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();
        }
    }

}