JAVA – codewindow.in

import java.util.concurrent.CountDownLatch;

public class Example {
    public static void main(String[] args) throws InterruptedException {
        int numThreads = 5;
        CountDownLatch latch = new CountDownLatch(numThreads);
        
        for (int i = 0; i < numThreads; i++) {
            Thread t = new Thread(() -> {
                // Do some work
                latch.countDown(); // Signal that the work is done
            });
            t.start();
        }
        
        latch.await(); // Wait for all threads to finish
        
        System.out.println("All threads have finished");
    }
}