package jvm;

public class SynAddRunable implements Runnable {
 Integer a = 1;
 Integer b = 2;

 public SynAddRunable(int a, int b) {
 this.a = a;
 this.b = b;
 }

 @Override
 public void run() {
 synchronized (a) {
 synchronized (b) {
 System.out.println(a+b);
 }
 }
 }

 public static void main(String[] args) {
 for (int i = 0; i < 200; i++) {
 new Thread(new SynAddRunable(1, 2)).start();
 new Thread(new SynAddRunable(2, 1)).start();
 }
 }

}