callstack - How to get the name of the calling class in Java?

Question

I would like some help on this matter,

Example:

public class A {
    private void foo() {
        //Who invoked me?
    }
}

public class B extends A {}

public class C extends A {}

public class D {
     C.foo();
}

This is basically the scenario. My question is how can method foo() know who is calling it?

EDIT: Basically I am trying to do a database Layer, and in class A I will create a method that will generate SQL statements. Such statements are dynamically generated by getting the values of all the public properties of the calling class.

Answer 1

Easiest way is the following:

String className = new Exception().getStackTrace()[1].getClassName();

But in real there should be no need for this, unless for some logging purposes, because this is a fairly expensive task. What is it, the problem for which you think that this is the solution? We may come up with -much- better suggestions.

Edit: you commented as follows:

basically i'am trying to do a database Layer, and in Class A i will create a method that will generate sql statements, such statements are dynamically generated by getting the values of all the public properties of the calling class.

I then highly recommend to look for an existing ORM library, such as Hibernate, iBatis or any JPA implementation to your taste.