Can I access one object from another?

[Jake Bailey]

In my main class (really long), I create a Settings object (a JFrame) and a Game object.

What I would like to know is if it's possible to have that JFrame access methods in the Game object, without adding more methods to the main class.

For example:

public class Tester {
 
    public static void main(String[] args) {
 
        ClassA objectA = new ClassA();
        ClassB objectB = new ClassB();
 
    }
 
}
 

And then objectA can execute methods in objectB without having to call a method from Tester which then calls the method from objectB.