What are some examples of generics in interfaces?

What are some examples of generics in interfaces?

Generics in interfaces allow you to define a contract that can work with any data type. For example, consider a simple interface like this: interface Box<T> { T getContent(); void setContent(T content); } This interface can be used with any type, such as Box<Integer> or Box<String>.

Can you give me a practical example of using this Box interface?

Sure! Here's how you might implement the Box interface for a specific type:

class IntegerBox implements Box<Integer> {
    private Integer content;

    public Integer getContent() { return content; }
    public void setContent(Integer content) { this.content = content; }
}

You can create an IntegerBox object and use it to store integers.

What are the benefits of using generics in interfaces?

Using generics in interfaces provides type safety, reduces code duplication, and increases code reusability. It allows you to create more flexible and maintainable code.

Are there any limitations to using generics?

Yes, some limitations include type erasure, which means that generic type information is not available at runtime, and you cannot use primitive types directly as type parameters.