package xingzuo;import javax.microedition.lcdui.*;import java.io.IOException;public class startForm extends Form implements CommandListener {  private static Command exitCmd;  private static Command okCmd;  private Image startImage;  //顯示程序的啟動畫面//  public startForm() {    super("");    okCmd = new Command("進入", Command.OK, 1);    exitCmd = new Command("離開", Command.EXIT, 1);    startImage = mainClass.createImage("/picRes/logo.png");    this.addCommand(okCmd);    this.addCommand(exitCmd);    this.setCommandListener(this);    this.append(new ImageItem(null,                              startImage,                              ImageItem.LAYOUT_CENTER,                              null)) ;    //this.append("    ---------------------\n");    //this.append("         星座 \n");    //this.append("          版本: 1.0\n");    //this.append("    ---------------------\n");    Display.getDisplay(mainClass.instance).setCurrent(this);  }  public void commandAction(Command command, Displayable displayable) {    if (command == okCmd)     mainClass.ShowMainMenu();   if (command == exitCmd)     mainClass.quitApp();  }}