What are the differences between generics and raw types in Java?

What are the differences between generics and raw types in Java?

Generics provide type safety and eliminate the need for casting, while raw types are the non-generic versions of classes.

Can you give me an example of using generics?

Sure! For instance, using List<String> allows you to create a list that only holds strings, ensuring type safety.

What happens if I use raw types instead?

Using raw types can lead to runtime errors since you lose type safety, and you may need to cast objects when retrieving them.

Are there any performance differences?

Generally, there are no significant performance differences, but generics can help avoid unnecessary casting, which can improve code clarity.

When should I use generics over raw types?

You should use generics whenever possible to ensure type safety and to take advantage of compile-time checks.