Java Tutorial: Generics in java | Java Generics [Generics example using HashSet] ~ foundjava

Click here to watch in Youtube :
https://www.youtube.com/watch?v=dz2AZGHbL68&list=UUhwKlOVR041tngjerWxVccw


GenericDemo.java

import java.util.HashSet;
import java.util.Iterator;

public class GenericDemo
{
    public static void main(String[] args)
    {
        HashSet<String> nameSet = new HashSet<String>();
        nameSet.add("Peter");
        nameSet.add("John");
        nameSet.add("Juli");

        System.out.println("----------Using for-each loop---------------");
        /*
         * Using for-each loop we can loop and get each name from nameSet
         */
        for (String name : nameSet)
        {
            System.out.println(name);
        }

        System.out.println("----------Using Iterator---------------------");
        Iterator<String> iterator = nameSet.iterator();

        while (iterator.hasNext())
        {
            String name = iterator.next();
            System.out.println(name);
        }

    }

}

Output

----------Using for-each loop---------------
John
Peter
Juli
----------Using Iterator---------------------
John
Peter
Juli

Click the below link to download the code:

CLICK HERE