Solved

Processing a TAB KeyEvent

Posted on 2004-09-05
6
1,317 Views
Last Modified: 2012-08-13
Hey Experts,

I wanted to programmatically process a TAB KeyEvent at a certain part of a program (as if the user has pressed the TAB Key). I wrote the following piece of code:

DefaultFocusManager fm = new DefaultFocusManager();
fm.processKeyEvent(jtablex,KeyEvent.VK_TAB); //where jtablex is a Component

The problem with this code was that KeyEvent.VK_TAB is an integer not a KeyEvent object (and there is no overloaded function that takes a component and a KeyEvent object).What do I do to process this KeyEvent?
0
Comment
Question by:mte01
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 270 total points
ID: 11983664
Try

EventQueue.postEvent(new KeyEvent(......................));

and see

http://java.sun.com/j2se/1.5.0/docs/api/java/awt/event/KeyEvent.html#KeyEvent(java.awt.Component, int, long, int, int, char)
0
 
LVL 3

Assisted Solution

by:JohnnyAffa
JohnnyAffa earned 230 total points
ID: 11984021
here you go!  

ive simulated the TAB key press by using a thread and tiggering it to act after 3 seconds, after which a message "Wow, how did that happen?" is displayed to the console.  you need to implement the KeyListener interface givent that you want to trigger a key event.

how its want you want ;-)

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

class TAB extends JFrame implements Runnable, KeyListener
{
      public TAB()
      {
            this.setInterface();
      }

      private void setInterface()
      {
            this.setBounds(50,80,400,400);

            this.setVisible(true);

            (new Thread(this)).start();
      }

      public void keyPressed( KeyEvent e)
      {
            if ( e.getID() == KeyEvent.VK_TAB )
                  System.out.println("Wow, how did that happen?");
      }
 
      public void keyReleased( KeyEvent e)
      {

      }

      public void keyTyped( KeyEvent e)
      {

      }

      public void processWindowEvent(WindowEvent event)
      {
            if ( event.getID() == WindowEvent.WINDOW_CLOSING )
                  System.exit(0);
      }

      public void run()
      {
            try
            {
                  Thread.sleep(3000);
                  this.keyPressed(new KeyEvent(this,KeyEvent.VK_TAB,0,0,0));
            }
            catch (Exception a)
            {

            }
      }

      public static void main(String args[])
      {
            new TAB();
      }
}
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 270 total points
ID: 11984234
That of course won't act like a 'normal' key event as it's not posted on the event dispatch thread
0
Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

 
LVL 3

Author Comment

by:mte01
ID: 11984379
Thanks for all your support guys, I'll try to award the points as fairly as possible.
0
 
LVL 3

Author Comment

by:mte01
ID: 11984384
I increased the number of points so that you get fairly rewarded
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 11984394
:-)
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
add projects t working set in maven 2 63
Glassfish admin console not working 1 83
how to debug htl and js pages 8 76
Java syntax, or is it Selenium 6 57
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
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 covers a step-by-step guide to install VisualVM launcher in eclipse.
Suggested Courses

738 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