The Eclipse project has a red exclamation point in front of the solution

Today from SVN download the project, after compiling, found that there are two projects have a red exclamation, has not found any reason, asked Baidu teacher, found the solution to the problem.

1. Click Problems on the console first

If the console is not problems, click on the toolbar window---show view---problems or shortcut alt+shift+q, select problems

2. After clicking, you can clearly see the cause of the error, and then the corresponding correction changes

This issue is a circular reference, resulting in the compilation is not over, because the Eclipse default circular reference is error, modified to warning can be

The Eclipse project has a red exclamation point in front of the solution