Solved

Simple swing application

Posted on 2007-11-19
2
201 Views
Last Modified: 2008-02-01
I've been challenged to figure out what's wrong with this application. It seems to run as intended.

So far, I've came up with the following:

1) The EventDispatchThread is not respected; however, it is highly unlikely to cause an issue with this particular application.
2) The email address in the label and mailto do not match.
3) System.out.println(ex.getMessage()); >> ex.printStackTrace();


import java.awt.Desktop;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.net.URI;
 

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;
 

public class wtf {

  static Desktop desktop;

  public static void main(String[] args) {

    

    if (Desktop.isDesktopSupported()) {

      desktop = Desktop.getDesktop();

    } else {

      System.out.println("Desktop class is not supported");

      System.exit(1);

    }

    JMenuItem openItem = new JMenuItem("Open");

    JMenuItem editItem = new JMenuItem("Edit");

    JMenuItem printItem = new JMenuItem("Print");

    JMenuItem browseToItem = new JMenuItem("Go to www.java2s.com");

    JMenuItem mailToItem = new JMenuItem("Email to a@java.com");

    JMenu fileMenu = new JMenu("File");

    JMenu mailMenu = new JMenu("Email");

    JMenu browseMenu = new JMenu("Browser");

    

    openItem.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        JFileChooser chooser = new JFileChooser();

        if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {

          try {

            desktop.open(chooser.getSelectedFile().getAbsoluteFile());

          } catch (Exception ex) {

            ex.printStackTrace();

          }

        }

      }

    });

    fileMenu.add(openItem);

    

    editItem.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        JFileChooser chooser = new JFileChooser();

        if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {

          try {

            desktop.edit(chooser.getSelectedFile().getAbsoluteFile());

          } catch (Exception ex) {

            ex.printStackTrace();

          }

        }

      }

    });

    fileMenu.add(editItem);

    

    printItem.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        JFileChooser chooser = new JFileChooser();

        if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {

          try {

            desktop.print(chooser.getSelectedFile().getAbsoluteFile());

          } catch (Exception ex) {

            ex.printStackTrace();

          }

        }

      }

    });

    fileMenu.add(printItem);

    

    browseToItem.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        try {

          URI browseURI = new URI("www.java2s.com");

          desktop.browse(browseURI);

        } catch (Exception ex) {

          System.out.println(ex.getMessage());

        }

      }

    });

    browseMenu.add(browseToItem);
 

    mailToItem.addActionListener(new ActionListener() {

      public void actionPerformed(ActionEvent e) {

        try {

          URI mailURI = new URI("mailto:support@java.com");

          desktop.mail(mailURI);

        } catch (Exception ex) {

          System.out.println(ex.getMessage());

        }

      }

    });

    mailMenu.add(mailToItem);
 

    JMenuBar jMenuBar = new JMenuBar();

    jMenuBar.add(fileMenu);

    jMenuBar.add(browseMenu);

    jMenuBar.add(mailMenu);
 

    JFrame frame = new JFrame();

    frame.setTitle("Desktop Helper Applications");

    frame.setSize(300, 100);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setJMenuBar(jMenuBar);

    frame.setVisible(true);

    

  }

}

Open in new window

0
Comment
Question by:modsiw
  • 2
2 Comments
 
LVL 16

Accepted Solution

by:
ellandrd earned 500 total points
ID: 20315074
has this example anything to do with this:

http://java.sun.com/developer/technicalArticles/J2SE/Desktop/javase6/desktop_api/

anyways i cant see much wrong but i would change some of the exception types like this:

try {
   URI browseURI = new URI("www.java2s.com");
   desktop.browse(browseURI);
} catch (Exception ex) {
   System.out.println(ex.getMessage());
}

should be:

try {
   URI browseURI = new URI("www.java2s.com");
   desktop.browse(browseURI);
} catch (IOException ex) {
   System.err.println(ex.getMessage());
} catch(URISyntaxException use) {
   System.err.println(use.printStackTrace());
}

ellandrd
0
 
LVL 16

Expert Comment

by:ellandrd
ID: 20459650
what a grade B?  what did i do wrong?

ellandrd
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…

895 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now