Remove all elements from HashSet - Java Collection Framework

Java examples for Collection Framework:HashSet

  1. HOME
  2. Java
  3. Collection Framework
  4. HashSet

Description

Remove all elements from HashSet

Demo Code


import java.util.HashSet;
 
public class Main {
 
  public static void main(String[] args) {
    HashSet hSet = new HashSet();
   //from   w  ww .j a  va  2  s. c  o  m
    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));
   
    System.out.println("HashSet before removal : " + hSet);
    hSet.clear();
    System.out.println("HashSet after removal : " + hSet);
    System.out.println("Is HashSet empty ? " + hSet.isEmpty());    
  }
}

Result


Related Tutorials