使用JAVA开发EMAIL工具的发送邮件源代码可以通过测试求接受邮件的源代码-use Java development tools EMAIL mail source code can be tested to accept mail for the source code

求实现发送和接收无附件电子邮件的功能，即发送和接收简单的文本信息。运行该程 序后，可以发送和接收简单的文本文件-Order to achieve non-attachment to send and receive e-mail functions, namely, to send and receive simple text messages. Run the program, you can send and receive simple text file