Quiz Yourself: One-Dimensional Arrays (Intermediate)

The subtleties of using a constructor to create an array

Quiz Yourself: Custom Exceptions (Advanced)

When exactly do you need to declare an exception?

Quiz Yourself: Read and Set the Locale (Advanced)

For happy users, specify the locale correctly.

Quiz Yourself: Functional Interfaces (Advanced)

The subtleties of boxing and unboxing in streams

Quiz Yourself: Using Collectors (Advanced)

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

Quiz Yourself: Threads and Executors (Advanced)

The details of relying on specific operations from ExecutorService

Quiz Yourself: Comparing Loop Constructs (Intermediate)

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

Quiz Yourself: Wrapper Classes (Intermediate)

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

Quiz Yourself

Try more intermediate and advanced test questions.

Quiz Yourself

More intermediate and advanced test questions