Help with java class, subclass

[dhevian]

Hello,
I need help with my work. I'm no good at programming and we started learning java last week, yet we got a hard task to do and i have no idea how to do it. If you could help me with it I would be very grateful.
The task:

Requirements
- implement a class 'motor' with fields 'currentSpeed', 'currentDirection', 'id' and methods 'turnLeft()', 'turnRight()'
- implement basic user interface for controlling the engine
- implement at least two subclasses for different/various electric motors (i.e. a stepperMotor, DCMotor, etc.)
- implement subclass-specific (hardware-dependant) methods
- implement output to see how it works
- implement input for choosing,initializing,operating the motors

Inputs (user can
- coosing a motor subclass
- initializing a motor
- determining state of a motor
- using the motor (left/right)

Outputs (we will see
- all public variables/fields that change value
- internal behaviour of hardware-dependant methods (i.e. logic value of the pins connected to motors)

[Xeel]

Pretty enough to complete the task: http://lmgtfy.com/?q=java+interface+explained

Recommended structure:
- interface Engine (here go the methods declarations)
- class (can be abstract) Motor as Engine implementation (here go the motor methods implementation or their redeclaration)
- class Motor1 extending class Motor (here go the motor specific methods overrides)
- class Motor2 extending class Motor (here go the motor specific methods overrides)
- for test and runs you could use a separate class with the main function