Solved

Simple swing application

Posted on 2007-11-19
2
196 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
Comment Utility
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
Comment Utility
what a grade B?  what did i do wrong?

ellandrd
0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
IT Company 5 68
countPairs challenge 7 57
groovy example issue 10 65
advertisement module in core php 4 78
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…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

772 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

10 Experts available now in Live!

Get 1:1 Help Now