Click here to watch in Youtube :
https://www.youtube.com/watch?v=4ZdNyFm8ag8&list=UUhwKlOVR041tngjerWxVccw
HashSetExample.java
Output
https://www.youtube.com/watch?v=4ZdNyFm8ag8&list=UUhwKlOVR041tngjerWxVccw
HashSetExample.java
import java.util.HashSet; /* * Example of contains(Object o) method. */ public class HashSetExample { public static void main( String[] args ) { HashSet<String> hashSet = new HashSet<String>(); hashSet.add("Dave"); hashSet.add("Peter"); hashSet.add("Phil"); hashSet.add("Rohit"); hashSet.add("Virat"); System.out.println("hashSet: " + hashSet + "\n"); /* * Returns true if this set contains the specified element. */ boolean isExist = hashSet.contains("Peter"); System.out.println("is 'Peter' Exist : " + isExist); isExist = hashSet.contains("Juli"); System.out.println("is 'Juli' Exist : " + isExist); } }
hashSet: [Rohit, Dave, Phil, Peter, Virat] is 'Peter' Exist : true is 'Juli' Exist : false
https://sites.google.com/site/javaee4321/java-collections/HashSetDemoContains.zip?attredirects=0&d=1
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