Java provides many exception classes that directly subclass Exception. Here are three examples: CloneNotSupportedException signals an attempt to clone an object whose class doesn’t implement the ...

An example of a checked exception is java.io.IOException. ... Case 3 meets midway between the two extremes of Case 1 and 2 by using a custom exception class called TravelException.

For example, it may be more appropriate to catch than to throw an exception, in which case, depending on how you deal with the exception, you may never get as far as the exception handler.