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The Java Interview Handbook: 300+ Interview Questions
Master modern Java 25+ for technical interviews. Build scalable applications with core OOP, memory management, and modern concurrency like Project Loom.
4.7
65 lessons
15h
Created by C. H. Afzal
What's included
- 65 lessons across 16 modules
- 8 quizzes with instant feedback
- AI Tutor on every lesson
Why this course
- Ace Java Technical InterviewsDemonstrate proficiency in solving Java interview questions with confidence, showcasing your understanding of modern Java concepts.
- Build Scalable Java ApplicationsDesign and implement production-quality applications using advanced Java features, ensuring robustness and maintainability.
- Optimize Java PerformanceAnalyze and tune Java applications for memory management and performance, applying best practices for efficient resource use.
- Lead Java Development ProjectsManage and guide Java development efforts, utilizing concurrency and design patterns to enhance team productivity and code quality.
Who wrote it
C. H. Afzal
A veteran of the Silicon Valley, I have been fortunate enough to work at some of the iconic companies of present times including Microsoft, Netflix, Cloudera, and Oracle. I have a keen interest in algorithms, product design, finance, and problem-solving.
Please feel free to check out my linked-in profile for a detailed description of my professional experience.
Join 3.1 million developers at
What You'll Learn
- Master Java fundamentals including object-oriented programming, control flow, and memory management.
- Implement advanced Java concepts such as generics, collections, and exception handling.
- Apply modern concurrency techniques using multithreading, the executor framework, and Project Loom.
- Utilize the Stream API and Lambda expressions for functional programming in Java.
- Analyze and optimize Java applications for performance and memory management.
- Prepare for Java interviews by solving complex problems and understanding key design patterns.
Learning Roadmap
2.
Java Ecosystem
Java Ecosystem
Explore Java's ecosystem, JVM, flavors, and essential tools for effective development.
3.
Control Flow and Methods
Control Flow and Methods
4 Lessons
4 Lessons
Unpack the core of Java's method handling, including varargs, pass-by-value, and method overloading.
4.
Classes
Classes
5 Lessons
5 Lessons
Master Java's object-oriented principles, including classes, accessibility, constructors, and modifiers.
5.
Inheritance and Interfaces
Inheritance and Interfaces
5 Lessons
5 Lessons
Explore inheritance, polymorphism, interfaces, and their complexities in Java programming.
6.
Strings, Arrays, and Text Processing
Strings, Arrays, and Text Processing
3 Lessons
3 Lessons
Enhance data processing capabilities by mastering text manipulation, memory efficiency, and organizing structured information using arrays.
7.
Generics
Generics
5 Lessons
5 Lessons
Build on Java generics, covering type safety, raw types, bounded types, and wildcards.
8.
Collections Framework
Collections Framework
4 Lessons
4 Lessons
Master Java Collections Framework, focusing on data structures, iteration, and HashMap efficiency.
9.
Functional Programming
Functional Programming
6 Lessons
6 Lessons
Master Java's functional programming with lambda expressions, functional interfaces, and the Stream API.
10.
Exception Handling
Exception Handling
3 Lessons
3 Lessons
Master exception handling in Java to build robust, fault-tolerant applications.
11.
Memory Management
Memory Management
4 Lessons
4 Lessons
Master JVM memory management, garbage collection, and tuning for optimal Java performance.
12.
Multi-Threading
Multi-Threading
6 Lessons
6 Lessons
Sharpen your skills in Java multi-threading, thread safety, synchronization, and concurrency management.
13.
Reflection and Serialization
Reflection and Serialization
4 Lessons
4 Lessons
Explore Java reflection, class loaders, annotations, and serialization techniques for dynamic programming.
14.
Modern Concurrency and Async
Modern Concurrency and Async
4 Lessons
4 Lessons
Master Java concurrency with Executor Framework, CompletableFuture, atomic variables, and virtual threads.
15.
Java in Practice
Java in Practice
6 Lessons
6 Lessons
Master essential design patterns and best practices for effective Java programming.
Certificate of Completion
Showcase your accomplishment by sharing your certificate of completion.
Complete more lessons to unlock your certificate
About this course
WHY I WROTE THIS COURSE
Java continues to power enterprise software, cloud platforms, and large-scale backend systems, making it one of the most valuable programming languages to master. But modern Java has evolved far beyond the basics. This course teaches Java 25+ from the ground up while preparing you to confidently tackle today's Java interview questions and build production-quality applications.
I built this course from my experience spending seven years at Microsoft, before co-founding Educative. I repeatedly saw developers who understood Java syntax but struggled with concurrency, memory management, and software design. This course focuses on building the engineering mindset needed to succeed in both interviews and real-world development.
You'll progress from object-oriented programming, control flow, and memory management to generics, collections, exception handling, lambdas, and the Stream API. You'll then master advanced topics that frequently appear in Java interview questions, including multithreading, reflection, serialization, the Executor framework, Project Loom, and modern concurrency for scalable, thread-safe applications.
Thousands of engineers have used Educative courses to strengthen their programming skills and prepare for technical interviews. If you want to master Modern Java and confidently solve today's Java interview questions, this course is the ideal place to start.
ABOUT THE AUTHOR
C. H. Afzal
A veteran of the Silicon Valley, I have been fortunate enough to work at some of the iconic companies of present times including Microsoft, Netflix, Cloudera, and Oracle. I have a keen interest in algorithms, product design, finance, and problem-solving.
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