Friday, 17 October 2014

Java : Collection Framework : LinkedList (Add Group of Objects)



Click here to watch in Youtube : https://www.youtube.com/watch?v=l-Y57lQT6lM

LinkedListAddAllListExample.java
import java.util.LinkedList;

/*
 * Example of addAll(Collection<? extends E> c) method
 */
public class LinkedListAddAllListExample
{

    public static void main( String[] args )
    {
        LinkedList<Integer> linkedList1 = new LinkedList<Integer>();
        linkedList1.add(1);
        linkedList1.add(2);
        linkedList1.add(3);

        System.out.println("linkedList1 : " + linkedList1);

        LinkedList<Integer> linkedList2 = new LinkedList<Integer>();
        linkedList2.add(4);
        linkedList2.add(5);

        System.out.println("linkedList2 : " + linkedList2);

        /*
         * Adding linkedList2 collection elements to the linkedList1 collection
         */

        linkedList1.addAll(linkedList2);

        System.out.println("linkedList1 : " + linkedList1);
    }

}

Output
linkedList1 : [1, 2, 3]
linkedList2 : [4, 5]
linkedList1 : [1, 2, 3, 4, 5]

LinkedListAddAllSetExample.java
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;

/*
 * Example of addAll(Collection<? extends E> c) method
 */
public class LinkedListAddAllSetExample
{

    public static void main( String[] args )
    {
        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        linkedList.add(1);
        linkedList.add(2);
        linkedList.add(3);

        System.out.println("linkedList : " + linkedList);

        Set<Integer> set = new HashSet<Integer>();
        set.add(4);
        set.add(5);

        System.out.println("Set : " + set);

        /*
         * Adding Set collection elements to the list collection
         */

        linkedList.addAll(set);

        System.out.println("linkedList : " + linkedList);

    }

}

Output
linkedList : [1, 2, 3]
Set : [4, 5]
linkedList : [1, 2, 3, 4, 5]

To Download LinkedListDemoAddAll Project Click the below link

https://sites.google.com/site/javaee4321/java-collections/LinkedListDemoAddAll.zip?attredirects=0&d=1

See also:

  • All JavaEE Viedos Playlist
  • All JavaEE Viedos
  • Servlets Tutorial
  • All Design Patterns Links
  • JDBC Tutorial
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