Java LinkedTransferQueue put() Method

The put() method of LinkedTransferQueue adds the defined element at the tail of this queue. It waits till the space becomes available if queue is full.

Syntax:

Parameters:

e - This is the element to be added.

Specified By:

The put() method of LinkedTransferQueue class is specified by put() method in interface BlockingQueue.

Return:

Throws:

NullPointerException - This exception will throw if the specified element is null.

Example 1

import java.util.concurrent.LinkedTransferQueue;  
public class LinkedTransferQueuePutExample1 {  
    public static void main(String[] args) throws InterruptedException {  
        int capacity = 5;  
        LinkedTransferQueue<Integer> queue = new LinkedTransferQueue<Integer>();  
        queue.add(67);  
        queue.add(109);  
        queue.add(76);  
        queue.add(876);  
        //inserts the element at the tail of the queue  
        queue.put(2);  
        System.out.println("Elements in queue : "+queue);  
    }  
}

Test it Now

Output:

Elements in queue : [67, 109, 76, 876, 2]

Example 2

import java.util.concurrent.LinkedTransferQueue;   
public class LinkedTransferQueuePutExample2 {  
    public static void main(String[] args) {  
        int capacity=100;  
        LinkedTransferQueue<String> queue = new LinkedTransferQueue<String>();  
        queue.put("John");  
        queue.put("Harry");  
        queue.put("Kristen");  
        queue.put("Peter");  
        for (String xyz : queue){  
            System.out.println(xyz);  
        }  
    }  
}

Test it Now

Output:

John
Harry
Kristen
Peter

Example 3

import java.util.concurrent.LinkedTransferQueue;  
 
public class LinkedTransferQueuePutExample3 {  
    public static void main(String[] args) throws InterruptedException {  
        int capacity=4;  
        LinkedTransferQueue<String> queue = new LinkedTransferQueue<String>();  
        queue.add("Reema");  
        queue.add("Rahul");  
        queue.add("Amar");  
        queue.add("Rajesh");  
        queue.put(null);  
        for (String xyz : queue){  
            System.out.println(xyz);  
        }  
    }  
}

Test it Now

Output:

Exception in thread "main" java.lang.NullPointerException
	at java.base/java.util.concurrent.LinkedTransferQueue.xfer(Unknown Source)
	at java.base/java.util.concurrent.LinkedTransferQueue.put(Unknown Source)
	at tests.LinkedTransferQueuePutExample3.main(LinkedTransferQueuePutExample3.java:11)

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