Class Sequencer

java.lang.Object
  |
  +--Sequencer

public class Sequencer

extends Object

A Sequencer controls a TrafficLight. It maintains fields for the light itself and the current state of the light. Each time it receives a "next" message, it advances to the next state and sends the light an appropriate message.

Version:

1

Constructor Summary

Sequencer(TrafficLight light)
Construct a sequencer to control a TrafficLight.

Method Summary

void	next() How the light changes when a next Button is pressed depends on the current state.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Sequencer

public Sequencer(TrafficLight light)

Construct a sequencer to control a TrafficLight.

Parameters:

light - the TrafficLight we wish to control.

Method Detail

next

public void next()

How the light changes when a next Button is pressed depends on the current state. The sequence is GO -> CAUTION -> STOP -> GO.