idea 中新建java类不显示后缀名？

Question

在idea中新建一个类，我想显示.java 的后缀名？

Answer 1

You can check it in the settings. Isn’t it bad if it doesn’t show up?
Change the view in the above project

Answer 2

Answer 3

I can’t think of any reason to display it. The file types of idea are intuitively represented with a small icon. And the colors are different

The icon of the class is C
The method is M
The interface is I
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