What are some examples of generics in collections?

What are some examples of generics in collections?

Generics in collections allow you to define classes, interfaces, and methods with a placeholder for the type of data they store. For example, in Java, you can use ArrayList<T> where T can be any type.

Can you give me a specific example using Java?

Sure! In Java, you can create an ArrayList<String> to store a list of strings. Here's how you would declare it: ArrayList<String> list = new ArrayList<>(); You can then add strings to this list.

What about in C#? How do generics work there?

In C#, generics work similarly. You can use List<T> where T is the type parameter. For example, List<int> numbers = new List<int>(); creates a list that can only hold integers.

Are there any advantages to using generics?

Yes, using generics provides type safety, reduces code duplication, and improves performance by eliminating the need for type casting.