1 package test.synchornize;
2
3 import java.util.concurrent.locks.*;
4
5 class runab implements Runnable{
6 boolean x = true;
7 static Lock lock = new ReentrantLock();
8 static Condition con1 = lock.newCondition();
9 static Condition con2 = lock.newCondition();
10 runab(boolean x){
11 this.x = x;
12 }
13 public void run() {
14 lock.lock();
15 try {
16 System.out.println("Start---" + Thread.currentThread().getName());
17 if(x) {
18 x = false;
19 //try {con1.await();con2.await();} catch (InterruptedException e) {}
20 try {con1.await();} catch (InterruptedException e) {}
21 }
22 System.out.println("End---" + Thread.currentThread().getName());
23 } finally {
24
25 //con2.signalAll();
26 con1.signalAll();
27 lock.unlock();
28 }
29 }
30 }
31
32 public class showLock {
33
34 public static void main(String[] args) {
35 runab rab = new runab(true);
36 runab rab1 = new runab(false);
37 Thread th = new Thread(rab);
38 Thread th1 = new Thread(rab1);
39 th.start();
40 try {
41 Thread.sleep(100);
42 } catch (InterruptedException e) {
43 // TODO Auto-generated catch block
44 e.printStackTrace();
45 }
46 th1.start();
47
48 }
49
50 }
