Real-World Java Interview Questions for Mid-Level and Senior Devs
Free!
Minimum price
$19.99
Suggested price
Real-World Java Interview Questions for Mid-Level and Senior Devs
About the Book
About the Author
Table of Contents
- Introduction Chapter: The Real-World Interview Scenario
- Chapter 1: Java Fundamentals
- What are the key OOPS Concepts?
- Differences Between Errors and Exceptions
- What are the differences between overriding and overloading?
- What is the benefit of Try-with-Resources in Java?
- Dynamic vs Static Polymorphism in Java
- Java 8 Interfaces
- Abstract Class VS Interface: Key Differences
- Difference between the final, finally and finalize keywords:
- == vs .equals() in Java
- Does Java pass Values by Reference or by value?
- Chapter 2: Data Structures & Collections
- Data Structures: Sets vs. Lists
- When two objects are considered equal in a HashSet? Explain the equals() and hashCode() contract.
- How hashmap works internally?
- HashMap: hashCode() and equals() Contract
- How HashMap works in Java?
- When to Use ArrayList vs. LinkedList in Java?
- Chapter 3: Java Advanced Features
- Four Pillars of OOPs
- What Defines an an Immutable Class?
- What is a pure function?
- What are the main Concepts of a Stream in Java?
- What are annotations for metadata-driven development?
- Chapter 4: Memory Management & Concurrency
- What is Garbage Collection?
- What is Deadlock and How to Prevent It?
- What are the Differences Between Stack vs Heap Memory?
- How to Prevent Deadlocks?
- Classic Deadlock Example
- What is ThreadLocal?
- What are the main concepts from the JVM Garbage Collection?
- Deadlock and Avoidance Strategies
- How does HashMap work internally and how does it handle collisions?
- Deadlock: Understanding and Prevention
- Chapter 5: Frameworks & Architecture
- Design Patterns
- What is REST?
- What are the Difficulties in Developing a UI Framework?
- 10 Difficulties in Developing an API Framework
- HTTP Methods (GET, POST, PUT, PATCH, DELETE)
- POST vs PUT
- Explain Singleton and Builder
- How is Spring Boot Different from Spring?
- What is SOLID Principle in Software Development?
- What are the main reasons for using microservices?
- Chapter 6: Testing Essentials: Fundamentals to Advanced Techniques
- Different Types of Functional Tests
- What is the Difference Between Sanity and Regression Testing?
- What are the Components of Test plan and test strategy?
- What is BDD and What Are Its Advantages and Disadvantages?
- What is priority and severity in a bug report. Give an example for a bug which is high priority but not severe and vice versa?
- Testing techniques
- Types of performace testing
- Load Testing vs. Stress Testing
- How to check 3rd party libraries with random failure issue?
- How to Diagnose Random Failures?
- Diagnosing 3rd Party Library Random Failures
- Chapter 7: Database SQL
- What are the Differences Between INNER JOIN vs OUTER JOIN?
- What is Data Manipulation Language (DML)?
- Data Control Language (DCL)
- Transaction Control Language (TCL)
- How would you optimize a slow-performing SQL query? What steps would you take to diagnose and improve it?
- Describe the trade-offs between database normalization and denormalization. When would you choose one over the other?
- How do you handle database migration and schema evolution in production systems?
- Explain ACID properties and their importance in enterprise applications
- Chapter 8: Development Methodologies
- How Big Should a Software Development Team Be?
- Disadvantages of Agile
- What is Agile and What Are Its Main Benefits?
- Compare and contrast Scrum and Kanban. When would you choose one over the other?
- How do you handle changing requirements in the middle of a sprint? What approaches have you used to minimize disruption?
- What metrics do you find most valuable for measuring team productivity in an agile environment? How do you prevent metric-driven dysfunctions?
- How do you approach technical debt? What strategies have you used to manage and reduce it?
- What’s your approach to code reviews? How do you ensure they’re both thorough and constructive?
- Chapter 9: DevOps Continuous Delivery
- What is CI/CD and its advantages?
- What are the key components of a CI/CD pipeline?
- How do you implement blue-green deployments?
- What strategies would you use for database changes in a CI/CD pipeline?
- How would you handle secrets and sensitive configuration in a CI/CD pipeline?
- What strategies would you use for database changes in a CI/CD pipeline?
- How would you handle secrets and sensitive configuration in a CI/CD pipeline?
- Next Steps: Accelarate Your Java Career with Personalized Guidance
The Leanpub 60 Day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.
You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!
So, there's no reason not to click the Add to Cart button, is there?
See full terms...
Earn $8 on a $10 Purchase, and $16 on a $20 Purchase
We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earnedover $14 millionwriting, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
