What is the role of a wrapper class?

The role of a wrapper class is to convert primitive data types into objects. In Java, for instance, each primitive type—such as int, char, and boolean—has a corresponding wrapper class like Integer, Character, and Boolean. This conversion is essential because Java collections, such as ArrayLists, cannot store primitive types directly; they require objects. By using wrapper classes, developers can take advantage of the object-oriented features of Java while still working with the primitive data types. Additionally, wrapper classes provide utility methods that can be useful for operations involving these data types, enhancing functionality beyond what primitives provide on their own.