Introduction

Of all the options panes, the easiest option pane to create is a message pane. And Confirm pane is slightly different from the message option pane. This type of pane is used to request a decision from the user.

Message Pane

A message pane is a pane that displays a message to the user with an icon based on the message type.

Methods Used

Note. All the above methods will not return any value.

The source code below shows the creation of an informational message pane. 

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.lang.*;
public class messagePane extends JPanel implements ActionListener {
    public messagePane() {
        JButton b1 = new JButton("Click Here");
        b1.addActionListener(this);
        add(b1);
    }
    public void actionPerformed(ActionEvent e) {
        JOptionPane.showMessageDialog(this, "Hii, Look at my Message Dialog-- By Ashish Bhatnagar", "Informational Message Pane", JOptionPane.INFORMATION_MESSAGE);
    }
    public Dimension getPrefferedSize() {
        return new Dimension(100, 60);
    }
    public static void main(String args[]) {
        JFrame frame = new JFrame("Info");
        messagePane panel = new messagePane();
        frame.setForeground(Color.black);
        frame.setBackground(Color.lightGray);
        frame.addWindowListener(new WindowCloser());
        frame.getContentPane().add(panel, "Center");
        frame.setSize(panel.getPreferredSize());
        frame.setVisible(true);
    }
}
class WindowCloser extends WindowAdapter {
    public void windowClosing(WindowEvent e) {
        Window win = e.getWindow();
        win.setVisible(false);
        System.exit(0);
    }
}

Output

Message Pane code output

In the same way, we can create the remaining message panes. Replace the following code fragments in the above program at the appropriate place to get the appropriate message dialogs.

Confirm Panes

The confirm pane is slightly different from the message pane. This type of pane is used to request a decision from the user. For example, the user may want a confirmation panel that asks if the work has to be saved before the application quits. Based on the option type, the decision can be yes/no or yes/no/cancel. The methods for showing a confirm-style option pane as shown below. All these methods return an "int" to indicate the user's choice.

The methods showing a confirm dialog each return an integer with code representing the user's action on that dialog. This integer has one of six values, depending on the user's action. These values are defined as class variables on JOptionPane.

The below code displays a confirm dialog when the user presses the "Click here" button. The results are printed to the console when the user presses the appropriate button.

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.lang.*;
public class Confirm extends JPanel implements ActionListener {
  public Confirm() {
    JButton b1 = new JButton("Click here");
    b1.addActionListener(this);
    add(b1);
  }
  public void actionPerformed(ActionEvent e) {
    int result;
    result = JOptionPane.showConfirmDialog(this, "Continue?");
    switch (result) {
    case JOptionPane.YES_OPTION:
      System.out.println("Yes Button was Pressed");
      break;

    case JOptionPane.NO_OPTION:
      System.out.println("No Button was Pressed");
      break;

    case JOptionPane.CANCEL_OPTION:
      System.out.println("Cancel Button was Pressed");
      break;

    case JOptionPane.CLOSED_OPTION:
      System.out.println("Dialog Closed");
      break;

    }
  }
  public Dimension getPreferredSize() {
    return new Dimension(100, 60);
  }
  public static void main(String args[]) {
    JFrame frame = new JFrame("Confirm Dialog");
    Confirm panel = new Confirm();
    frame.setForeground(Color.black);
    frame.setBackground(Color.lightGray);
    frame.addWindowListener(new WindowCloser());
    frame.getContentPane().add(panel, "Center");
    frame.setSize(panel.getPreferredSize());
    frame.setVisible(true);
  }
}
class WindowCloser extends WindowAdapter {
  public void windowClosing(WindowEvent e) {
    Window win = e.getWindow();
    win.setVisible(false);
    System.exit(0);
  }
}

Output

Confirm Panes output image

Summary

A message pane is a pane that displays a message to the user with an icon based on the message type. Confirm pane is slightly different from the message option pane. This type of pane is used to request a decision from the user.