Question

Olype here to search 10-33 PM 6/201R

Add a timer to the lightbulb ON/OFF program such that the bulb stays on for 10 seconds after the ON button is pushed and then goes off.   Put a new label on the lightbulb panel that counts the number of seconds the bulb is on and displays the number of seconds as it counts up from 0 to 10. THIS IS A JAVA PROGRAM. The image above is what it should look like.

// Demonstrates mnemonics and tool tips.
//********************************************************************

import javax.swing.*;
import java.awt.*;

public class LightBulb
{
   //-----------------------------------------------------------------
   // Sets up a frame that displays a light bulb image that can be
   // turned on and off.
   //-----------------------------------------------------------------
   public static void main(String[] args)
   {
      JFrame frame = new JFrame("Light Bulb");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      LightBulbPanel bulb = new LightBulbPanel();
      LightBulbControls controls = new LightBulbControls(bulb);

      JPanel panel = new JPanel();
      panel.setBackground(Color.black);
      panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
      panel.add(Box.createRigidArea(new Dimension(0, 20)));
      panel.add(bulb);
      panel.add(Box.createRigidArea(new Dimension(0, 10)));
      panel.add(controls);
      panel.add(Box.createRigidArea(new Dimension(0, 10)));

      frame.getContentPane().add(panel);
      frame.pack();
      frame.setVisible(true);
   }
}

// Represents the control panel for the LightBulb program.
//********************************************************************

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class LightBulbControls extends JPanel
{
   private LightBulbPanel bulb;
   private JButton onButton, offButton;

   //-----------------------------------------------------------------
   // Sets up the lightbulb control panel.
   //-----------------------------------------------------------------
   public LightBulbControls(LightBulbPanel bulbPanel)
   {
      bulb = bulbPanel;

      onButton = new JButton("On");
      onButton.setEnabled(false);
      onButton.setMnemonic('n');
      onButton.setToolTipText("Turn it on!");
      onButton.addActionListener(new OnListener());

      offButton = new JButton("Off");
      offButton.setEnabled(true);
      offButton.setMnemonic('f');
      offButton.setToolTipText("Turn it off!");
      offButton.addActionListener(new OffListener());

      setBackground(Color.black);
      add(onButton);
      add(offButton);
   }

   //*****************************************************************
   // Represents the listener for the On button.
   //*****************************************************************
   private class OnListener implements ActionListener
   {
      //--------------------------------------------------------------
      // Turns the bulb on and repaints the bulb panel.
      //--------------------------------------------------------------
      public void actionPerformed(ActionEvent event)
      {
         bulb.setOn(true);
         onButton.setEnabled(false);
         offButton.setEnabled(true);
         bulb.repaint();
      }
   }

   //*****************************************************************
   // Represents the listener for the Off button.
   //*****************************************************************
   private class OffListener implements ActionListener
   {
      //--------------------------------------------------------------
      // Turns the bulb off and repaints the bulb panel.
      //--------------------------------------------------------------
      public void actionPerformed(ActionEvent event)
      {
         bulb.setOn(false);
         onButton.setEnabled(true);
         offButton.setEnabled(false);
         bulb.repaint();
      }
   }
}

// Represents the image for the LightBulb program.
//********************************************************************

import javax.swing.*;
import java.awt.*;

public class LightBulbPanel extends JPanel
{
   private boolean on;
   private ImageIcon lightOn, lightOff;
   private JLabel imageLabel;

   //-----------------------------------------------------------------
   // Constructor: Sets up the images and the initial state.
   //-----------------------------------------------------------------
   public LightBulbPanel()
   {
      lightOn = new ImageIcon("lightBulbOn.gif");
      lightOff = new ImageIcon("lightBulbOff.gif");

      setBackground(Color.black);

      on = true;
      imageLabel = new JLabel(lightOff);
      add(imageLabel);
   }

   //-----------------------------------------------------------------
   // Paints the panel using the appropriate image.
   //-----------------------------------------------------------------
   public void paintComponent(Graphics page)
   {
      super.paintComponent(page);

      if (on)
         imageLabel.setIcon(lightOn);
      else
         imageLabel.setIcon(lightOff);
   }

   //-----------------------------------------------------------------
   // Sets the status of the light bulb.
   //-----------------------------------------------------------------
   public void setOn(boolean lightBulbOn)
   {
      on = lightBulbOn;
   }
}

Answer 1

//LightBulbControls.java

//Represents the control panel for the LightBulb program.
//********************************************************************

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class LightBulbControls extends JPanel {
   private LightBulbPanel bulb;
   private JButton onButton, offButton;
   private Timer timer;
   private int seconds;

