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Wednesday, 27 May 2015

How to remove all element from HashSet


import java.util.HashSet;
import java.util.Set;

public class RemoveAll {
   
public static void main(String[] args) {
       
        Set<String> hs = new HashSet<String>();
        hs.add("java");
        hs.add("php");
        hs.add("html");
        hs.add("javascript");
        hs.add("mysql");
       
        //print hashset
        System.out.println("Before Remove element hashset is = "+hs);
       
         /*
          * Removes all of the elements from  set
          */
        hs.clear();
       
        System.out.println("After Remove elements hashset is ="+hs);
       
    }

}






Output:


Before Remove element hashset is = [javascript, php, html, java, mysql]

After Remove elements hashset is =[]

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