Google · Java

Google Java interview questions

Practice Java questions specifically asked in Google interviews – ideal for online test preparation, technical rounds and final HR discussions.

Company: GoogleSubject: Java16 questions in this page

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Google · Java questions (16)

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1. Which is the most accurate stance regarding java.lang.Error?

Difficulty: EasyType: MCQTopic: Exceptions

Errors like OutOfMemoryError or StackOverflowError signal serious conditions. They are unchecked and not intended for normal recovery logic.

2. What does the Java Memory Model (JMM) primarily define?

Difficulty: EasyType: MCQ

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Google Java interview questions

Quick overview

Google · Java questions (16)

1. Which is the most accurate stance regarding java.lang.Error?

2. What does the Java Memory Model (JMM) primarily define?

Continue your preparation

3. Which pairing correctly matches reference type to its typical use?

4. Which pair best matches iterator behavior?

5. Explain the difference between an immutable collection and an unmodifiable view, and why it matters.

6. Why prefer ExecutorService over manually creating threads?

7. Why provide a custom ThreadFactory to an Executor?

8. Why separate the heap into young and old generations?

9. Which is TRUE about lambdas compared to anonymous inner classes?

10. List two good practices and two anti-patterns when using Optional in Java.

11. Calling run() directly on a Thread instance will:

12. What is the safest way to ensure text is read with a specific encoding?

13. Why is native Java serialization considered risky in modern systems, and what safer alternatives can you use?

14. Which pair correctly classifies exceptions in Java?

15. What is required for a type to be used in try-with-resources?

16. Pick the correct statement about keys used in HashMap or HashSet.

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Google Java interview questions

Quick overview

1. Which is the most accurate stance regarding java.lang.Error?

2. What does the Java Memory Model (JMM) primarily define?

Continue your preparation

3. Which pairing correctly matches reference type to its typical use?

4. Which pair best matches iterator behavior?

5. Explain the difference between an immutable collection and an unmodifiable view, and why it matters.

6. Why prefer ExecutorService over manually creating threads?

7. Why provide a custom ThreadFactory to an Executor?

8. Why separate the heap into young and old generations?

9. Which is TRUE about lambdas compared to anonymous inner classes?

10. List two good practices and two anti-patterns when using Optional in Java.

11. Calling run() directly on a Thread instance will:

12. What is the safest way to ensure text is read with a specific encoding?

13. Why is native Java serialization considered risky in modern systems, and what safer alternatives can you use?

14. Which pair correctly classifies exceptions in Java?

15. What is required for a type to be used in try-with-resources?

16. Pick the correct statement about keys used in HashMap or HashSet.

Master Interviews
Anywhere, Anytime