// @topic S-0303-03-02-05 Java MVC Architecture Demo 3 // @brief class Elevator (business object for Data Tier) package radio_button_test; public class Elevator { //------------------------------ // constants //------------------------------ public static final int DIRECTION_STATIONARY = 0; public static final int DIRECTION_UP = +1; public static final int DIRECTION_DOWN = -1; //------------------------------ // data //------------------------------ private int currentFloor; private int direction; // +1-up, -1=down, 0=stationary //------------------------------ // constructors //------------------------------ public Elevator( int floor ) { currentFloor = floor; direction = DIRECTION_STATIONARY; }//Elevator //------------------------------ // operations //------------------------------ public void move() { // <begin> for debugging purposes only: if ( direction == DIRECTION_STATIONARY ) direction = DIRECTION_UP; ElevatorBank bank = ElevatorBank.bankInstance; if ( currentFloor == bank.getMaxFloor() ) direction = DIRECTION_DOWN; if ( currentFloor == 1 ) direction = DIRECTION_UP; // <end> currentFloor += direction; }//move public int getCurrentFloor() { return currentFloor; }//getCurrentFloor public int getDirection() { return direction; }//getDirection public void setDirection(int direction) { this.direction = direction; }//setDirection }//class Elevator