Semaphore

import java.util.concurrent.Semaphore ;

public class Example extends Thread{

            int id;

            static Semaphore semaphore = new Semaphore (1);

            public Example(int id){

                        this.id= id;

                        }

            public void run(){ /*fonksiyon run()*/

                        try {

           

                        semaphore.acquire(); /*kritik bölge başlangıcı*/

           

                        }catch (InterruptedException e) {}

                        System.out.println("Kritik bolge"+getName());

                        semaphore.release();           

                        System.out.println("Thread birakildi:"+getName());

                        }

            public static void main(String[] args){

                        Example esim1= new Example(5);

                        Example esim2= new Example(2);

                        esim1.start(); //thread başlat

           

                        esim2.start();