为什么这个源文件上会出现感叹号

Question

eclipse上，为什么会出现感叹号！这个感叹号怎么设置去掉

Answer 1

https://blog.51cto.com/u_16021118/6150943#:~:text=%E8%A7%A3%E5%86%B3%20Eclipse%E9%A1%B9%E7%9B%AE%E7%BA%A2%E6%84%9F%E5%8F%B9%E5%8F%B7%E5%8E%9F%E5%9B%A0%EF%BC%9A%E6%98%BE%E7%A4%BA%E7%BA%A2%E8%89%B2%E6%84%9F%E5%8F%B9%E5%8F%B7%E6%98%AF%E5%9B%A0%E4%B8%BAjar%E5%8C%85%E7%9A%84%E8%B7%AF%E5%BE%84%E4%B8%8D%E5%AF%B9%E8%A7%A3%E5%86%B3%EF%BC%9A%E5%9C%A8%E9%A1%B9%E7%9B%AE%E4%B8%8A%E5%8F%B3%E5%87%BBBuild%20Path%20-%3E%20Configure%20Build,Paht...%20%28%E6%88%96Propertise-%3EJava%20Build%20Path%29%EF%BC%8C%E5%9C%A8Java%20Build%20Path%E4%B8%ADLibraries%EF%BC%8C%E7%BA%A2%E8%89%B2%E5%8F%89%E5%8F%B7%E7%9A%84%E5%8C%85%E4%B8%BA%E8%B7%AF%E5%BE%84%E9%94%99%E8%AF%AF%E7%9A%84%E5%8C%85%E3%80%82
这个链接是专门针对你的问题的