求一个简单记事本的java程序代码，源代码要带解释，网上找的就不要在这里发了，能实现基本功能就够了。要能够在jcreator里运行成功无报错。能提供运行图片最好-Seeking a simple notepad java code, source code to take explain, do not find online here made, to achieve basic functionality is enough. In jcreator to be able to run successfully without error. Operating picture to provide the best