My Snake Game:-

// Demonstrate the key event handlers.

/*

<applet code="SmartGame" width=300 height=100>

</applet>

 */

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

public class SmartGame extends Applet implements KeyListener {

    String msg = "Score: 0";

    Image img1, runImg, runImg1, runImg2, runImg3, runImg4, findImg;

    int UserX; //for window width

    int UserY; //for window Height

    int RX, RY, i, j;// output coordinates

    int count = 0;

    int X = 10, Y = 30;

    public void init() {

        runImg1 = getImage(getDocumentBase(), getParameter("myRunImg1"));

        runImg2 = getImage(getDocumentBase(), getParameter("myRunImg2"));

        runImg3 = getImage(getDocumentBase(), getParameter("myRunImg3"));

        runImg4 = getImage(getDocumentBase(), getParameter("myRunImg4"));

        runImg = runImg1;

        findImg = getImage(getDocumentBase(), getParameter("myImgFind"));

        img1 = getImage(getDocumentBase(), getParameter("myImg1"));

        setFont(new Font("serif", Font.BOLD, 30));

        setBackground(Color.gray); //lightGray

        setForeground(Color.red);

        addKeyListener(this);

        requestFocus(); // request input focus

    }

    public void start() {

        UserX = (Integer.parseInt(getParameter("widthX"))) - 45; //for window width

        UserY = (Integer.parseInt(getParameter("heightY"))) - 45; //for window Height

        RX = (int) (Math.random() * (UserX - 50));

        RY = (int) (Math.random() * (UserY - 50));

        i = (int) (Math.random() * (UserX - 50));

        j = (int) (Math.random() * (UserY - 50));

    }

    public void keyPressed(KeyEvent ke) {

        if ((i <= (RX + 50) && i >= (RX - 30)) && (j <= (RY + 50) && j >= (RY - 30))) {

            msg = "Score: " + (++count);

            repaint();

            RX = (int) (Math.random() * (UserX - 50));

            RY = (int) (Math.random() * (UserY - 50)); // output coordinates

        }

        int key = ke.getKeyCode();

        switch (key) {

            case KeyEvent.VK_LEFT:

//msg += "<Left Arrow>";

                runImg = runImg1;

                if (i > 0 && i < UserX) {

                    i -= 10;

                } else if (i <= 0) {

                    i = UserX - 10;

                } else if (i >= UserX) {

                    i = 5;

                }

                break;

            case KeyEvent.VK_RIGHT:

                runImg = runImg2;

//msg += "<Right Arrow>";

                if (i > 0 && i < UserX) {

                    i += 10;

                } else if (i <= 0) {

                    i = UserX - 10;

                } else if (i >= UserX) {

                    i = 5;

                }

                break;

            case KeyEvent.VK_UP:

                runImg = runImg3;

//msg += "<UP Arrow>";

                if (j > 0 && j < UserY) {

                    j -= 10;

                } else if (j <= 0) {

                    j = UserY - 10;

                } else if (j >= UserY) {

                    j = 5;

                }

                break;

            case KeyEvent.VK_DOWN:

                runImg = runImg4;

//msg += "<Down Arrow>";

                if (j > 0 && j < UserY) {

                    j += 10;

                } else if (j >= UserY) {

                    j = 5;

                } else if (j <= 0) {

                    j = UserY - 10;

                }

                break;

        }

        repaint();

    }

    public void keyReleased(KeyEvent ke) {

    }

    public void keyTyped(KeyEvent ke) {

    }

// Display keystrokes.

    public void paint(Graphics g) {

        Thread t = Thread.currentThread();

        int xpoints1[] = {1, (UserX + 45) - 1, (UserX + 45) - 1, 1};

        int ypoints1[] = {1, 1, (UserY + 45) - 1, (UserY + 45) - 1};

        int num1 = 4;

        g.drawPolygon(xpoints1, ypoints1, num1);

        int xpoints2[] = {2, (UserX + 45) - 2, (UserX + 45) - 2, 2};

        int ypoints2[] = {2, 2, (UserY + 45) - 2, (UserY + 45) - 2};

        int num2 = 4;

        g.drawPolygon(xpoints2, ypoints2, num2);

        if (count <= Integer.parseInt(getParameter("wonGame"))) {

            if (count >= Integer.parseInt(getParameter("wonStar"))) {

                g.setColor(Color.blue);

                g.drawString("You Have Won: ", UserX - 300, 30);

                g.drawImage(img1, UserX - 100, UserY - (UserY - 2), this);

                g.setColor(Color.red);

            }

        } else {

            g.drawString("You Have Wone The Game !", UserX - (UserX - 350), UserY - (UserY - 150));

            g.setColor(Color.green);

            g.drawString("Congratulations!", UserX - (UserX - 250), UserY - (UserY - 100));

            g.setColor(Color.yellow);

            g.drawString("Now Game will be initialise!", UserX - (UserX - 450), UserY - (UserY - 200));

            g.setColor(Color.red);

            try {

                Thread.sleep(5000);

            } catch (Exception ex) {

            }

            count = 0;

            msg = "Score: " + count;

            g.drawString(msg, X, Y);

// g.drawString(" ", UserX-(UserX-200), 30);

// repaint();

        }

        g.drawString(msg, X, Y);

        g.drawImage(findImg, RX, RY, this);

        g.drawImage(runImg, i, j, this);

//g.fillOval(i,j,30,30);

//g.fillOval(RX,RY,30,30); // for Random x and Random y

    }

}