Solved

Define a JFrame subclass that has four vertically positioned buttons. The labels for the four buttons are Senior, Junior, Sophomore, and Freshman.

Posted on 2010-08-30
10
470 Views
Last Modified: 2012-05-10
I need to define a JFrame subclass that has four vertically positioned buttons. The labels for the four buttons are Senior, Junior, Sophomore, and Freshman. When a button is clicked, display a message that identifies which button is clicked, using JOptionPane. I do not know where to begin on this.
0
Comment
Question by:Rowley4
  • 5
  • 4
10 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 33557986
Use a JPanel with a BoxLayout. Add it to the JOptionPane

http://download.oracle.com/javase/tutorial/uiswing/layout/box.html
0
 
LVL 26

Expert Comment

by:ksivananth
ID: 33558312
Use BorderLayout, which is the default for JFrame, check this example http://www.roseindia.net/java/example/java/awt/borderlayout-example-in-java.shtml
0
 

Author Comment

by:Rowley4
ID: 33558672
Awesome link, very helpful!

So if this is my code, and I want to add a different content to each button when the button is pushed how would I do that?

import java.awt.Component;
import java.awt.Container;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;

public class BoxLayoutDemo {
    public static void addComponentsToPane(Container pane) {
        pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));

        addAButton("Freshman", pane);
        addAButton("Sophomore", pane);
        addAButton("Junior", pane);
        addAButton("Senior", pane);
    }

    private static void addAButton(String text, Container container) {
        JButton button = new JButton(text);
        button.setAlignmentX(Component.CENTER_ALIGNMENT);
        container.add(button);
    }

    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("BoxLayoutDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Set up the content pane.
        addComponentsToPane(frame.getContentPane());

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

0
Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

 
LVL 86

Expert Comment

by:CEHJ
ID: 33559649
>>add a different content to each button when the button is pushed

What sort of thing did you have in mind?
0
 

Author Comment

by:Rowley4
ID: 33560203
Something very simple like Freshman: First year of school. Sophomore: Second year of school. Junior: Third year of school. Senior: Forth and final year of school.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 33560220
Shown where though?
0
 

Author Comment

by:Rowley4
ID: 33560311
No specifications. Where/however would be the easiest.  A new window??
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 33560372
Try something like
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.AbstractAction;
import javax.swing.JFrame;

public class BoxLayoutDemo {
    public static void addComponentsToPane(Container pane) {
        pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));

        addAButton("Freshman", "A freshman is...", pane);
        addAButton("Sophomore", "A sophomore is...", pane);
        addAButton("Junior", "A junior is...", pane);
        addAButton("Senior", "A senior is...", pane);
    }

    private static void addAButton(String text, String studentInfo, Container container) {
        JButton button = new JButton(new StudentAction(text, studentInfo));
        button.setAlignmentX(Component.CENTER_ALIGNMENT);
        container.add(button);
    }

    private static class StudentAction extends AbstractAction {
	private String studentInfo;

	public StudentAction(String buttonCaption, String studentInfo) {
	    super(buttonCaption);
	    this.studentInfo = studentInfo;
	}

	public void actionPerformed(ActionEvent e) {
	    JOptionPane.showMessageDialog(null, studentInfo);
	}
    }

    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("BoxLayoutDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Set up the content pane.
        addComponentsToPane(frame.getContentPane());

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

Open in new window

0
 

Author Comment

by:Rowley4
ID: 33560873
Absolutely perfect! You are phenomenal. Thank you so much!
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 33561307
:)
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question