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LinkedTransferQueue put() method in Java

Last Updated : 14 Sep, 2018
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The java.util.concurrent.LinkedTransferQueue.put() method is an in-built function in Java which is used to insert an element in this queue. It waits till the space becomes available if queue is full. Syntax: 
LinkedTransferQueue.put(E e)
Parameters: The function accepts a single parameter e i.e. the element to be inserted. Return Value: The function does not return anything. Exception: The function shows NullPointerException when the specified element is Null. Below programs illustrate the LinkedTransferQueue.put() method: Program 1: Inserting Integers in the queue. Java 
/* Java Program Demonstrate put()
method of LinkedTransferQueue */

import java.util.concurrent.*;

class LinkedTransferQueuePutExample1 {
    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.put(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 put()
method of LinkedTransferQueue */

import java.util.concurrent.*;

class LinkedTransferQueuePutExample2 {
    public static void main(String[] args)
    {
        // Initializing the queue
        LinkedTransferQueue<String> queue = 
                     new LinkedTransferQueue<String>();

        // Adding elements to this queue
        queue.put("alex");
        queue.put("bob");
        queue.put("chuck");
        queue.put("drake");
        queue.put("erick");

        // 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:
alex bob chuck drake erick
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedTransferQueue.html#put(E)

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