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Junit test for model class

This question is about best practice rather than any issues or problem. I have a service method below that I am trying to test. myDAO is DAO class that will be injected and has all database call code. And my Junit test case using mockito is Everything is fine and working. My main problem here is MyObject is a…

Javafx like Callback but without return

I’m looking for a standard Javafx or java interface (if it exists) that acts like a Callback, except that it does not return a value. The standard Callback from javafx.util package is as follows: This is useful when you need to return the value, but I don’t. I’ve looked into Callable<T&gt…

How does the SharedSecrets mechanism work?

jdk.internal.misc.SharedSecrets describes itself as: A repository of “shared secrets”, which are a mechanism for calling implementation-private methods in another package without using …

Why is package-protected method not visible in the same package?

Assume we have two packages p1 and p2 and classes p1.M1 extended by p2.M12 as follows: Let’s extend M12 with p2.B: This gives a compilation error as method1, being package-protected within p1 is not visible in p2. method2 is visible without problems. Now let’s extend p2.M12 with p1.A: Here I&#8217…

Does the stream.spliterator() close the stream?

Does the stream.spliterator() implicitly closes the stream, or there is a need to explicitly close it afterwards? At first glance, it seems that the .spliterator() method closes the stream, but without calling stream.close(). At least if I close it straight away after the .spliterator() method is invoked, it …