J2ME编写的一个小程序.可以监听手机按键,把代码显示在屏幕上.功能简单,是自己学的时候练习用的,没什么技术含量.-A small program written in J2ME. You can monitor the phone keypad, the code displayed on the screen. Features simple, is the time to learn to practice their own use, no technical content.