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  1.  
  2.  
  3. class J {
  4.     public static void main(String args[]) throws InterruptedException {
  5.         final Account a = new Account();
  6.         Job r = new Job(a);
  7.  
  8.         int n = 0;
  9.         Thread[] threads = new Thread[n];
  10.         for (int i = 0; i < n; ++i) {
  11.         	Thread t = new Thread(r); 
  12.         	threads[i] = t;
  13.         	t.start();
  14.         }
  15.         for (Thread t : threads) {
  16.         	t.join();
  17.         }
  18.  
  19.         System.out.println(a.n);
  20.     }
  21. }
  22.  
  23. class Job implements Runnable {
  24. 	Account a;
  25.  
  26. 	public Job(Account a) {
  27. 		this.a = a;
  28. 	}
  29.  
  30. 	public void run() {
  31.     	int dotori2 = ((int)(Math.random() * 10) + 1) * 1000;
  32.     	System.out.println(dotori2);
  33. 		try {
  34.     		Thread.sleep(1000);
  35.     	} catch(Exception e) {
  36.  
  37.     	}
  38.         a.plus(dotori2);
  39.     }
  40. }
  41.  
  42. class Account {
  43.     int n = 0;
  44.  
  45.     public synchronized void plus(int amount){
  46.     	if (amount > 0) {
  47.     		n -= amount;
  48.     	}
  49.     } 
  50. }
Success #stdin #stdout 0.06s 380224KB
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https://ideone.com/3lfIBJ
language:
Java (HotSpot 12)
created:
13 years ago
visibility:
public

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