///////////////////////////////////////////////////////////////////////////
//
// Pro24301 Write a program that simulates the Jeopardy contestant
// push buttons. This program is to have three player
// views and one Alex view. The players views must keep the
// name of the player local as an identification mechanism.
// The players view will have one button and the name of the
// player. The Alex view will be one text area to display the
// winner, for that question, and a reset button.
//
// The model is to contain a String name instance variable and
// a boolean buzzed instance variable. The name holds the name
// of the player the pressed the buzzer and the boolean variable
// holds the buzzer state. Alex's view resets the buzzed to
// false. The first players buzzers sets the buzzed variable
// to true and places there name as the winnning buzzard.
//
//
// +--------------+ +--------------+ +--------------+
// | _ = X | | _ = X | | _ = X |
// +--------------+ +--------------+ +--------------+
// | | | | | |
// | Player One | | Player Two | | Player Three |
// | | | | | |
// | +--------+ | | +--------+ | | +--------+ |
// | | Buzzer | | | | Buzzer | | | | Buzzer | |
// | +--------+ | | +--------+ | | +--------+ |
// +--------------+ +--------------+ +--------------+
//
//
// +-------------------+
// | _ = X |
// +-------------------+
// | |
// | Alex |
// | +---------------+ |
// | | Player three | |
// | | | |
// | +---------------+ |
// | |
// | +---------+ |
// | | Reset | |
// | +---------+ |
// +-------------------+
//
//
//
//
///////////////////////////////////////////////////////////////////////////
//
//
//
//
//
package Buzzer;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class Pro24301 {
public static void main(String[] args) {
new Controller();
}}
class Controller extends JPanel
{
GUIView viewA;
GUIView viewB;
GUIView viewC;
GUIViewB alex;
Model model;
public Controller()
{
viewA = new GUIView("Player One");
viewB = new GUIView("Player Two");
viewC = new GUIView("Player Three");
alex = new GUIViewB();
model = new Model();
model.addObserver( viewA );
model.addObserver( viewB );
model.addObserver( viewC );
model.addObserver( alex );
viewA.setController(new ButtonController1());
viewB.setController(new ButtonController2());
viewC.setController(new ButtonController3());
alex.setController(new ResetController());
}
class ButtonController1 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
if(model.buzzed == false)
model.buzz(viewA.theName);
model.sendNotification();
}
}
class ButtonController2 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
if(model.buzzed == false)
model.buzz(viewB.theName);
model.sendNotification();
}
}
class ButtonController3 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
if(model.buzzed == false)
model.buzz(viewC.theName);
model.sendNotification();
}
}
class ResetController implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
model.reset();
model.sendNotification();
}
}
}
class GUIView extends JFrame implements Observer
{
private JButton buzz;
private JLabel name;
protected String theName;
public GUIView(String name)
{
setSize(200,100);
theName = name;
setLayout( new FlowLayout() );
{
this.name = new JLabel( name );
add( this.name );
buzz = new JButton("Buzz In");
add( buzz );
}
setLocation(new Random().nextInt(300)+100,
new Random().nextInt(300)+100);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setFocusable(true);
setVisible(true);
}
public String getName()
{
return theName;
}
public void update(Observable obs, Object x){}
public void setController(ActionListener listener)
{
buzz.addActionListener(listener);
}
}
class GUIViewB extends JFrame implements Observer
{
private JButton reset;
private JLabel name;
private JTextField field;
public GUIViewB()
{
setSize(200,100);
setLayout( new FlowLayout() );
{
this.name = new JLabel( "Alex");
add( name );
field = new JTextField(10);
add( field );
reset = new JButton("Reset");
add( reset );
}
setLocation(new Random().nextInt(300)+100,
new Random().nextInt(300)+100);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setFocusable(true);
setVisible(true);
}
public void update(Observable obs, Object x)
{
field.setText(((Model)obs).name);
}
public void setController(ActionListener listener)
{
reset.addActionListener(listener);
}
}
class Model extends Observable
{
protected boolean buzzed;
protected String name;
public void reset()
{
buzzed = false;
name = "";
}
public void buzz(String aName)
{
buzzed = true;
name = aName;
}
public void sendNotification()
{
setChanged();
notifyObservers();
}
}
Pastie
