two bitset
	      bitset1.andNot(bitset2);
	      // print the new bitset1
	      System.out.println("result bitset after andNot: " + bitset1);
	}
}

Output:

bitset1: {0, 1, 2, 3, 4}
bitset2: {1, 3, 5, 6, 7}
result bitset after andNot: {0, 2, 4}

Example 2

This method throws a NullPointerException if we pass a null parameter.

import java.util.BitSet;

public class BitSetAndNotExample2 {
	public static void main(String[] args) {
	      BitSet bitset1 = new BitSet();
	  
	      bitset1.set(0);
	      bitset1.set(1);
	      bitset1.set(2);
	      bitset1.set(3);
	      bitset1.set(4);
	      // print the sets
	      System.out.println("bitset1: " + bitset1);

	      // perform andNot operation between bitset and null throw exception
	      bitset1.andNot(null);
	      // print the new bitset1
	      System.out.println("result bitset after andNot: " + bitset1);
	}
}

Output:

Exception in thread "main" java.lang.NullPointerException
	at java.util.BitSet.andNot(Unknown Source)
	at BitSetAndNotExample2.main(BitSetAndNotExample2.java:16)
bitset1: {0, 1, 2, 3, 4}

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