@Override is not allowed when implementing interface method

Question

I have the problem mentioned in the title. You could say that this thread duplicates another one: How do I turn off error validation for annotations in IntelliJ IDEA?

Bu

Answer 1

In JIdea 2020.1.2 and above,

1. Go to Project Structure [ Ctrl+Alt+Shift+S ]
2. Select Modules sub section
3. Select each module
4. Under sources-section, check Language Level
5. Change the Language Level as required

NOTE:

If you get below error after this change,

Error:java: Compilation failed: internal java compiler error

You have to change the target bytecode version as well.

1. Go to Settings [ Ctrl+Alt+S ]
2. Select Java Compiler
3. Select module in the table
4. Change the byte-code version to map what you selected in the previous step for language-level