OCP Java SE 11 Developer Study Guide: Which of the following can removeIf() be called on? List/Map/S

[Patrick Kessels]

Among the set of flashcards of the OCP Java SE 11 Developer Study Guide is a card with the question "Which of the following can removeIf() be called on? List/Map/Set" (fc584704.JaSE11PrgISG.f1.070) The card states as the answer only "List".

The removeIf method is however implemented on the Collection interface and therefor also available for the Set implementation.  This card is not yet listed on the "https://www.selikoff.net/ocp11-complete/" page, but I assume the answer should be both List and Set, am I correct?

[Mike Simmons]

Yes, you can certainly call removeIf() on a Set, or any Collection, since Java 1.8.

[Jeanne Boyarsky]

I didn't know that. Learned something new today. Have a cow!

I've added it the errata for the Java 11 and Java 17 flashcards.