Master Exception Handling in Spring Boot: @ExceptionHandler & @ControllerAdvice Explained

[@AdarshSingh-j1q]

Don't use dark theme, In intelij and postman, Unable to see text.

[@CodeSnippet.java.]

Noted. Thanks for feedback

[@universal4334]

Let's say in my service class, I'm doing multiple operations to return something to controller. Out of those many operations in service, i may get 10 different exceptions, so do i need to catch specific exceptions or directly catch generic exception in service and throw our custom exception, so that even we don't handle specific exception or anything in controller, restcontroller advice catches our custom exception

[@CodeSnippet.java.]

Great question! It's a good practice to catch specific exceptions as much as possible in your service layer, as it gives more clarity on what went wrong and helps you handle different scenarios appropriately. However, if you have several different exceptions, you can group them and map them to a custom exception, which can then be handled by the @ControllerAdvice. For example, you could catch specific exceptions like NullPointerException, IllegalArgumentException, etc., in your service, then wrap them in a custom exception (e.g., CustomServiceException). This custom exception can be handled centrally in @ControllerAdvice. Catching a generic Exception directly in the service might hide the actual problem, making debugging difficult. Always try to handle known exceptions first, then fall back on generic handling if necessary. This way, your @ControllerAdvice can consistently handle the custom exception and return a proper response to the client.

[@kapilpandey806]

How much time to enough to learn spring boot from scratch? And what should I need to learn for 2 to 3 year experience person . Earlier worked on core java and SQL .please guide me

[@mahady_hasan_fahim]

Thanks you. I learn new topics from your video. But you don't provide source code -_-

[@CodeSnippet.java.]

I have updated project link in description

[@ijaysingh5762]

can you provide notes

[@CodeSnippet.java.]

Sure