microwaveoven.java

微波炉模拟应用程序,创建属于自己的类及其对象!

// Tutorial 18: MicrowaveOven.java
// Mimics the behavior of a microwave oven.
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
import javax.swing.*;
import javax.swing.border.*;

public class MicrowaveOven extends JFrame
{
   // JPanel for microwave window
   private JPanel windowJPanel;

   // JPanel for microwave controls
   private JPanel controlJPanel;

   // JTextField for cooking time
   private JTextField displayJTextField;

   // JButtons to set cooking time
   private JButton oneJButton;
   private JButton twoJButton;
   private JButton threeJButton;
   private JButton fourJButton;
   private JButton fiveJButton;
   private JButton sixJButton;
   private JButton sevenJButton;
   private JButton eightJButton;
   private JButton nineJButton;
   private JButton zeroJButton;

   // JButtons to start and clear timer
   private JButton startJButton;
   private JButton clearJButton;

   // Timer to count down seconds
   private Timer clockTimer;

   // String for storing digits entered by user
   private String timeToDisplay = "";

   // Time instance for storing the current time
   private CookingTime microwaveTime = new CookingTime( 0, 0 );

   // DecimalFormat to format time output
   private DecimalFormat timeFormat = new DecimalFormat( "00" );

   // no-argument constructor
   public MicrowaveOven() 
   {
      createUserInterface();
   }
   
   // create and position GUI components; register event handlers
   private void createUserInterface()
   {
      // get content pane for attaching GUI components
      Container contentPane = getContentPane();

      // enable explicit positioning of GUI components
      contentPane.setLayout( null );
      
      // set up windowJPanel
      windowJPanel = new JPanel();
      windowJPanel.setBounds( 16, 16, 328, 205 );
      windowJPanel.setBorder( new LineBorder( Color.BLACK ) );
      contentPane.add( windowJPanel );
      
      // set up controlJPanel
      controlJPanel = new JPanel();
      controlJPanel.setBounds( 368, 16, 149, 205 );
      controlJPanel.setBorder( new LineBorder( Color.BLACK ) );
      controlJPanel.setLayout( null );
      contentPane.add( controlJPanel );
      
      // set up displayJTextField
      displayJTextField = new JTextField();
      displayJTextField.setBounds( 7, 5, 135, 42 );
      displayJTextField.setText( "Microwave Oven" );
      displayJTextField.setHorizontalAlignment( JTextField.CENTER );
      displayJTextField.setEditable( false );
      controlJPanel.add( displayJTextField );

      // set up oneJButton
      oneJButton = new JButton();
      oneJButton.setBounds( 13, 59, 41, 24 );
      oneJButton.setText( "1" );
      controlJPanel.add( oneJButton );
      oneJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when oneJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               oneJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener
      
      // set up twoJButton
      twoJButton = new JButton();
      twoJButton.setBounds( 54, 59, 41, 24 );
      twoJButton.setText( "2" );
      controlJPanel.add( twoJButton );
      twoJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when twoJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               twoJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up threeJButton
      threeJButton = new JButton();
      threeJButton.setBounds( 95, 59, 41, 24 );
      threeJButton.setText( "3" );
      controlJPanel.add( threeJButton );
      threeJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when threeJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               threeJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up fourJButton
      fourJButton = new JButton();
      fourJButton.setBounds( 13, 83, 41, 24 );
      fourJButton.setText( "4" );
      controlJPanel.add( fourJButton );
      fourJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when fourJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               fourJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up fiveJButton
      fiveJButton = new JButton();
      fiveJButton.setBounds( 54, 83, 41, 24 );
      fiveJButton.setText( "5" );
      controlJPanel.add( fiveJButton );
      fiveJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when fiveJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               fiveJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up sixJButton
      sixJButton = new JButton();
      sixJButton.setBounds( 95, 83, 41, 24 );
      sixJButton.setText( "6" );
      controlJPanel.add( sixJButton );
      sixJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when sixJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               sixJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up sevenJButton
      sevenJButton = new JButton();
      sevenJButton.setBounds( 13, 107, 41, 24 );
      sevenJButton.setText( "7" );
      controlJPanel.add( sevenJButton );
      sevenJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when sevenJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               sevenJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up eightJButton
      eightJButton = new JButton();
      eightJButton.setBounds( 54, 107, 41, 24 );
      eightJButton.setText( "8" );
      controlJPanel.add( eightJButton );
      eightJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when eightJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               eightJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up nineJButton
      nineJButton = new JButton();
      nineJButton.setBounds( 95, 107, 41, 24 );
      nineJButton.setText( "9" );
      controlJPanel.add( nineJButton );
      nineJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when nineJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               nineJButtonActionPerformed( event );
            }

         } // end anonymous inner class

      ); // end call to addActionListener
      
      // set up zeroJButton
      zeroJButton = new JButton();
      zeroJButton.setBounds( 54, 131, 41, 24 );
      zeroJButton.setText( "0" );
      controlJPanel.add( zeroJButton );
      zeroJButton.addActionListener(

         new ActionListener() // anonymous inner class
         {
            // event handler called when zeroJButton is pressed
            public void actionPerformed( ActionEvent event )
            {
               zeroJButtonActionPerformed( event );