www.corejavainterviewquestions.com presents a full practice Java phone interview (although the questions are valid for on-site interviews too). Includes java, technology and libraries, career and puzzler questions. Go to each page and answer the question before moving onto the next one. Ideally, record your answers as you go through for review. If you have any questions then email hello@corejavainterviewquestions.com. All of the answers can be found at www.corejavainterviewquestions.com and in Java Interview Bootcamp, available for purchase from www.javainterviewbootcamp.com. Bonus! Email your purchase receipt to hello@corejavainterviewquestions.com to receive a PDF answer sheet.

1. Example Java
Interview

2. How to use this
presentation

3. Each slide is a
new question.
Answer out loud
before going to
the next question.

4. The Questions are
mostly core Java,
but also include
soft skills and
brain teasers

5. For the extra
keen, record
yourself
answering so you
can go back and

6. This should take
about 30-45
minutes

7. START

8. What is Spring,
specifically spring-
core?

9. Can you explain
what Dependency
Injection and
Inversion of
Control are?

10. Why are they a
good thing?

11. Do you like or
dislike Spring?
Why?

12. Are there any
alternatives?

13. One of the things we
aim for, and that DI
helps with, is the
principles of Low
Coupling and High
Cohesion. What do

14. What does it
mean to favour
composition over
abstraction?

15. There are two
types of exception
in Java. What are
they? What's the
difference?

16. When you are
creating your
code, which type
of Exception do
you prefer to use

17. The creators of
C# chose not to
include checked
exceptions. Can
you think why? Do

18. Can you explain
to me what a
deadlock is?

19. How can we code
defensively to
reduce the
likelihood of
deadlock?

20. What does the
volatile keyword
mean?

21. What access
modifiers are
there in
Java? What is the
difference

22. What is the
difference
between an
ArrayList and a
LinkedList?

23. In what situation
would I favour one
over the other?
Why?

24. What is the
contract between
equals and
hashcode? Why is
it significant?

25. Please explain
how a HashMap is
implemented

26. What are the
implications if the
hashcode is
poorly
implemented?

27. Why do you want
to leave your
current role?

28. If you were to move to
working for
FirmOfYourDreams,
how would you
improve it? What
would you want to

29. Do you have any
examples where you
have brought your
passion for technology
outside of work into the
organisation?

30. If I have a 10 x 10 x 10
cube made up of 1 x 1
x 1 cubes and I paint
the outside bright
green, on how many
cubes are there paint?

31. Do you have any
questions for me about
the interview or role?

32. End
The answer to all of these
questions and more can be found
at
www.corejavainterviewquestion
s.com
or email
hello@corejavainterviewquestions.

33. www.javainterviewbootcamp.co
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