问题
What basically happens is an error (little red cross) appears under my project name as if there was an error somewhere. When I look into my project, no errors, and when I run my code, no errors, it works perfectly fine. Can someone explain to me how I can fix it? And what it means?
I'm using Eclipse Luna.
来源：https://stackoverflow.com/questions/27724969/an-error-appears-under-my-project-name-but-no-error-exists