What are generics in interfaces and how do they work?

What are generics in interfaces and how do they work?

Generics in interfaces allow you to define a type parameter that can be replaced with a specific type when the interface is implemented. This provides flexibility and type safety.

Can you give me an example of a generic interface?

Sure! Here's a simple example:

interface Box<T> {
    void add(T item);
    T get();
}

In this example, Box is a generic interface that can hold any type T.

How do I implement this generic interface in a class?

You can implement the Box interface like this:

class StringBox implements Box<String> {
    private String item;
    
    public void add(String item) {
        this.item = item;
    }
    
    public String get() {
        return item;
    }
}

What are the benefits of using generics in interfaces?

The benefits include type safety, code reusability, and the ability to create more flexible and maintainable code.