Exceptions

We can actually use if else blocks to check exceptions. But it becomes too messy and unreadable. So we use try catch blocks. When an exception occurs an object of the corresponding exception class is instantiated. So, if not handled, will result in the program to crash. So, we catch that exception in the catch block.

A try can have many catches but only a finally block. Finally block always execute. And when u r catching a class and its child class exceptions, child class should be written in catch block before the parent.