new Thread new Runnable public void run while true try if System in re

new Thread(new Runnable() {
            public void run() {
                while(true) {
                    try {
                        if(System.in.read() == 'q' || System.in.read() == 'Q' || System.in.read() == 'й' || System.in.read() == 'Й')
                            System.exit(0);
                    } catch(IOException io) {}
                }
            }
        }).start();