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Java Developer
End-to-end Java interview prep across core Java and Spring Boot — language and JVM fundamentals, collections, concurrency, and building, securing, and shipping Spring Boot applications.
2 stacks174 questions~23h of reading
This role bundles the following technologies. Each links to its dedicated stack, where questions can grow independently.
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Java
90 questions · ~12h
Java Fundamentals & the JVM
12 questions
Object-Oriented Programming in Java
12 questions
Collections Framework
12 questions
Generics
6 questions
Exception Handling
7 questions
Multithreading & Concurrency
13 questions
Memory Management & Garbage Collection
7 questions
Java 8+ & Functional Programming
10 questions
I/O, Strings & Serialization
6 questions
General & Behavioral
5 questions
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Spring Boot
84 questions · ~11h
Spring Core & Dependency Injection
12 questions
Spring Boot Fundamentals & Auto-Configuration
10 questions
Spring MVC & Building REST APIs
11 questions
Spring Data & Persistence
10 questions
Spring Security
9 questions
Testing Spring Boot Applications
8 questions
Microservices & Spring Cloud
7 questions
Messaging, Async & Scheduling
6 questions
Observability & Production Readiness
6 questions
General & Behavioral
5 questions