爲什麽有個感嘆號?

Question

工程好像沒得錯，爲什麽會有個感嘆號,求解！

Answer 1

黄色三角感叹号是文件中出现可能会产生歧义或错误或者无用的变量和方法,IDE会自动显示的警告信息,一般情况下对项目启动和运行没有影响,可以忽略,或者通过手动更改文件中有问题的代码进行解决

Answer 2

警告嘛~这东西只有慢慢查~

Answer 3

你管它干嘛，又不影响程序运行。

Answer 4

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