Capture keyboard input

I have a swing app that will run on a touch screen. There will be no keyboard. I will have a magnetic card reader plugged into the ps/2 port.
Basically I need to capture the output of the magnetic card reader. At the moment when a card is swiped it goes in the first JTextfield.
Now I can capture the output outside of swing by using
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
String data = stdin.readLine();
System.out.println(m_data);
However this does not work inside of swing or at least my swing app.
So in swing, how can I capture or redirect text input?
I guess I could write a fuction that appends a character each time a key event occurs like KeyTyped. However I am not sure that is the most efficient way to go about it.

A document listner might work, however I think that url you posted also shows a way using an action listner.
Something I forgot to mention was, when I swipe the card I do not want the card's data placed in a JTextField.
To the point when a card is swiped I want the data in a string.
At the moment when I swipe a card it goes into a JTextfield. I do not want that to be the case. Sure I can make a way around it with a hidden text field or something, and use a listner for events on the text field.
However I do not think that is the proper way to go about this.
So I am looking for an event that will be fired or take place as soon as there is input from the keyboard/card reader. I do not want a JTextField to even have the chance to grab and display that data. I want to know first, and take that data and do something else with it.
In detail, when a card is swipped, the data will be parsed and JTextFields will display the parsed information. However I need to be the first one receiving the data, not any of the JTextFields in my app.
The app does not require use of a keyboard. If possible I would like the app to not work at all with a keyboard, and any input from a keyboard or card reader is calling my own code to deal with those events.
So if someone does plug in a keyboard, I do not want them to be able to do anything. That's not a must, but if I can accomplish it with the above I will be a happy camper.
In short I need to capture all input from the ps/2 port, and be notified with input starts and ends. Or at least when it ends.
Any suggestions are greatly appreciated.

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Capturing keyboard input as written

I would like to know if I can use Scanner class to make a program to read users input on the keyoard same way like talk or ytalk program on unix does? Meaning, I would like to read each character immediately and not wait for carriage return.
Then I would like to write each character somewhere. Perhaps first just echo it on the command line.
Thanks for any ideas with the Scanner class (JDK 1.5)!
Jukka

Hey,
I don't want to believe Peter's answer. Hard to
believe that I cannot read from the console
"on-the-fly".
JukkaWell life is full of things I don't want to believe, but life sucks don't it.

Just started with NetBeans IDE, need to capture all keyboard input!

Hello,
I discovered that I can only capture keyboard events when my GUI application has focus. Ok, but I need a functionality that can capture all keyboard input, even if my application runs in the background or in the system tray.
How can I achieve that?
Regards,
Mirza

I know...sorry, didn't mean to imply otherwise.Don't worry about it; I wasn't offended. (I didn't think that that was what you were tying to do.) I was trying to (subtly) take this a different direction. (Was going to write something Solaris specific or perhaps something in ASM that would effectively do what the O/P wanted. Seeing as how Key Loggers only serve one practical purpose - as far as I know - I just wanted to give him code that he could do nothing with.)

Take printscreen and detect mouse/keyboard input

hi guys,
I'm looking a way to take printsceen and detecting mouse/keyboard input in Adobe Air app using html/ajax .. is it possible ?
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I wrote a blog post on how to do screen capturing using Adobe AIR abnd HTML/JavaScript. Maybe it'll help you out:
http://www.andymatthews.net/read/2009/11/05/Capture-BitmapData-with-JavaScript-AIR-applica tions
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document.addEventListener('keydown', function(evt){
// do something

Keyboard input delay Flex/AIR

I've build an AIR desktop app that uses an USB barcode scanner. To capture the token provided by the barcode scanner an input field is used.
When testing the barcode input was only partially captured by the scanner. This was caused by the barcode scanner's input coming in the fast. Increasing the key stroke delay of the barcode scanner (config tool from motorola) solved the problem however this is not ideal.
Does anyone has experience with this type of problems? What is an approach to solve this? Maybe by writing an Java compagnion app that captures the keyboard input?

