eclipse 项目显示红叉

***修改eclipse 代码提示级别
1.单个项目修改
项目上右键-->properties-->java compiler-->building-->enable project specific setting-->build path problems-->选中abort   Incomplete build path/Circular dependencies  这两个选项修改为Warning
2.整个环境修改
window->preferences->java->compiler->building->build path problems-->选中abort   Incomplete build path/Circular dependencies  这两个选项修改为Warning
原文链接：http://blog.csdn.net/echineselearning/article/details/7013084