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javaintellij-idealambda

Refactor lambda expression to use Comparator.comparingDouble

I have a the following lambda expression. My IDE (Intellij idea) tells me it should be replaced with Comparator.comparingDouble but I cannot find a way to do it.

List<javafx.stage.Screen> screenList = screens;

screenList.sort((screenA, screenB) -> Double.compare(
               screenA.getBounds().getMinX(), screenB.getBounds().getMinX()));

Is there a way to accomplish this with

screenList.sort(Comparator.comparingDouble(...));

or is this a false annotation from Intellij? Thank you in advance for your help!

Solution

  • You just need a function that converts Screen to double:

    screenList.sort(Comparator.comparingDouble(screen -> screen.getBounds().getMinX()));