I don't understand the error on eclipse

Question

Please somebody can help me with my error, there is nothing on console, but I can't run the project. This is creenshot:

thanks for help

Answer 1

单击底部的“问题”选项卡，查看错误是什么。

Answer 2

Clean your projects by going

Eclipse>Project>clean

Answer 3

Try cleaning the project (menu/Project/Clean). The project tree looks as if there's a compilation error in one of the files - there's a red "x" on the project; typically, the similar "x" would be on the problematic file. Which can be a source, or a resource, or the manifest. Open up the tree and try to find one.

Answer 4

我认为这是构建路径，也许您忘记添加或移动它了。