Task:

Implement CRC classes in Java (CRC classes are: beeper, button, cancelbutton, cookbutton, door, light, microwave, mytimer(code included below),oven, powertube). Of course this program is just a simulator it doesnt actually cook. But does the following:

1. As text output when the door is opened display a message Door is open

2. When the door is closed display a message "Door is closed"

3. When the cook button is pressed display

a. Light is on

b. Added 1 minute of cook time

c. Power tube is on...

d. Beep!

4. Start a countdown from 60 seconds and display the time

5. If the door is open and the cook button pressed just beep and do nothing else

6. Use d to toggle the door open and closed

7. Use p to press the cook button

8. When cooking is done (timer reached zero) display

a. Light is off

b. Beep!

c. Beep!

d. Beep!

9. If p is pressed while the oven is running, add 60 seconds to cook time. The number of seconds remaining should be equal to 60 plus whatever amount of time was at the point of pressing p

10. If c is pressed while the oven is running, turn off the light, the power tube, zero the timer and beep. If not running just beep. Display

a. Light is off

b. Beep!

c. Cooking cancelled by pressing Cancel

11. If 'd' is pressed while oven is running, turn off the light, the power tube, zero the timer and beep. If not running just beep. Display

a. Cooking cancelled by opening door

b. Light is on

Since the oven has no display the messages printed in the simulator are for our reference only. The oven would not actually display anything but we could certainly see the light and hear the beeper the power tube.

MyTimer Code:

package microwave;

import java.util.Timer;

import java.util.TimerTask;

public class MyTimer {

private int time; //as seconds

private boolean isrunning;

Timer t;

Oven oven;

public MyTimer(Oven oven){

isrunning = false;

time = 0;

this.oven = oven;

}

public void Add1Minute(){

if(isrunning) return;

t= new Timer();

time = 60;

isrunning = true;

System.out.println("Added 1 minute of cook time");

StartTimer();

public void AddExtraMinute(){

time = time + 60;

System.out.println("Added 1 minute of cook time");

}

private void StartTimer(){

t.scheduleAtFixedRate(new TimerTask(){

public void run(){

System.out.println(time);

time--;

if(time == 0){

Alert();

t.cancel();

}

}

}, 0, 1000); //TimerTask, startAtOnce, Milliseconds

}

private void Alert(){

oven.TimerExpired();

isrunning = false;

}

boolean isRunning(){

return isrunning;

}

public void Cancel(){

t.cancel();

time=0;

isrunning = false;

}

}