Java : Collection Framework : Deque (removeFirstOccurrence & removeLastOccurrence methods)

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DequeExample.java

import java.util.Deque;
import java.util.LinkedList;

/*
 *  Example of removeFirstOccurrence(Object o) and removeLastOccurrence(Object o) methods.
 */
public class DequeExample
{

    public static void main(String[] args)
    {
        Deque<Integer> deque = new LinkedList<Integer>();
        deque.add(200);
        deque.add(300);
        deque.add(200);
        deque.add(5000);
        deque.add(200);
        deque.add(800);

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

        /*
         * Removes the first occurrence of the specified element from this
         * deque. If the deque does not contain the element, it is unchanged.
         */
        boolean isRemoved = deque.removeFirstOccurrence(200);
        System.out.println("isRemoved : " + isRemoved);
        System.out.println("deque : " + deque + "\n");

        /*
         * Removes the last occurrence of the specified element from this deque.
         * If the deque does not contain the element, it is unchanged.
         */
        isRemoved = deque.removeLastOccurrence(200);
        System.out.println("isRemoved : " + isRemoved);
        System.out.println("deque : " + deque + "\n");

    }

}

Output

deque : [200, 300, 200, 5000, 200, 800]

isRemoved : true
deque : [300, 200, 5000, 200, 800]

isRemoved : true
deque : [300, 200, 5000, 800]

To Download DequeDemoRemoveOcc Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/DequeDemoRemoveOcc.zip?attredirects=0&d=1

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