How to listen a key event without having any window component

Question

Hi all,
I would like to know how can I listen key events from an application that doesn't use windows
Thanks

Answer 1

yoiu can make a Thread run inside your application. This will listen for inputs in the command line. For examplethis is part of a chat server (on the console) with let the server manager to enter messages or commands.
The message or command entered on the console by the user is catched and processed as a String. The string is passed to the processConsole() method, you must define yourself.
Th Thread is never stopped, so the user may enter any message at any time
The core of you application should also be a Thread for better performance, but maybe it will also work without. Jst try and provide needed importstatements.
Runnable runInput = new Runnable() {
        public void run() {
          while(true) {
            try {
              byte buffer[] = new byte[255];
              System.out.print(prompt);
              System.in.read(buffer);//, 0, 255);
              String inputString = new String(buffer, "Default");
              processConsole(inputString);
            catch(NullPointerException npe) {
              System.out.println("Syntax error");
            catch(Exception e) {e.printStackTrace(); }
      Thread inputThread = new Thread(runInput);
      inputThread.start();