How to implement boxing and unboxing in my own class?

Question

In Java there is no operator overriding like i C++ so I can't figure out how to implement a boxing/unboxing for my own class.

For example it's possibile to use boxing and unboxing with Integer or Float when we do somethings like this:

int myVar = new Integer(25);

But how can I implement something similar in my class MyObject? (in the case I want to wrap a primitive type myself). Is there any code example?

Answer 1

There is no way to implement auto-boxing and auto-unboxing for a user-defined class.

You can of course provide named methods to do the job. However, you would have to call them explicitly every time you need to box or unbox something.