RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/java/linkedtransferqueue-add-method-in-java/ below:

LinkedTransferQueue add() method in Java

Last Updated : 14 Sep, 2018

The

add()

method of

java.util.concurrent.LinkedTransferQueue

is an in-built function in Java which is used to insert an element in this queue.

Syntax:

LinkedTransferQueue.add(E e)

Parameters:

The function accepts a single parameter

i.e. the element to be inserted.

Return Value:

The function returns a boolean value.

Exception:

The function throws

NullPointerException

when the specified element is Null. Below programs illustrate the use of java.util.concurrent.LinkedTransferQueue.add() :

Program 1:

Inserting Integers in the queue.

Java


 // Java Program Demonstrate add()
// method of LinkedTransferQueue

import java.util.concurrent.*;

class LinkedTransferQueueAddExample1 {
    public static void main(String[] args)
    {

        // Initializing the queue
        LinkedTransferQueue<Integer>
            queue = new LinkedTransferQueue<Integer>();

        // Adding elements to this queue
        for (int i = 10; i <= 15; i++)
            queue.add(i);

        // Printing the elements of the queue
        System.out.println("The elements in the queue are:");
        for (Integer i : queue)
            System.out.print(i + " ");
    }
}

Output:

The elements in the queue are:
10 11 12 13 14 15

Program 2:

Adding String in the queue.

Java


 // Java Program Demonstrate add()
// method of LinkedTransferQueue

import java.util.concurrent.*;

class LinkedTransferQueueAddExample2 {
    public static void main(String[] args)
    {

        // Initializing the queue
        LinkedTransferQueue<String>
            queue = new LinkedTransferQueue<String>();

        // Adding elements to this queue
        queue.add("a");
        queue.add("b");
        queue.add("c");
        queue.add("d");
        queue.add("e");

        // Printing the elements of the queue
        System.out.println("The elements in the queue are:");
        for (String i : queue)
            System.out.print(i + " ");
    }
}

Output:

The elements in the queue are:
a b c d e

Program 3:

To demonstrate NullPointerException

Java


 // Java Program Demonstrate add()
// method of LinkedTransferQueue

import java.util.concurrent.*;

class LinkedTransferQueueAddExample2 {
    public static void main(String[] args)
    {

        // Initializing the queue
        LinkedTransferQueue<String>
            queue = new LinkedTransferQueue<String>();

        try {
            // Adding null to this queue
            queue.add(null);
        }
        catch (Exception e) {
            System.out.println("Exception: " + e);
        }
    }
}

Output:

Exception: java.lang.NullPointerException

Reference

https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedTransferQueue.html#add(E)

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4