I just ran into this same problem. Our users are scanning barcodes from various labels using various types of scanners (changing the delay using scanner software wasn't an option). We also have to allow them to scan to a TextInput within a DataGrid, which created even more problems. There were 2 very interesting things I learned in coming up with a solution for this one:
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2. When adding to a DataGrid control, I learned that both the DataGrid's & the TextInput's key down events are fired by the same SystemManager event. Though you can override the TextInput's keyDownHandler, you can't override the DataGrid's because it's a private method. So, even though my delay was being processed in the TextInput, the DataGrid was forcing control away from it and moving to the next item in the grid. To get around this one, I had to stop propagation of the event from the TextInput, then re-start the DataGrid's event once the delay was complete. I also had to process a focus-out event to get it to move to the next item in the DataGrid.
Here's the code I used inside a custom TextInput control to handle processing both stand-alone and inside a DataGrid:
override protected function keyDownHandler(event:KeyboardEvent):void
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      // Barcode scanners quite often process the enter key before the TextInput
      // control has time to finish processing all the text. (e.g., Instead of
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           else
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                if (parent != null && parent.parent != null &&
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                return;
      super.keyDownHandler(event);
* This is a copy of the keyboard event to be processed once the barcode
* delay is complete.
private var _keyboardEvent:KeyboardEvent = null;
* This method launches a timer of sufficient length to allow barcode
* scanner text to be processed before it re-launches the keyboard event.
* @param event This is the key-down event to be restarted once the timer is
* complete.
private function barcodeTimer(event:KeyboardEvent):void
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   t.addEventListener(TimerEvent.TIMER,
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Is there a way of using keyboard input?

Is there a way of using keyboard input in Edge? For example when you press the space-bar it will open a url. This is probaly done though programing.

Shift/Command and Alt/Control have there own separate event routines.
Example
e.metaKey         // depends on browser and targets the Apple key
e.ctrlKey             // targets the Control or Ctrl key
e.altKey              // targets the Alt key
e.shiftKey           // targets the Shift key
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if (e.shiftKey){                                              //If Shift key is pressed
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if (e.shiftKey && e.which == 32){                     //If Shift Key + Space Bar pressed
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If you wanted to combine the Shift key + some other keyboard Character Code from the above noted list (http://rmhh.co.uk/ascii.html), then change the value of e.which to equal (==) that Character Code. Example from the list, the Character Code for the keyboard 'a' is 65, as altered below.
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Good luck
Darrell

Disable most of keyboard input

Would it be possible with a pure Java code only to disable normal use of keyboard input (like have the application just eat every keystroke except the ESC key for example)?
I'm most interested in using this for disabling screen capture key sequences (such as CTRL-Alt-PrtScr in Windows) but also for disabling many other key sequences such as CTRL-Alt-Del.
Thanks.

This would be too insecure so it's not possible. Imagine if an applet on a webpage could intercept all your keyboard input and steal all your passwords as you log into sites !

Keyboard input, alt + "111" possible?

keyboard input, alt + "111" possible?

Hai,
you should provide some more inputs on your post..
any way we can detect alt+111 as following
Use KeyListener for your component...
KeyPressed(KeyEvent evt) {
processKey(evt);
KeyPressed(KeyEvent evt) {
processKey(evt);
processKey(evt) {
if(evt.getKeyCode() == KeyEvent.VK_ALT)
// do some thing
if(evt.getKeyChar() == KeyEvent.VK_1)
// do some thing..
So we can capture alt+111
Regards
Desizners

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Reset PRAM: http://support.apple.com/kb/PH14222
Start up in Safe Mode.
http://support.apple.com/kb/ph14204
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A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Call AppleCare or take it to the Apple store to have it checked out.
Genius Bar reservation
http://www.apple.com/retail/geniusbar/
Best.

How to have same keyboards input source in Mac and Windows???

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I run Windows over Parallels Desktop
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Thank you

Can I use an AirPort Extreme Base Station "n"
Yes.
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(My apology. My English is not perfect but I'll try my best. >_<)
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Edit/Delete Message

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Ivan

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Capture keyboard input

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