   // -----------------------------------------------------------------
   // Sets up the lightbulb control panel.
   // -----------------------------------------------------------------
   public LightBulbControls(LightBulbPanel bulbPanel) {
       bulb = bulbPanel;

       onButton = new JButton("On");
       onButton.setEnabled(false);
       onButton.setMnemonic('n');
       onButton.setToolTipText("Turn it on!");
       onButton.addActionListener(new OnListener());

       offButton = new JButton("Off");
       offButton.setEnabled(true);
       offButton.setMnemonic('f');
       offButton.setToolTipText("Turn it off!");
       offButton.addActionListener(new OffListener());

       seconds = 0;
       timer = new Timer(1000, new ActionListener() {
           @Override
           public void actionPerformed(ActionEvent e) {
               if (seconds < 10) {
                   bulb.setSecond("" + seconds);
                   seconds += 1;
               } else
                   offButton.doClick();
           }
       });

       setBackground(Color.black);
       add(onButton);
       add(offButton);
       timer.start();
   }

   // *****************************************************************
   // Represents the listener for the On button.
   // *****************************************************************
   private class OnListener implements ActionListener {
       // --------------------------------------------------------------
       // Turns the bulb on and repaints the bulb panel.
       // --------------------------------------------------------------
       public void actionPerformed(ActionEvent event) {
           bulb.setOn(true);
           onButton.setEnabled(false);
           offButton.setEnabled(true);
           bulb.repaint();
           timer.start();
       }
   }

   // *****************************************************************
   // Represents the listener for the Off button.
   // *****************************************************************
   private class OffListener implements ActionListener {
       // --------------------------------------------------------------
       // Turns the bulb off and repaints the bulb panel.
       // --------------------------------------------------------------
       public void actionPerformed(ActionEvent event) {
           bulb.setOn(false);
           onButton.setEnabled(true);
           offButton.setEnabled(false);
           bulb.repaint();
           timer.stop();
           bulb.setSecond(" ");
           seconds = 0;
       }
   }
}

//LightBulbPanel.java

//Represents the image for the LightBulb program.
//********************************************************************

import javax.swing.*;
import java.awt.*;

public class LightBulbPanel extends JPanel {
   private boolean on;
   private ImageIcon lightOn, lightOff;
   private JLabel imageLabel;
   private JLabel secondsLabel;

   // -----------------------------------------------------------------
   // Constructor: Sets up the images and the initial state.
   // -----------------------------------------------------------------
   public LightBulbPanel() {
       lightOn = new ImageIcon("lightBulbOn.gif");
       lightOff = new ImageIcon("lightBulbOff.gif");

       setBackground(Color.black);

       on = true;
       imageLabel = new JLabel(lightOff);
       add(imageLabel);

       secondsLabel = new JLabel(" ");
       secondsLabel.setForeground(Color.WHITE);
       add(secondsLabel);
   }

   // -----------------------------------------------------------------
   // Paints the panel using the appropriate image.
   // -----------------------------------------------------------------
   public void paintComponent(Graphics page) {
       super.paintComponent(page);

       if (on)
           imageLabel.setIcon(lightOn);
       else
           imageLabel.setIcon(lightOff);
   }

   // -----------------------------------------------------------------
   // Sets the status of the light bulb.
   // -----------------------------------------------------------------
   public void setOn(boolean lightBulbOn) {
       on = lightBulbOn;
   }

   // -----------------------------------------------------------------
   // Sets the number of seconds the bulb is on
   // -----------------------------------------------------------------
   public void setSecond(String seconds) {
       secondsLabel.setText(seconds);
   }
}

//LightBulb.java

import javax.swing.*;
import java.awt.*;

public class LightBulb {
   // -----------------------------------------------------------------
   // Sets up a frame that displays a light bulb image that can be
   // turned on and off.
   // -----------------------------------------------------------------
   public static void main(String[] args) {
       JFrame frame = new JFrame("Light Bulb");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

       LightBulbPanel bulb = new LightBulbPanel();
       LightBulbControls controls = new LightBulbControls(bulb);

       JPanel panel = new JPanel();
       panel.setBackground(Color.black);
       panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
       panel.add(Box.createRigidArea(new Dimension(0, 20)));
       panel.add(bulb);
       panel.add(Box.createRigidArea(new Dimension(0, 10)));
       panel.add(controls);
       panel.add(Box.createRigidArea(new Dimension(0, 10)));

       frame.getContentPane().add(panel);
       frame.pack();
       frame.setVisible(true);
   }
}

SAMPLE OUTPUT:

Lignt Bulb 0