import java.util.concurrent.Semaphore;
public class T11_TestSemaphore {public static void main(String[] args) {Semaphore s = new Semaphore(2);new Thread(()->{try {s.acquire();System.out.println("T1 running...");Thread.sleep(200);System.out.println("T1 running...");} catch (InterruptedException e) {e.printStackTrace();} finally {s.release();}}).start();new Thread(()->{try {s.acquire();System.out.println("T2 running...");Thread.sleep(200);System.out.println("T2 running...");} catch (InterruptedException e) {e.printStackTrace();} finally {s.release();}}).start();}
}

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