public class Elevator { public boolean doorOpen=false; public int currentFloor = 1; public final int TOP_FLOOR = 5; public final int BOTTOM_FLOOR = 1; public void openDoor() { System.out.println("Opening door."); doorOpen = true; System.out.println("Door is open."); } public void closeDoor() { System.out.println("Closing door."); doorOpen = false; System.out.println("Door is closed."); } public void goUp() { if (checkDoorStatus()) { // Is door open? closeDoor(); } System.out.println("Going up one floor."); currentFloor++; System.out.println("Floor: " + currentFloor); } public void goDown() { if (checkDoorStatus()) { // Is door open? closeDoor(); } System.out.println("Going down one floor."); currentFloor--; System.out.println("Floor: " + currentFloor); } public void setFloor(int desiredFloor) { while (currentFloor != desiredFloor){ if (currentFloor < desiredFloor){ goUp(); } else { goDown(); } } } public int getFloor() { return currentFloor; } public boolean checkDoorStatus() { return doorOpen; } }