Sizeof unknown type object

Question

I have to get size of object which type I does not know. It's a template where I want to achieve sth like this:

 void sth(T data)
 {
    System.out.println("Data size = ", sizeof(data));
 }

How I can do this in Java?

sizeof - like a C sizeof ;)

Answer 1

It is not an easy task. You have to use java's Instrumentation.

Here is an example.