The contents are not showing any error!! I don't understand what the problem is?
Edit: I have already tried cleaning the projects, without success!
It's showing "failed to load properties file!
您可以使用,
Window --> Show View --> Problems
和/或
Window --> Show View --> Error Log
清理项目并重新启动 Eclipse 也可能会有所帮助。
您应该在 Eclipse 中检查这些情况下的“问题”视图。窗口 -> 显示视图 -> 如果当前对您不可见,则会出现问题。可能是java编译器版本错误或类似的东西。
尝试清理您的项目。有时这对我来说很好。
使用错误日志