学步园

public class Test implements Runnable...{
  
    public int x;
    

      // public synchronized void run()
    public void run() ...{
    System.out.println("threading running ..." + Thread.currentThread().getName());
    int hold ;
    //synchronized(this)
    ...{
        for(;;)...{
    
            hold = x + 1 ;
            try...{
            Thread.sleep(5000);
            }catch(Exception e)...{
            e.getCause();
            }
            x = hold;
            System.out.println(Thread.currentThread().getName()+" value x: " + x);
        }
    }
    
    }
    
    public static void main(String[] args) ...{
    System.out.println("threading ...");
    Test test1 = new Test();
    Thread one = new Thread(test1);
    Thread two = new Thread(test1);
    one.start();
    two.start();
    }
}

threading ...
threading running ...Thread-0
threading running ...Thread-1
Thread-0 value x: 1
Thread-1 value x: 1
Thread-0 value x: 2
Thread-1 value x: 2
Thread-0 value x: 3
Thread-1 value x: 3
Thread-0 value x: 4
Thread-1 value x: 4
Thread-0 value x: 5
Thread-1 value x: 5
Thread-0 value x: 6
Thread-1 value x: 6
Thread-0 value x: 7
Thread-1 value x: 7