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Java practice questions with answers

100 questions arranged into 7 focused exercises. Work in learning mode to review answers and explanations, or choose timed mode before starting.

Read theory

Review Java types, control flow, methods and object-oriented concepts, then practise questions with explanations. Build language foundations for technical placement tests and Java interview preparation.

Exercise 1Questions 1–15

Exercise 1

15 questions · about 18 minutes

4 easy · 4 medium · 7 hard
15 MCQ
Not attemptedStart
Exercise 2Questions 16–30

Exercise 2

15 questions · about 18 minutes

7 easy · 4 medium · 4 hard
15 MCQ
Not attemptedStart
Exercise 3Questions 31–45

Exercise 3

15 questions · about 18 minutes

3 easy · 7 medium · 5 hard
15 MCQ
Not attemptedStart
Exercise 4Questions 46–60

Exercise 4

15 questions · about 18 minutes

2 easy · 7 medium · 6 hard
15 MCQ
Not attemptedStart
Exercise 5Questions 61–75

Exercise 5

15 questions · about 18 minutes

6 easy · 7 medium · 2 hard
15 MCQ
Not attemptedStart
Exercise 6Questions 76–90

Exercise 6

15 questions · about 18 minutes

5 easy · 7 medium · 3 hard
15 MCQ
Not attemptedStart
Exercise 7Questions 91–100

Exercise 7

10 questions · about 12 minutes

3 easy · 4 medium · 3 hard
10 MCQ
Not attemptedStart