Technical Interview Preparation
Ace your technical assessments at top-tier product companies and global enterprise firms.
Core Java Fundamentals
Master the basics that every interviewer expects you to know by heart.
Q: What is the difference between JDK, JRE, and JVM?
A: JDK is the full development toolkit. JRE is the environment required to run Java applications. JVM is the virtual machine that actually executes the bytecode on the host machine.
Q: Explain OOP concepts with real-world examples.
A: The four pillars are Inheritance (reusing code), Polymorphism (one interface, many forms), Encapsulation (hiding data), and Abstraction (hiding complexity).
Spring Framework & Enterprise
Level up with advanced questions on dependency management and framework internals.
Q: What is Inversion of Control (IoC)?
A: It's a design principle where the control of object creation and lifecycle is transferred from the developer to the framework (the Spring Container).
Q: What is Dependency Injection (DI)?
A: A pattern where the container "injects" the dependencies (other beans) into a class at runtime, usually via constructor or setter injection.
Next Steps for Preparation
- Practice LeetCode (Easy/Medium) for data structures.
- Review your major phase projects and be ready to explain every architectural choice.
- Conduct mock interviews with peers or mentors.