1. to wrap primitive into object forms so that we can handle primitives also just like objects. 2. To define several utility methods which are required for primitives. Constructors Almost all wrapper ...

Why do we need wrapper classes? Sometimes a method requires a reference to an object rather than a primitive value. We can wrap a primitive value by creating a wrapper class instance and provide the ...

Invoke Servlet Methods From Java AppsDavid TayouriListing 4. Changing the wrapper class to its primitive type.

But primitive types aren’t objects, and that presents a problem. For example, all the collection classes in the JDK hold data as objects. If a developer has a set of int values they want to store in ...