Hi everyone. I need help in one problem which I want to solve. How to create (connect) a class using data of two other. For example I have this kind of situation: class Car private String name; private int productionYear; ..... class SpeedCar extend Car private int maxspeed; ..... class Audi extend Car private String colour; Now I want to create last class named SpeedCarAudi which will take all data from this two up and of cource from class Car. This should be done using interface. Later in Main I should create objects for Car, SpeedCar, Audi and SpeedCarAudi. Thanks for any adivse