Remove specified element from HashSet - Java Collection Framework

Java examples for Collection Framework:HashSet

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Description

Remove specified element from HashSet

Demo Code

import java.util.HashSet;
 
public class Main {
 
  public static void main(String[] args) {
    HashSet hSet = new HashSet();
   /*w  ww .  j  av a2s  .co m*/
    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));
   
    System.out.println("HashSet before removal : " + hSet);
   
    boolean blnRemoved = hSet.remove(new Integer("2"));
    System.out.println("Was 2 removed from HashSet ? " + blnRemoved);
   
    System.out.println("HashSet after removal : " + hSet);
  }
}

Result


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