When should I use wrapper classes in programming?

What are wrapper classes in programming?

Wrapper classes are used to encapsulate primitive data types in objects, allowing them to be treated as objects.

When should I use wrapper classes instead of primitive types?

You should use wrapper classes when you need to work with collections, or when you require methods that operate on objects.

Can you give me an example of using a wrapper class?

Sure! For instance, using Integer instead of int allows you to store null values in a collection like ArrayList.

Are there any performance considerations with wrapper classes?

Yes, wrapper classes can introduce overhead due to boxing and unboxing, so use them judiciously in performance-critical applications.