Membuat bola Pantul

cara membuat bola pantul pada netbean 7.0

ini scripnya.

1.      Buat scrippt pada java class ..nama Bola1.klo sudah copy aja script dibawah ini :

import javax.microedition.lcdui.Graphics;

import javax.microedition.lcdui.Image;

import javax.microedition.lcdui.game.GameCanvas;

import javax.microedition.media.*;

import javax.microedition.media.control.VolumeControl;

public class Bola1 extends GameCanvas implements Runnable, PlayerListener {

    private boolean isPlay;

    private Image img1 ;

    private int x = getWidth()/2, y = getHeight() / 2, arahx = 1, arahy = 1;

    public static Player play;

    private VolumeControl vc;

    private static Player player;

    public Bola1(int arahx, int arahy){

        super(true);

        this.arahx = arahx;

        this.arahy = arahy;

        try{

            img1 = Image.createImage("/sipaku.png");

        }catch(Exception e){}

    }

    public void start(){

       isPlay = true;

       try{

                   playMedia("bg.mid", "mid");

             }catch(Exception e){}

       Thread t = new Thread(this);

       t.start();

    }

    public void stop() {

       isPlay=false;

    }

    public void run() {

        Graphics g = getGraphics();

        while(isPlay){

            DrawGame(g);

            try{

                Thread.sleep(50);

            }catch(Exception e){}

        }

    }

    private void DrawGame(Graphics g){

        //bersihkan layar

        g.setColor(255,255,255);

        g.fillRect(0, 0, getWidth(), getHeight());

        //gambar bola

        g.drawImage(img1, x, y, Graphics.HCENTER|Graphics.VCENTER);

        //ubah arah

        x += arahx;

        y += arahy;

        if(x >= getWidth() || x<=0) {

            arahx *= - 1;

            // suara memantul

            try{

                    playMedia("bom.wav", "wav");

                }catch(Exception e){}

        }

        if(y >= getHeight() || y<=0) {

            arahy *= - 1;

            // suara memantul

            try{

                    playMedia("bom.wav", "wav");

                }catch(Exception e){}

        }

        //tampilkan

       flushGraphics();

    }

    private void playMedia(String file, String p) throws Exception

    {

        if(p.equals("wav")){

            player = Manager.createPlayer(getClass().getResourceAsStream(file),"audio/x-wav");

        }else if(p.equals("mid")){

            player = Manager.createPlayer(getClass().getResourceAsStream(file),"audio/midi");

        }

        player.addPlayerListener(this);

        player.setLoopCount(1);

        player.prefetch();

        player.realize();

        vc = (VolumeControl)player.getControl("VolumeControl");

        if (vc != null) {

            vc.setLevel(100);

        }

        player.start();

    }

    public void playerUpdate(Player player, String event, Object eventData) {

        throw new UnsupportedOperationException("Not supported yet.");

    }

}

2.buat Midlet nya ...nama Midlet ini scriptnya..

import javax.microedition.midlet.*;

import javax.microedition.lcdui.*;

import javax.microedition.media.*;

import javax.microedition.media.control.VolumeControl;

public class Midlet extends MIDlet implements CommandListener, PlayerListener {

    private Display display;

    private List list = new List("Daftar File", List.IMPLICIT);

    private Command exit = new Command("Exit", Command.EXIT, 0),

                    play = new Command("Play", Command.OK, 0);

    private VolumeControl vc;

    private static Player player;

    public void startApp() {

        display = Display.getDisplay(this);

        list.append("bg.mid", null);

        list.append("explode.wav", null);

        list.append("gambang.mid", null);

        list.addCommand(exit);

        list.addCommand(play);

        list.setCommandListener(this);

        display.setCurrent(list);

    }

    public void pauseApp() {

    }

    public void destroyApp(boolean unconditional) {

    }

    public void commandAction(Command c, Displayable d){

     if(c == exit){

         destroyApp(true);

         notifyDestroyed();

     }

     else if(c == play) {

         int pilih = list.getSelectedIndex();

         switch(pilih) {

             case 0 : {

                 try{

                   playMedia("bg.mid", "mid");

             }catch(Exception e){}

                 break;

             }

             case 1 : {