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What queues do you know for multithreading in Java?

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Answer from AI

In Java, various types of queues from the java.util.concurrent package are often used for multithreading:

  • ConcurrentLinkedQueue — a non-blocking linked list-based queue suitable for multithreaded access without locks.
  • LinkedBlockingQueue — a blocking queue with an optional capacity limit, often used to implement thread pools.
  • ArrayBlockingQueue — a blocking queue with a fixed size based on an array, providing strict FIFO order.
  • PriorityBlockingQueue — a priority queue with blocking capabilities, useful for processing tasks based on priority.
  • SynchronousQueue — a queue without internal capacity, where each put must wait for a take, used for direct data transfer between threads.

Example of using LinkedBlockingQueue:

import java.util.concurrent.*;

BlockingQueue<String> queue = new LinkedBlockingQueue<>();

// Producer
new Thread(() -> {
    try {
        queue.put("Task");
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
    }
}).start();

// Consumer
new Thread(() -> {
    try {
        String task = queue.take();
        System.out.println("Processing: " + task);
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
    }
}).start();

These queues help safely exchange data between threads and manage load.

What queues do you know for multithreading in Java… - sobes.tech