The subtleties of using a constructor to create an array

When exactly do you need to declare an exception?

For happy users, specify the locale correctly.

The subtleties of boxing and unboxing in streams

Where care is needed to get the results you expect from the Collectors class

The details of relying on specific operations from ExecutorService

Which loop construct would you use when looping on manual user input? Subtleties abound...

Two integers are instantiated with the Integer wrapper class. How do you compare their values correctly?

Try more intermediate and advanced test questions.

More intermediate and advanced test questions