Can synchronized( someObj ) ever throw an exception?

[Dan Bizman]

I know that object.wait() can throw an exception (IllegalMonitorStateException or InterruptedException) can synchronized ever do the same?

For example:

synchronized( obj ) //does this line ever throw an exception?
{
}

What is that synchronized line in byte code?

[marc weber]

If you try to synchronize on a null reference, a NullPointerException will be thrown. (See JLS - 14.19.)