Java projects rarely feature a consistent and thorough exception-handling strategy. Often, developers add the mechanism as an afterthought or an as-you-go addition.

EXCEPTION HANDLING IS a very powerful and useful feature of the Java language. With this power comes a degree of complexity that must be understood to effectively utilize exception handling in Java ...

A good example would be the FileNotFoundException.This does exactly what it says on the tin: this exception is “thrown” when Java looks for a particular file and can’t find it.