The equals() method of Java BitSet class is used to check for equality between two bitsets. It verifies whether the elements of one set passed as a parameter is equal to the elements of this set or not. The method returns true if the bitsets match else false.
Syntax:
Bit_Set1.equals(Bit_Set2)
Parameters: The method accepts one parameter Bit_Set2 of bitset type and refers to the set whose equality is to be checked with this bit set.
Return Value: The method returns true if the equality holds for both the object set else it returns false.
Below programs illustrate the working of BitSet equals() method in Java.
Program 1:
// Java code to illustrate equals()import java.util.*; public class BitSet_Demo { public static void main(String args[]) { // Creating an empty BitSet BitSet bit_set1 = new BitSet(); BitSet bit_set2 = new BitSet(); // Use set() method to add elements into the Set bit_set1.set(40); bit_set1.set(25); bit_set1.set(80); bit_set1.set(95); bit_set1.set(5); // Use set() method to add elements into the Set bit_set2.set(25); bit_set2.set(40); bit_set2.set(5); bit_set2.set(95); bit_set2.set(80); // Displaying the BitSets System.out.println("First BitSet: " + bit_set1); System.out.println("Second BitSet: " + bit_set2); // Checking for equality System.out.println("Are the sets equal? " + bit_set1.equals(bit_set2)); }} |
Output:
First BitSet: {5, 25, 40, 80, 95}
Second BitSet: {5, 25, 40, 80, 95}
Are the sets equal? true
Program 2:
// Java code to illustrate equals()import java.util.*; public class BitSet_Demo { public static void main(String args[]) { // Creating an empty BitSet BitSet bit_set1 = new BitSet(); BitSet bit_set2 = new BitSet(); // Use set() method to add elements into the Set bit_set1.set(40); bit_set1.set(25); bit_set1.set(80); bit_set1.set(95); bit_set1.set(5); // Use set() method to add elements into the Set bit_set2.set(10); bit_set2.set(20); bit_set2.set(30); bit_set2.set(40); bit_set2.set(50); // Displaying the BitSets System.out.println("First BitSet: " + bit_set1); System.out.println("Second BitSet: " + bit_set2); // Checking for equality System.out.println("Are the sets equal? " + bit_set1.equals(bit_set2)); }} |
Output:
First BitSet: {5, 25, 40, 80, 95}
Second BitSet: {10, 20, 30, 40, 50}
Are the sets equal? false
