This returns the absolute root path way system who told me indetail about the next

public static final String getRootPath () {
String path = Constants.class.getResource ("/"). toString ();
return path.substring (6, path.length ()). replace ("% 20", "");
}

What does it mean when two here , ah, there % 20
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obtain class where the file path , the path interception hard ,% 20 is a space of the display , so you want to restore .
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Oh, thanks , I see