警告内容：
Description Resource Path Location Type Build path specifies execution environment JavaSE-1.6. There are no JREs installed in the workspace that are strictly compatible with this environment.communication Build path JRE System Library Problem
去除警告方法：
工程名称上右键菜单：Properties--->Java Build Path--->Libraries，选中"JRE System Library[JavaSE-1.6]"，选择右侧按钮“Edit"，打开新界面中选择"Workspace default JRR (JDK1.7......)"即可。
Myeclipse新建Web Project 后提示warning的解决办法
原文：http://www.cnblogs.com/youngs/p/6565524.html
