Whats meaning of the under wave green line in my file?

Question

The under wave green line in my code(under the /userfiles/):

The code is below:

<baseDir></baseDir>
<baseURL>/userfiles/</baseURL>
<licenseKey></licenseKey>
<licenseName></licenseName>

I don't know why there is the wave line under my code, if is somewhere I get mistake?

Answer 1

That means the IntelliJ IDEA check your word if is correct spelling.

If you change the userfiles to file or user, it will not have the under wave line, so there is no problem with it.

Answer 2

It intellij spell checking activated there, according to the standard dictionary of words stored.

Answer 3

当IntelliJ中的某些内容加下划线时，您应按Alt + Enter键，它会显示是否有错误或如何改进。但是如前所述，当它是绿色时，意味着拼写正确