Snake

//My verson of snake, has some minor bugs

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Graphics;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.*;
import java.awt.*;
import javax.swing.Timer;

public class EnkelSnake extends JFrame implements KeyListener{

    private SpillPanel panel;

    public EnkelSnake(int x, int y){
        super("Snake V.1");
        panel = new SpillPanel(x, y);
        add(panel, BorderLayout.CENTER);
        setSize(x, y);
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        addKeyListener(this);
        panel.go();
    }

    private class SpillPanel extends JPanel{

        private Point sign = new Point();
        private Point size = new Point();
        private Point applePos = new Point(100,100);
        private Random rand = new Random();

        private int counter = 0;
        private int score = 0;

        private int antalldeler = 1;
        private int nedteller = 5;
        private int multiplayer = 1;

        private ArrayList<Point> position = new ArrayList<Point>();
        private boolean EatFirstApple = false;

        Timer t = new Timer(1000, new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                counter++;
            }
        });

        public SpillPanel(int x, int y){
            size.x = x;
            size.y = y;
            for (int i = 0; i < antalldeler; i++) {
                position.add(i, new Point( (x / 2) - 10 * i, (y / 2)));
            }
            setSign(1,0);
        }
        public void setSign(int x, int y){
            this.sign = new Point(x,y);
        }
        public Point getSign(){
            return sign;
        }

        public void paintComponent(Graphics g){
            super.paintComponent(g);
            for (int i = 0; i < antalldeler; i++) {
                g.fillRect(position.get(i).x, position.get(i).y, 9, 9);
            }
            g.drawRect(10, 10, 460, 440);
            g.fillOval(applePos.x, applePos.y, 10, 10);
            g.drawRect(100, 0, 200 , 10);
            g.fillRect(100, 0, ((nedteller - counter)) * 200/nedteller, 10);
            g.drawString(("Score: " + score), 10, 10);
            g.drawString("x"+ multiplayer, 400, 10);
        }

        public void newApple(){
                applePos.x = rand.nextInt(40) * 10 + 10;
                applePos.y = rand.nextInt(40) * 10 + 10;
                t.restart();
                counter = 0;
        }

        public void outOfTime(){
            if(counter > nedteller){
                newApple();
                multiplayer = 1;
            }else{
                t.start();
            }
        }

        public void eatTail(){
            for (int i = 1; i < antalldeler; i++) {
                if((position.get(0).x < position.get(i).x + 5
                        && position.get(0).x > position.get(i).x - 5)
                        && position.get(0).y < position.get(i).y + 5
                        && position.get(0).y > position.get(i).y - 5){
                        System.exit(0);
                }
            }

        }


        public void eatApple(){
            if((position.get(0).x <= applePos.x + 5
                    && position.get(0).x >= applePos.x - 5)
                    && position.get(0).y <= applePos.y + 5
                    && position.get(0).y >= applePos.y - 5){
                newApple();
                score += 10 * multiplayer;
                position.add(position.size(), new Point( position.get(position.size() - 1).x +5, position.get(position.size() - 1).y ));
                antalldeler++;
                multiplayer++;

            }
        }


        public void go(){
            while(true){
                repaint();
                outOfTime();
                eatApple();
                eatTail();
                try{
                    Thread.sleep(50);
                }catch(InterruptedException ie){}

                for (int i = antalldeler - 1 ; i > 0; i--) {
                    position.set(i,new Point(position.get(i - 1).x,
                            position.get(i - 1).y));
                }

                position.set(0, new Point(position.get(0).x + 10 * getSign().x,
                        position.get(0).y + 10 * getSign().y));


                if(position.get(0).x <= 5 || position.get(0).x >= size.x - 35 || position.get(0).y <= 0 || position.get(0).y >= size.y - 55){
                    System.exit(0);
                }
            }
        }
    }

    public static void main(String[] args) {
        new EnkelSnake(500, 500);
    }

    public void keyPressed(KeyEvent e) {

        int tast = e.getKeyCode();

        if(tast == KeyEvent.VK_UP && panel.getSign().y != 1){
                panel.setSign(0, -1);
        }
        else if(tast == KeyEvent.VK_DOWN && panel.getSign().y != -1){
                panel.setSign(0, 1);
        }
        else if(tast == KeyEvent.VK_LEFT && panel.getSign().x != 1){
                panel.setSign(-1,0);
        }
        else if(tast == KeyEvent.VK_RIGHT && panel.getSign().x != -1){
                panel.setSign(1, 0);
        }
    }

    public void keyReleased(KeyEvent e) {}
    public void keyTyped(KeyEvent e) {}
}