Disable warning in IntelliJ for one line

Question

I have a Java code line where IntelliJ displays a warning. How do I silence the warning in that particular line, without affecting warnings displayed in other lines?

Answer 1

When compiling code using Kotlin language and IntelliJ here is a hint

Here is a link to the github source where the compiler warnings have their origin and where the default error messages output by the Kotlin compiler are defined

kotlin/compiler/frontend/src/org/jetbrains/kotlin/diagnostics/rendering/DefaultErrorMessages.java

If the compiler outputs "Variable ''{0}'' is never used" it origins from this line form DefaultErrorMessages.java

MAP.put(UNUSED_VARIABLE, "Variable ''{0}'' is never used", NAME);

To suppress the warning you can put a @Suppress() annotation before an unused variable in your code like this:

@Suppress("UNUSED_VARIABLE")
var y: Int = 3

So the trick if the IntelliJ does not help you pop up suggestions pressing Alt+ENTER at a highlighted expression is to look inside DefaultErrorMessages.java if you can find the error message and the keyword to supress a particular warning using @Suppress(..names)

This topic is not marked "Kotlin" but at least marked IntelliJ