What are built-in annotations in Java?

What are built-in annotations in Java?

Built-in annotations in Java are predefined annotations provided by the Java language, such as @Override, @Deprecated, and @SuppressWarnings. They help in providing metadata about the code.

Can you explain what @Override does?

Sure! The @Override annotation indicates that a method is intended to override a method in a superclass. It helps catch errors at compile time if the method does not actually override a method from its superclass.

What about @Deprecated?

The @Deprecated annotation marks a method or class as outdated and suggests that it should not be used. It serves as a warning to developers that there may be a better alternative.

Are there any other built-in annotations I should know about?

Yes, another important one is @SuppressWarnings, which tells the compiler to ignore specific warnings for the annotated element. It's useful for cleaning up warning messages.