Читать книгу OCP Oracle Certified Professional Java SE 11 Developer Practice Tests - Jeanne Boyarsky - Страница 20

Both of the authors are moderators at CodeRanch.com, a very large and active programming forum that is very friendly toward Java beginners. See the OCP Forum.

coderanch.com/f/24

If you don't understand a question, even after reading the explanation, feel free to ask about it in one of those forums. You'll get an answer from a knowledgeable Java programmer. It might even be one of us.

Good luck on the exam and happy studies!