According To Ali

This is how I would think of an application at the very basic level: Now this works great. But one thing that is missing in this picture is Exception Handling . In many cases we pay very less attention to it and take it as "we'll cross that bridge when it'll come to that". We can get away with this as in many application as exceptions does not stop it from being in the state "is the application working" as long as we code it carefully and at the very least handling the exceptions in code blocks. This works. But we end up having try catch and if else everywhere and often with messy or no direction to what type of exception is to be handled where and how. Nonetheless, when it comes down an enhancement that depends upon different types exceptions, we will end up writing/modifying code every where, resulting in even messier code. I'm sure no one wants that. Even, in scenarios, a custom handler is not the answer either. Cause this way we will s