lock acquired on a class ??

[Rajeev Ravindran]

hi all,
i found this question and answer in some site ..
Can a lock be acquired on a class?
Yes, a lock can be acquired on a class. This lock is acquired on the class's Class object.
can any1 tell me more abt gettting lock on class's Class object ...how is it done ??
thanks
raj

[Peter den Haan]

public class FooBar {
    public static synchronized foo() {
        // foo
    }
    public bar() {
        synchronized(FooBar.class) {
            // bar
        }
    }
}

Both methods acquire a lock on the FooBar.class object. It's a Java object like any other, of class Class, so it's got a monitor lock like any other.
- Peter