一个在Windows环境下用J2ME编写的用于实现手机信息保护的程序-in a Windows environment using J2ME prepared by the phone for information protection procedures

introduce MIDLet, it help you get the basic knownledge of J2ME

Mobile Trail Explorer (MTE) has a feature that enables map images to be displayed in the background behind the trail. This feature is enabled within MTE by clicking Settings->Display->Scroll to Map Display and select one of the Draw Maps option