Java BitSet or() Method

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Description

The Java BitSet or(BitSet set) method performs a logical OR of this bit set with the bit set argument. This bit set is modified so that a bit in it has the value true if and only if it either already had the value true or the corresponding bit in the bit set argument has the value true.

Declaration

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

public void or(BitSet set)

Parameters

set − a bit set.

Return Value

This method does not return a value.

Exception

NA

Example 1

The following example shows the usage of Java BitSet or() method. We're creating two BitSets. We're setting true values at given indexes to the BitSet objects using set() method calls per index and using or() method we're performing or opearation and print the updated bitset.

package com.tutorialspoint;
import java.util.BitSet;
public class BitSetDemo {
   public static void main(String[] args) {

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

      // assign values to bitset1
      bitset1.set(0, 6, true);

      // 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);

      // perform or operation between two bitsets
      bitset1.or(bitset2);

      // print the new bitset1
      System.out.println(bitset1);
   }
}

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}
{0, 1, 2, 3, 4, 5, 6, 8, 10}

Example 2

The following example shows the usage of Java BitSet or() method. We're creating two BitSets using byte[] and using or() method we're performing or opearation and print the updated bitset.

package com.tutorialspoint;
import java.util.BitSet;
public class BitSetDemo {
   public static void main(String[] args) {

      // create 2 bitsets
      BitSet bitset1 = BitSet.valueOf(new byte[] { 0, 1, 2, 3, 4, 5 });
      BitSet bitset2 = BitSet.valueOf(new byte[] { 2, 4, 6, 8, 10 });

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

      // perform or operation between two bitsets
      bitset1.or(bitset2);

      // print the new bitset1
      System.out.println(bitset1);
   }
}

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

Bitset1:{8, 17, 24, 25, 34, 40, 42}
Bitset2:{1, 10, 17, 18, 27, 33, 35}
{1, 8, 10, 17, 18, 24, 25, 27, 33, 34, 35, 40, 42}

Example 3

The following example shows the usage of Java BitSet or() method. We're creating two BitSets using long[] and using or() method we're performing or opearation and print the updated bitset.

package com.tutorialspoint;
import java.util.BitSet;
public class BitSetDemo {
   public static void main(String[] args) {

      // create 2 bitsets
      BitSet bitset1 = BitSet.valueOf(new long[] { 0, 1, 2, 3, 4, 5 });
      BitSet bitset2 = BitSet.valueOf(new long[] { 2, 4, 6, 8, 10 });

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

      // perform or operation between two bitsets
      bitset1.or(bitset2);

      // print the new bitset1
      System.out.println(bitset1);
   }
}

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

Bitset1:{64, 129, 192, 193, 258, 320, 322}
Bitset2:{1, 66, 129, 130, 195, 257, 259}
{1, 64, 66, 129, 130, 192, 193, 195, 257, 258, 259, 320, 322}