Launcher.java

package vaysym;
import java.awt.Canvas;
import javax.swing.JFrame;

public class Launcher extends Canvas implements Runnable{
    public static JFrame frame;
    private Thread thread;
    private boolean running = false;
    public static String inputString = "";

    public Launcher(){
        new Window(this);
        this.addKeyListener(new Keyboard());
        this.start();
    }

    public void setFrame(JFrame frame){
        Launcher.frame = frame;
    }

    public synchronized void start(){
        thread = new Thread(this);
        thread.start();
        running = true;
    }
    public synchronized void stop(){
        try{
            thread.join();
            running = false;
        }catch(Exception e){
            e.printStackTrace();
        }
    }

    public void run(){
        long lastTime = System.nanoTime();
        double amountOfTicks = 60;
        double ns = 1000000000 / amountOfTicks;
        double delta = 0;
        long timer = System.currentTimeMillis();

        while(running){
            long now = System.nanoTime();
            delta += (now-lastTime)/ns;
            lastTime = now;
            while(delta >= 1){
                delta--;
            }

            if(System.currentTimeMillis()-timer > 1000){
                timer += 1000;
            }
        }
    }

    public static void main(String args[]){
        new Launcher();
    }
}