What are bounded type parameters in Java?

What are bounded type parameters in Java?

Bounded type parameters in Java allow you to restrict the types that can be used as arguments for a type parameter. This is done using the extends keyword.

Can you give me an example of how to use bounded type parameters?

Sure! Here's a simple example: public <T extends Number> void process(T number) { ... } This method can accept any type that is a subclass of Number.

What happens if I try to use a type that doesn't extend Number?

If you try to use a type that doesn't extend Number, you'll get a compile-time error, ensuring type safety.

Are there any other keywords for type parameters?

Yes, you can also use the super keyword for lower bounds, which allows you to specify that a type parameter must be a supertype of a specified type.