1 class PR27908 2 { main(String[] argv)3 public static void main (String[] argv) 4 throws InterruptedException 5 { 6 run1 r1 = new run1(); 7 run2 r2 = new run2(); 8 run3 r3 = new run3(); 9 10 Thread t1, t2, t3; 11 12 (t1 = new Thread (r1)).start(); 13 (t2 = new Thread (r2)).start(); 14 (t3 = new Thread (r3)).start(); 15 16 while (! (r1.isRunning() && r2.isRunning() && r3.isRunning())) 17 Thread.yield(); 18 19 r1.stop(); 20 r2.stop(); 21 r3.stop(); 22 23 Thread.sleep(5000); 24 25 if (t1.isAlive() || t2.isAlive() || t3.isAlive()) 26 { 27 System.out.println ("fail"); 28 System.exit(1); 29 } 30 } 31 32 private static class run1 implements Runnable 33 { 34 volatile int counter; 35 volatile boolean running; 36 run()37 public void run () 38 { 39 counter = 0; 40 running = true; 41 while (running) 42 counter++; 43 } 44 stop()45 void stop () 46 { 47 running = false; 48 } 49 isRunning()50 public boolean isRunning() 51 { 52 return running; 53 } 54 } 55 56 private static class run2 implements Runnable 57 { 58 volatile int counter; 59 boolean running; 60 run()61 public void run () 62 { 63 counter = 0; 64 running = true; 65 while (running) 66 counter++; 67 } 68 stop()69 void stop () 70 { 71 running = false; 72 } 73 isRunning()74 public boolean isRunning() 75 { 76 return running; 77 } 78 } 79 80 static class run3 implements Runnable 81 { 82 volatile int counter; 83 private volatile boolean running; 84 run()85 public void run () 86 { 87 counter = 0; 88 running = true; 89 while (running) 90 counter++; 91 } 92 stop()93 void stop () 94 { 95 running = false; 96 } 97 isRunning()98 public boolean isRunning() 99 { 100 return running; 101 } 102 } 103 } 104