reentrant synchronization

Question

Can you tell me if following invocations are reentrant or not?

public class Foo {

  public synchronized void doSomething() {}

  public synchronized void doAnot         


        

Answer 1

first of all locks are applicable on objects so need to create the object and then apply the lock.

are 2 continuous invocations in method doToo() reentrant? I

In your case they are not re-entrant . if code is something like below then they will be re-entrant .

  public class Foo {

 public synchronized void doSomething() {
        doAnotherSomething();
}

 public synchronized void doAnotherSomething() {}
}

Once lock has been acquired on one object then on same object it can traverse like in above case.