What is the difference between ClassNotFoundException and ClassDefNotFoundException

Question

What is the difference between ClassNotFoundException and ClassDefNotFoundException I know that both are subclass of Exception.

Got some explanation for ClassNotFoundException from this question. What is the difference between NoClassDefFoundError and ClassNotFoundException?

I read Java doc for ClassDefNotFoundException and it says:

ClassDefNotFoundException is thrown when the definition of a class cannot be found be the OWB typing system.

Please elaborate above statement, I am unaware of OWB typing system. And what exactly is the difference between both the classed and when these Exceptions are raised.

Answer 1

ClassNotFoundException is a core Java exception.

ClassDefNotFoundException is an "Oracle Warehouse Builder" exception (which in all likelihood just wraps a ClassNotFoundException).