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Thread: Add keyListener to thread

  1. #1
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    Default Add keyListener to thread

    Hello,

    I want to try and run a thread that starts running on start and quits after pressing a key.
    I cant seem to detect keypresses. can anyone help me out with this?

    Thanks in advance..
    i cant seem to add code:
    Post denied. New posts are limited by number of URLs it may contain and checked if it doesn't contain forbidden words.

    its just a code snippit without links or anything...

    this is a small part... but how do i add a keyListener in here that listends to a random key?
    The class implements KeyListener and the overrided method "keyPressed" sets the isRunning boolean to false... but the keyPressed method is never executed.
    public static void main(String[] args) {
    		Thread thread = new Thread() {
    			public void run() {
     
    				while(isRunning){
    					System.out.println("running");
    					try {
    						sleep(1000);
    					} catch (InterruptedException e) {
    						// TODO Auto-generated catch block
    						e.printStackTrace();
    					}
    			    }
    			}
    		};
    		thread.start();
    	}


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    Default Re: Add keyListener to thread

    This is a console program, not a GUI, right?

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    Default Re: Add keyListener to thread

    actually i was hoping to be able to do it with just a thread in the background but i dont think it's possible...
    I want a background thread to keep track of key presses and kill the thread after pressing a key like esc or something...

    Like a keylogger. but for a different purpose

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    Default Re: Add keyListener to thread

    Quote Originally Posted by Qlubbie View Post
    actually i was hoping to be able to do it with just a thread in the background
    Listeners, in general, are used with GUI (AWT/Swing) components ..... not for any non-GUI application.

    Quote Originally Posted by Qlubbie View Post
    I want a background thread to keep track of key presses and kill the thread after pressing a key like esc or something...

    Like a keylogger. but for a different purpose
    If you want to receive keyboard events "globally" on the system, even if the user is interacting with any other application, beware that this is not possible with the standard Java SE framework.
    For these things, you need to know and use some native O.S. functions (if there are, and at least for the Windows platform, the Win32 API contains these functions). And from Java you need to use JNI, Java Native Interface to use these functions. All these are advanced things, that are very specific for each O.S.
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

    Useful links for Java beginners My new project Java Examples on Google Code

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    Default Re: Add keyListener to thread

    Closing this thread as either 'solved' or as a suspicious activity prohibited by the forum.

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