How to remove all element from Hashset.
How to remove all element from Hashset.Code:
HashSetRemoveElement.java
package net.roseindia;import java.util.HashSet; public class RemoveAllElement { public static void main(String[] arg) {HashSet obHashSet = new HashSet();obHashSet.add( new Integer(1));obHashSet.add( new Integer(2));obHashSet.add( new Integer(3));obHashSet.add( new Integer(4));System. out.println("Element before clear method : " + obHashSet);obHashSet.clear(); System. out.println("Check HashSet : " + obHashSet.isEmpty());System. out.println("Element after clear method : " + obHashSet);} } |
Element before clear method : [1, 2, 3, 4] Check HashSet : true Element after clear method : [] |