Solutions - Design Patterns Java - page 337

State (Chapter 22)
SOLUTION 22.1
As the state machine shows, when the door is open, a click will take the door to
the StayOpen state, and a second click will start the door closing.
SOLUTION 22.2
Your code should look something like:
public void complete()
{
if (state == OPENING)
{
setState(OPEN);
}
else if (state == CLOSING)
{
setState(CLOSED);
}
}
public void timeout()
{
setState(CLOSING);
}
SOLUTION 22.3
The code for status() relies on the state's class name and will report, for example,
the status of an open door as "DoorOpen" , instead of "Open" . You can, of course, trim off
the "Door" prefix, if you like.
SOLUTION 22.4
Your code should look something like:
package com.oozinoz.carousel;
public class DoorClosing extends DoorState
{
public DoorClosing(Door_2 door)
{
super(door);
}
public void click()
{
door.setState(door.OPENING);
}