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.

Some exceptions in Java must be handled in the developer's code. Other exceptions can occur without any exception handling semantics at all. When an exception must be handled with try-and-catch ...