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java j2me ʹÓÃM3G·â×°

 
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.m3g.Camera;
import javax.microedition.m3g.Graphics3D;
import javax.microedition.m3g.Loader;
import javax.microedition.m3g.World;
import javax.microedition.midlet.MIDlet;
public class RMMIDlet extends MIDlet implements CommandListener {
  private Display myDisplay = null;
  private RetainedCanvas myCanvas = null;
  private Command exitCommand = new Command("Exit", Command.ITEM, 1);
  public RMMIDlet() {
    super();
    myDisplay = Display.getDisplay(this);
    myCanvas = new RetainedCanvas();
    myCanvas.setCommandListener(this);
    myCanvas.addCommand(exitCommand);
  }
  public void startApp() {
    myCanvas.init();
    myDisplay.setCurrent(myCanvas);
    myCanvas.start();
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
    myCanvas.stop();
  }
  public void commandAction(Command cmd, Displayable disp) {
    if (cmd == exitCommand) {
      try {
        destroyApp(false);
       &


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