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Java Exception Simplified

After scolding multiple time about not to do things, man commits mistakes. To handle that consequences we have Exception Handling. There are such mistakes whose consequences can be handle and there are other whose consequences can not be handle. They are totally depends upon gods fate.
 In technical term , exception that are checked at compile time are Checked Exceptions
and others are Unchecked Exceptions.This two types are present in Java but not in C++ (other OOP Language). In C++ , all exceptions are unchecked and compile does not force to handled them.

In Java they are categorized as follows


Point to consider is that Error are related to hardware failure and ultimately you can not control them from software.
There are many well-know exceptions are present and they are all categorized among Exception, RuntimeException and Error.


Why all exceptions extends Throwable?
            It has very simple and one word explanation that Java supports only Single Inheritance.

Why we need exception handling?
          We need it for safety and for failure recovery.

When we use checked or unchecked exceptions?
       If a client can reasonably be expected to recover from an exception, make it a checked exception  otherwise make it an unchecked exception


References:
http://docs.oracle.com/javase/tutorial/essential/exceptions/runtime.html



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