Java : Collection Framework : LinkedList (Clear|Empty|Size)

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LinkedListClearEmptySizeExample.java

import java.util.LinkedList;

/*
 * Example of isEmpty(),clear() and size() methods
 */
public class LinkedListClearEmptySizeExample
{

    public static void main( String[] args )
    {
        LinkedList<Integer> linkedList = new LinkedList<Integer>();
        linkedList.add(200);
        linkedList.add(300);
        linkedList.add(10000);
        linkedList.add(5000);
        linkedList.add(2000);

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

        int size;
        boolean isEmpty;
        size = linkedList.size();

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

        isEmpty = linkedList.isEmpty();

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

        linkedList.clear();

        System.out.println("\nAfter linkedList is cleared :" + linkedList
                + "\n");

        size = linkedList.size();

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

        isEmpty = linkedList.isEmpty();

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

    }

}

Output

linkedList : [200, 300, 10000, 5000, 2000]

size : 5
isEmpty : false

After linkedList is cleared :[]

size : 0
isEmpty : true

To Download LinkedListDemoClearSizeIsEmpty Project Click the below link

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

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