import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class MutexExample {
private Lock lock = new ReentrantLock();
public void doSomething() {
lock.lock();
try {
} finally {
lock.unlock();
}
}
}
import java.util.concurrent.Semaphore;
public class SemaphoreExample {
private Semaphore semaphore = new Semaphore(3);
public void doSomething() {
try {
semaphore.acquire();
} catch (InterruptedException e) {
} finally {
semaphore.release();
}
}
}
import java.util.concurrent.CountDownLatch;
public class CountDownLatchExample {
private CountDownLatch latch = new CountDownLatch(5);
public void doSomething() {
try {
latch.countDown();
latch.await();
} catch (InterruptedException e) {
}
}
}
