In the following code snippet you will learn how to use the `LinkedBlockingQueue` class. This class implements the `BlockingQueue` interface. We can create a bounded queue by specifying the queue capacity at the object construction. If we do not define the capacity, the upper bound is limited to the size of `Integer.MAX_VALUE`.

The data in the queue represented as a linked node in a FIFO (First-In-First-Out) order. The head element of the queue is the longest element placed in the queue and the tail element is the latest element added to the queue.

Let’s see the code in action below:

“`java
package org.kodejava.util.concurrent;

import java.util.UUID;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;

public class LinkedBlockingQueueExample {
public static void main(String[] args) {
final BlockingQueue<String> queue = new LinkedBlockingQueue<>(1024);

// Producer Tread
new Thread(() -> {
while (true) {
try {
String data = UUID.randomUUID().toString();
System.out.printf("[%s] PUT [%s].%n",
Thread.currentThread().getName(), data);
queue.put(data);
Thread.sleep(250);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}, "Producer").start();

// Consumer-1 Thread
new Thread(() -> {
while (true) {
try {
String data = queue.take();
System.out.printf("[%s] GET [%s].%n",
Thread.currentThread().getName(), data);
Thread.sleep(550);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}, "Consumer-1").start();

// Consumer-2 Thread
new Thread(() -> {
while (true) {
try {
String data = queue.take();
System.out.printf("[%s] GET [%s].%n",
Thread.currentThread().getName(), data);
Thread.sleep(750);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}, "Consumer-2").start();
}
}
“`

The output of the code snippet above:

“`text
[Producer] PUT [34418601-19cf-41fc-aecc-a0fa7caa72bb].
[Consumer-1] GET [34418601-19cf-41fc-aecc-a0fa7caa72bb].
[Producer] PUT [f2050eaa-c575-4faf-89e8-1ad0e3fbce0e].
[Consumer-2] GET [f2050eaa-c575-4faf-89e8-1ad0e3fbce0e].
[Producer] PUT [2f24985b-009b-44c3-9cec-7a066aa08ecf].
[Consumer-1] GET [2f24985b-009b-44c3-9cec-7a066aa08ecf].
[Producer] PUT [b4332823-c1a2-4587-bf5f-1f67407d6945].
[Consumer-2] GET [b4332823-c1a2-4587-bf5f-1f67407d6945].
[Producer] PUT [33edcd78-1b14-4913-afe2-7f44d76db50b].
[Consumer-1] GET [33edcd78-1b14-4913-afe2-7f44d76db50b].
“`