Can a synchronized block/method be interrupted?

While I know the theoretical differences between Re-EntrantLocks and synchronized , I'm confused to the below point.

See this statement from an article on Javarevisited comparing synchronized and Lock objects:

One more worth noting difference between ReentrantLock and synchronized keyword in Java is, ability to interrupt Thread while waiting for Lock. In case of synchronized keyword, a thread can be blocked waiting for lock, for an indefinite period of time and there was no way to control that. ReentrantLock provides a method called lockInterruptibly(), which can be used to interrupt thread when it is waiting for lock. Similarly tryLock() with timeout can be used to timeout if lock is not available in certain time period.

As per the above statement, I did try interrupting the Thread waiting() on synchronized method (ie blocking wait) and it did throw an InterruptedException. But this behavior is contradictory with what is stated in the above statement.

// this method is called from inside run() method of every thread. 
public synchronized int getCount() {
        count++;
        try {
            Thread.sleep(3000);
            System.out.println(Thread.currentThread().getName() + " gets " + count);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return count;
}

....
....
t1.start();
t2.start();
t3.start();
t4.start();

t2.interrupt();

Here is the output that I got :

Thread 1 gets 1
Thread 4 gets 2
Thread 3 gets 3  
java.lang.InterruptedException: sleep interrupted
    at java.lang.Thread.sleep(Native Method)
    at locks.SynchronizedLockInterrupt.getCount(SynchronizedLockInterrupt.java:10)  
    at locks.SynchronizedLockInterrupt$2.run(SynchronizedLockInterrupt.java:35)  
    at java.lang.Thread.run(Unknown Source)  

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I'm confused if my example is not correct or the quoted statement about synchronized() is incorrect?

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你不中断同步，你正在中断sleep() 。

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