The remove(Element e) method of HashSet removes the specified element from the set.

Syntax

boolean remove(Element e)

Parameters

e is the element to be removed

Return Value

It returns true on successful removal of the element otherwise false if the element is not found in the HashSet.

Program

import java.util.HashSet;

public class HashSetRemoveExample {

        public static void main(String[] args) {

                HashSet set = new HashSet();
                set.add(10);
                set.add(20);
                set.add(30);
                set.add(40);
                set.add(50);

                System.out.println("Set elements : " + set);

                set.remove(20);
                System.out.println("Set elements after removing 20: " + set);
                set.remove(00);// returns false if element not found in set
        }
}

Output

Set elements : [50, 20, 40, 10, 30]
Set elements after removing 20: [50, 40, 10, 30]