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HashSet remove() Method in Java

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
Freshers Placement

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<Integer> 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]

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