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


      public class OptionPane extends JFrame {    // inherit JFrame

      private JButton button1 = new JButton("Confirm");   // declare and create a button
      private JButton button2 = new JButton("Input");   // declare and create a button
      private JButton button3 = new JButton("Message");   // declare and create a button
      private JButton button4 = new JButton("Options");   // declare and create a button
      private JButton button5 = new JButton("FileDialog");   // declare and create a button
      private JButton button6 = new JButton("FileChooser");   // declare and create a button


      /**
       * Constructor sets up the window and creates a toolbar
       */
        public OptionPane() {
      //
      // setup the frames banner/title bar
      //
           super("My Frame");  // call JFrame's constructor and give it a title
           setSize(300,200);  // set the width of the window to 300 pixels, height to 200.
      //     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // exit the whole program when this frame is closed
       addWindowListener(new WindowAdapter() {      // Quit the application
	              public void windowClosing(WindowEvent e) {
	                  System.exit(0);
	              }
        });
      //
      // change to a grid layout manager
      //
           getContentPane().setLayout(new GridLayout(6,1));
      //
      // Add the buttons to the frame's content pane, for each button, create a
      // separate inner class object as a listener and tell the button about it.
      //
         getContentPane().add(button1);   // add button 1
         button1.addActionListener(new ConfirmListener());  // create its listener and tell it

         getContentPane().add(button2);
         button2.addActionListener(new InputListener());

         getContentPane().add(button3);
         button3.addActionListener(new MessageListener());

         getContentPane().add(button4);
         button4.addActionListener(new OptionListener());

         getContentPane().add(button5);
         button5.addActionListener(new FileDialogListener());

         getContentPane().add(button6);
         button6.addActionListener(new FileChooserListener());
        }
 /**
  * Inner class to handle button 1
  */
   class ConfirmListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {
          int answer;
          answer = JOptionPane.showConfirmDialog(OptionPane.this, "Do you like java?",
                       "Dialog Confirm Example",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE);
          switch(answer){
           case JOptionPane.YES_OPTION :
                    OptionPane.this.setTitle("Yes was pressed");
                    break;
           case JOptionPane.NO_OPTION :
                    OptionPane.this.setTitle("No was pressed");
                    break;
           case JOptionPane.CANCEL_OPTION :
                   OptionPane.this.setTitle("Cancel was pressed");
                    break;
          }// end switch
        }
    }
 /**
  * Inner class to handle button 2
  */
   class InputListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {
          String answer;
          answer = JOptionPane.showInputDialog(OptionPane.this, "What is your quest?",
                     "Dialog Input Example",JOptionPane.QUESTION_MESSAGE);
          if(answer != null)
            OptionPane.this.setTitle(answer);
          else
            OptionPane.this.setTitle("Cancel was pressed");
      }
    }
 /**
  * Inner class to handle button 3
  */
   class MessageListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {
         JOptionPane.showMessageDialog(OptionPane.this,"You are the Weakest Link!",
         "Oops",JOptionPane.ERROR_MESSAGE);  // popup an error message
      }
    }

/**
  * Inner class to handle button 4
  */
   class OptionListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {
         String[] excuses = {"My dog ate it","Homework? What Homework?","Oh whateveeer"};

         int response = JOptionPane.showOptionDialog(OptionPane.this,"What is your excuse?",
         "Where's your homework?",0,JOptionPane.QUESTION_MESSAGE, null,excuses, excuses[0]);

         if(response >= 0 && response < excuses.length)
            OptionPane.this.setTitle(excuses[response]);
      }
    }

/**
  * Inner class to handle button 5
  */
   class FileDialogListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {

       FileDialog dialog = new FileDialog(OptionPane.this, "Open",FileDialog.LOAD);  // create a filedialog object for reading
       dialog.setVisible(true);      // set the dialog to be visible
       if(dialog.getFile() == null)   // get the file name selected, if its null then no file was selected, just exit
          OptionPane.this.setTitle("No file selected");
       else
          OptionPane.this.setTitle(dialog.getDirectory()+dialog.getFile());

      }
    }
/**
  * Inner class to handle button 6
  */
   class FileChooserListener implements ActionListener{
      public void actionPerformed(ActionEvent event)  {

       JFileChooser dialog = new JFileChooser();  // create the chooser object
       int result = dialog.showOpenDialog(OptionPane.this); // use Open (as opposed to save)
       if(result == JFileChooser.APPROVE_OPTION) {
          String filename = dialog.getSelectedFile().getPath();
          OptionPane.this.setTitle(filename); // display file name in banner
        }
        else
         OptionPane.this.setTitle("Cancel was pressed");

      }
    }
      /***********************************************************************
       *
       *  Main routine, Note, this routine can be in any class.
       */
        public static void main(String[] arguments){

          OptionPane fr = new OptionPane();  // create the frame
          fr.setVisible(true);         // allow it to be seen

        }
 }