Eclipse and test packages now in white and un-run

摘要: Eclipse and test packages now in white and un-runnable
eclipse工程下面的package包成为White，并且相应的Java文件不可以运行。

一、症状

I have an issue with Eclipse and my test packages. They show as white icons instead of the default brown color normally used in Eclipse for packages... See image below:


what is more I can't run my tests from Eclipse now. I must be missing a basic configuration somewhere.
Can anyone help?

二、解决方法

找到了原因，问题就比较好解决了。就是我把资源从classpath 里面删除了。

I think these packages have been 'excluded' from the build path. (That's how I can make packages/classes look that way)
Right click on the "given project" --> "Build Path" --> "Configure build path".
See the "Source" tab. For each source folder you have three subsections: Included, Excluded, Native Library location.
Check if there are files/packages excluded.