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That gray blob right before 0. Please identify the feature, and, if possible, tell how to change the color of this hint.
I'm a fan of JetBrains IDEs, but only occasionally I use Java. Seen this feature some time ago, but totally forgot what it is :(
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In IDEA, clicks on the method name, press CTRL + Q to show the method signature on a pop up. Alternatively, press CTRL + P to show the available parameters.
on the toolbar in the Find tool window or press Ctrl+Alt+Shift+F7 . While in the Find tool window, you can also use the Preview area to check the places where the usages were found, to see a call hierarchy for methods, data flow for fields, and so on.
Inlay hints are special markers that appear in the editor and provide you with additional information about your code, like the names of the parameters that a called method expects. Other types of hints inform you about annotations, method parameters, usages, and so on (depending on the language).
It is a parameter name hint. These can be disabled for that constructor with an intention (AltEnter) on the parameter itself or in Settings | Editor | General | Appearance. The color of the hint can be changed in Settings | Editor | Colors & Fonts | Language Defaults | Inline parameter hint.
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