What are best practices for working with CountDownLatch?

CountDownLatch is a synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes. This can be useful in scenarios where you want to ensure certain tasks finish before proceeding. Here are some best practices for using CountDownLatch in Java:

CountDownLatch, Java concurrency, thread synchronization, best practices, Java programming


            // Import necessary classes
            import java.util.concurrent.CountDownLatch;

            public class CountDownLatchExample {

                public static void main(String[] args) {
                    // Create a CountDownLatch initialized to 3
                    final CountDownLatch latch = new CountDownLatch(3);

                    // Create and start three worker threads
                    for (int i = 0; i < 3; i++) {
                        new Thread(new Worker(latch)).start();
                    }

                    // Wait for all workers to finish
                    try {
                        latch.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                    System.out.println("All workers have finished!");
                }

                static class Worker implements Runnable {
                    private final CountDownLatch latch;

                    Worker(CountDownLatch latch) {
                        this.latch = latch;
                    }

                    @Override
                    public void run() {
                        try {
                            // Simulate work
                            System.out.println(Thread.currentThread().getName() + " is working...");
                            Thread.sleep((long) (Math.random() * 1000));
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        } finally {
                            latch.countDown(); // Decrement the latch count
                            System.out.println(Thread.currentThread().getName() + " finished working.");
                        }
                    }
                }
            }

What are best practices for working with CountDownLatch?

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What are best practices for working with CountDownLatch?

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