What are some examples of generics in programming?

What are some examples of generics in programming?

Generics allow you to write flexible and reusable code. For example, in Java, you can create a generic class like Box<T> that can hold any type.

Can you give me a specific example of how to use a generic class?

Sure! Here's a simple example in Java:

class Box<T> {
    private T item;

    public void setItem(T item) {
        this.item = item;
    }

    public T getItem() {
        return item;
    }
}

public class Main {
    public static void main(String[] args) {
        Box<String> stringBox = new Box<>();
        stringBox.setItem("Hello");
        System.out.println(stringBox.getItem());
    }
}

What are the benefits of using generics?

Generics provide type safety, reduce code duplication, and improve code readability. They help catch errors at compile time rather than runtime.

Are there any downsides to using generics?

One downside is that they can add complexity to your code. Additionally, type erasure in Java means that some type information is lost at runtime.