When should I use annotations in my code?

When should I use annotations in my code?

Annotations are useful for adding metadata to your code, improving readability, and providing hints to the compiler.

Can you give me some examples of where annotations are commonly used?

Sure! Annotations are often used in frameworks like Spring for dependency injection, or in JPA for database mapping.

Are there any performance implications of using annotations?

Generally, annotations have minimal performance impact, but excessive use can lead to slower compile times.

How do annotations differ from comments?

Annotations are processed by the compiler or frameworks, while comments are ignored and meant for human readers.