Explain the user defined Exceptions in java?

Question

Hello
Explain the user defined Exceptions in java?
please reply me. i am waiting for your reply.
Thanx

Answer 1

User defined Exceptions are the separate Exception classes defined by the user for specific purposed. An user defined can created by simply sub-classing it to the Exception class. This allows custom exceptions to be generated (using throw) and caught in the same way as normal exceptions.
Example:
class myCustomException extends Exception {
// The class simply has to exist to be an exception
}