How do I use java.util.concurrent in my Java application?

How do I use java.util.concurrent in my Java application?

You can use the java.util.concurrent package to manage threads and synchronization in Java. It provides high-level concurrency utilities.

Can you give me an example of using ExecutorService?

Sure! Here's a simple example:

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class Main {
    public static void main(String[] args) {
        ExecutorService executor = Executors.newFixedThreadPool(2);
        executor.submit(() -> System.out.println("Task 1"));
        executor.submit(() -> System.out.println("Task 2"));
        executor.shutdown();
    }
}

What about using CountDownLatch?

You can use CountDownLatch to make one or more threads wait until a set of operations being performed in other threads completes. Here's an example:

import java.util.concurrent.CountDownLatch;

public class Main {
    public static void main(String[] args) throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(2);
        new Thread(() -> {
            // Simulate work
            latch.countDown();
        }).start();
        new Thread(() -> {
            // Simulate work
            latch.countDown();
        }).start();
        latch.await(); // Wait until both threads finish
        System.out.println("Both tasks completed!");
    }
}