Question

Is there a way for a Java class to have an awareness of its instantiator? For example:

public class Foo() {

    public Foo() {
        // can I get Bar.myInteger from here somehow 
        // without passing it in to the constructor?
    }
}

public class Bar {
    private int myInteger;

    public Bar() {
        myInteger = 0;

        Foo foo = new Foo();
    }
}

Answer 1

Is there any particular reason you don’t want to pass anything in the constructor?

Simply put, this violates the encapsulation principle… and probably several others as well.