securitypanel.java

来自「32个java程序源代码」· Java 代码 · 共 404 行

// Tutorial 11: SecurityPanel.java
// Enable user to enter security codes specifying access privileges.
import java.awt.*;
import java.awt.event.*;
import java.text.DateFormat;
import java.util.Date;
import javax.swing.*;

public class SecurityPanel extends JFrame
{
   // JLabel and JPasswordField for user to input security code
   private JLabel securityCodeJLabel;
   private JPasswordField securityCodeJPasswordField;

   // JButtons to represent security keypad
   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 clearJButton;
   private JButton zeroJButton;
   private JButton enterJButton;

   // JLabel, JTextArea and JScrollPane to display access log
   private JLabel accessLogJLabel;
   private JTextArea accessLogJTextArea;
   private JScrollPane accessLogJScrollPane;

   // no-argument constructor
   public SecurityPanel()
   {
      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 securityCodeJLabel
      securityCodeJLabel = new JLabel();
      securityCodeJLabel.setBounds( 16, 16, 90, 21 );
      securityCodeJLabel.setText( "Security code:" );
      contentPane.add( securityCodeJLabel );

      // set up securityCodeJPasswordField
      securityCodeJPasswordField = new JPasswordField();
      contentPane.add( securityCodeJPasswordField );

      // set up oneJButton
      oneJButton = new JButton();
      oneJButton.setBounds( 80, 64, 50, 50 );
      oneJButton.setText( "1" );
      contentPane.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( 130, 64, 50, 50 );
      twoJButton.setText( "2" );
      contentPane.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( 180, 64, 50, 50 );
      threeJButton.setText( "3" );
      contentPane.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( 80, 114, 50, 50 );
      fourJButton.setText( "4" );
      contentPane.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( 130, 114, 50, 50 );
      fiveJButton.setText( "5" );
      contentPane.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( 180, 114, 50, 50 );
      sixJButton.setText( "6" );
      contentPane.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( 80, 164, 50, 50 );
      sevenJButton.setText( "7" );
      contentPane.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( 130, 164, 50, 50 );
      eightJButton.setText( "8" );
      contentPane.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( 180, 164, 50, 50 );
      nineJButton.setText( "9" );
      contentPane.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 clearJButton
      clearJButton = new JButton();
      clearJButton.setBounds( 80, 214, 50, 50 );
      clearJButton.setText( "C" );
      contentPane.add( clearJButton );
      clearJButton.addActionListener(

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

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up zeroJButton
      zeroJButton = new JButton();
      zeroJButton.setBounds( 130, 214, 50, 50 );
      zeroJButton.setText( "0" );
      contentPane.add( zeroJButton );
      zeroJButton.addActionListener(

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

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up enterJButton
      enterJButton = new JButton();
      enterJButton.setBounds( 180, 214, 50, 50 );
      enterJButton.setText( "#" );
      contentPane.add( enterJButton );
      enterJButton.addActionListener(

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

         } // end anonymous inner class

      ); // end call to addActionListener

      // set up accessLogJLabel
      accessLogJLabel = new JLabel();
      accessLogJLabel.setBounds( 16, 285, 100, 16 );
      accessLogJLabel.setText( "Access log:" );
      contentPane.add( accessLogJLabel );

      // set up accessLogJTextArea
      accessLogJTextArea = new JTextArea();

      // set up accessLogJScrollPane
      accessLogJScrollPane = new JScrollPane( accessLogJTextArea );
      accessLogJScrollPane.setBounds( 16, 309, 270, 95 );
      contentPane.add( accessLogJScrollPane );

      // set properties of application's window
      setTitle( "Security Panel" ); // set window's title
      setSize( 310, 450 );          // set window's size
      setVisible( true );           // display window

   } // end method createUserInterface

   // append 1 to the security code
   private void oneJButtonActionPerformed( ActionEvent event )
   {

   } // end method oneJButtonActionPerformed

   // append 2 to the security code
   private void twoJButtonActionPerformed( ActionEvent event )
   {

   } // end method twoJButtonActionPerformed

   // append 3 to the security code
   private void threeJButtonActionPerformed( ActionEvent event )
   {

   } // end method threeJButtonActionPerformed

   // append 4 to the security code
   private void fourJButtonActionPerformed( ActionEvent event )
   {

   } // end method fourJButtonActionPerformed

   // append 5 to the security code
   private void fiveJButtonActionPerformed( ActionEvent event )
   {

   } // end method fiveJButtonActionPerformed

   // append 6 to the security code
   private void sixJButtonActionPerformed( ActionEvent event )
   {

   } // end method sixJButtonActionPerformed

   // append 7 to the security code
   private void sevenJButtonActionPerformed( ActionEvent event )
   {

   } // end method sevenJButtonActionPerformed

   // append 8 to the security code
   private void eightJButtonActionPerformed( ActionEvent event )
   {

   } // end method eightJButtonActionPerformed

   // append 9 to the security code
   private void nineJButtonActionPerformed( ActionEvent event )
   {

   } // end method nineJButtonActionPerformed
   
   // append 0 to the security code
   private void zeroJButtonActionPerformed( ActionEvent event )
   {

   } // end method zeroJButtonActionPerformed

   // clears the securityCodeJPasswordField
   private void clearJButtonActionPerformed( ActionEvent event )
   {

   } // end method clearJButtonActionPerformed

   // gets access code and determines level of clearance
   private void enterJButtonActionPerformed( ActionEvent event )
   {

   } // end method enterJButtonActionPerformed
   
   // main method
   public static void main( String[] args )
   {
      SecurityPanel application = new SecurityPanel();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );

   } // end method main

} // end class SecurityPanel

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