ダネ第三課:マルチスレッド

 1 public class MyThread extends Thread {

 2     public static int i=0;

 3     

 4     public static synchronized void test(int x){

 5         System.out.println(i+"::::");

 6         i=x+i;

 7     }

 8     

 9     public void run(){

10         //the method is overwritten 

11 //        int i=0;

12         while(true){

13 //            System.out.println(i+"::::");

14 //            i++;

15             test(1);

16             if(i>1000)

17                 break; //exit the loop 

18         }

19     }

20     

21     

22     public static void main(String[] args) {

23         MyThread m= new MyThread();

24         

25         StaticClassThread sct=new StaticClassThread();

26         Thread t = new Thread(sct);

27         

28         m.start();

29         t.start();

30     }

31     

32     public static class StaticClassThread implements Runnable{

33 

34         @Override

35         public void run() {

36             // TODO Auto-generated method stub

37 //            int i=0;

38             while(true){

39 //                System.out.println("::::"+i);

40 //                i--;

41                 test(-1);

42                 if(i<-1000)

43                     break;

44             }

45         }

46         

47     }

48 }