public class Counter {
    private long c1 = 0; private long c2 = 0;


    private Object lock1 = new Object();
    private Object lock2 = new Object();


    public void inc1() {
    	synchronized(lock1) {
    	    try {
    		c1++;
    		Thread.sleep(1);
    	    } catch (InterruptedException e) {
		// some code
    	    }
    	}
    }

    public void inc2() {
    	synchronized(lock2) {
    	    try{
    		c2++;
    		Thread.sleep(1);
    	    } catch (InterruptedException e) {
		// some code
    	    }
    	}
    }

    public long get_c1() {
	return(c1);
    }

    public long get_c2() {
	return(c2);
    }
}