package geym.conc.ch2.sync.lockonint;

public class BadLockOnInteger2 implements Runnable{
    public static Integer i=0;
    static BadLockOnInteger2 instance=new BadLockOnInteger2();
    @Override
    public void run() {
        for(int j=0;j<10000000;j++){
            synchronized(i){
//            synchronized(instance){
                i=Integer.valueOf(i.intValue()+1);
            }
        }
    }
    
    public static void main(String[] args) throws InterruptedException {
        Thread t1=new Thread(instance);
        Thread t2=new Thread(instance);
        t1.start();t2.start();
        t1.join();t2.join();
        System.out.println(i);
    }
}