[J2ME] 获得MIDlet信息

 import javax.microedition.lcdui.Display;
 import javax.microedition.lcdui.Form;
 import javax.microedition.lcdui.TextField;
 import javax.microedition.midlet.MIDlet;
 import javax.microedition.midlet.MIDletStateChangeException;

 public class main extends MIDlet {

     private Display ds;
     private Form fr;
     private TextField tf;
     private String proString="";

     public main() {
         // TODO Auto-generated constructor stub
         proString=proString+"厂商: "+getAppProperty("MIDlet-Vendor")+"\n";
         proString=proString+"描述: "+getAppProperty("MIDlet-Description")+"\n";
         proString=proString+"自定义版本: "+getAppProperty("jadFile-Version")+"\n";
         proString=proString+"数据空间: "+getAppProperty("MIDlet-Data-Size");
         fr=new Form("MIDlet Properties");
         tf=new TextField("属性:",proString,500,TextField.ANY);
         fr.append(tf);
     }

     protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
         // TODO Auto-generated method stub

     }

     protected void pauseApp() {
         // TODO Auto-generated method stub

     }

     protected void startApp() throws MIDletStateChangeException {
         // TODO Auto-generated method stub
         ds=Display.getDisplay(this);
         ds.setCurrent(fr);
     }

 }