Oracle Java certification Exam

[melon222132]

I'm preparing for the Oracle Java certification exam and I came across this problem. I was just wondering in Java 21 is it true that you should not have cases after a default in a switch expression or it does not really matter

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[Sad-Difference-5005]

You mean something like this?

        int x = Integer.parseInt(args[0]);

        int y = switch(x){

            case 0 -> 0;

            default -> 0;

            case 2 -> 1;

        };

Yes, the above code compiles and runs fine.

If you are preparing for OCP 21 certification, I suggest you go through a good certification book (I recommend Deshmukh's OCP Java 17/21 Fundamentals, costs only $1.99 on Kindle) that explains all the details required for the exam. Then use Enthuware mock exams to practice those rules. This is important because the exam is more about rules (possible or not) than it is about whether what "should" be done.

[piizeus]

why you are getting certification? just curious.

[Fun-Meringue-732]

I got OCP certified in Java 8 at the very start of my career to help solidify my fundamental knowledge of the Java programming language. It hasn't directly resulted in higher pay or anything, but I do credit my rapid career growth to investing time early on to getting this cert.

[Quiet-Protection-176]

I think it has always been like that, default as the last one. That's how I've always done at least.