测试手机对J2ME支持情况

import javax.microedition.lcdui.Display; 
import javax.microedition.lcdui.Form; 
import javax.microedition.lcdui.StringItem; 
import javax.microedition.midlet.MIDlet; 
import javax.microedition.midlet.MIDletStateChangeException; public class SysInfo extends MIDlet { 

private static Display display; 

private Form f; 

private StringItem si; 

private void appendItem(String lable,String name){ 
String it=System.getProperty(name); 
if (it!=null&&it.length()>0){ 
si = new StringItem(lable, it); 
f.append(si); 
} 
} 
/** 
* 
*/ 
public SysInfo() { 
super(); 
display = Display.getDisplay(this); 

f = new Form("系统信息"); 

// TODO 自动生成构造函数存根 
} 

/* 
* 
* @see javax.microedition.midlet.MIDlet#startApp() 
*/ 
protected void startApp() throws MIDletStateChangeException { 
// TODO 自动生成方法存根 
appendItem("平台名称:","microedition.platform"); 
appendItem("CLDC或CDC版本:","microedition.configuration"); 
appendItem("MIDP版本:","microedition.profiles");