Advantage of @SuppressWarnings annotation

Question

@SuppressWarnings annotation is for cleaner code or by adding it is there any performance gain or any advantage ?

or can we reduce compile time by doing so.

Answer 1

The @SuppressWarnings annotation type allows Java programmers to disable compilation warnings for a certain part of a program (type, field, method, parameter, constructor, and local variable). Normally warnings are good. However in some cases they would be inappropriate and annoying. So programmers can choose to tell the compiler ignoring such warnings if needed.

There is no relation with performance.

The developer who wrote the code knew that it was always going to be safe, decided to use @SuppressWarnings("unchecked") to suppress the warning at compilation.

As mentioned by others, it is just a trust between the developer and code written.

more info here and here