DevTrainer: тесты Java
Android app by pivnieCorp. Education · pivnieCorp
- Store rating
- Unknown
- Store rating count
- Unknown
- Download price
- Free to download
- In-app purchases
- Not listed in captured metadata
- Version
- 0.6.2
- Listing last refreshed
- 2026-09-18
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Store description excerpt
Preparing for a Java developer interview? Afraid you'll forget your theory during a technical interview or want to refresh your knowledge before looking for a new job? DevTrainer is a hardcore pocket-sized training tool for backend developers: 84 tests and nearly 3,000 questions actually asked in technical interviews. No fluff or "learning programming from scratch." Just a specialized knowledge assessment for those who want to confidently pass the technical screening and get an offer. Cover your gaps before the interview, not right during it! ⚙️ 9 TOPICS — JUST LIKE IN REAL INTERVIEWS • Java Core: OOP, String pool, equals/hashCode, exceptions, generics, Stream API • Collections: HashMap internals, ArrayList vs. LinkedList, fail-fast iterators • Multithreading: threads, synchronized/volatile, JMM, Executors, CompletableFuture • JVM and memory: Garbage Collector, Heap/Stack, memory leaks • Spring: DI/IoC, beans, Spring Boot, Data JPA/Hibernate, transactions, N+1 problem • SQL and databases: indexes, transaction isolation levels, JOINs • Testing: JUnit 5, Mockito, Testcontainers, TDD • System Design: scaling, caching, rebalancing, microservices • Patterns: SOLID, GoF, MVC/MVVM, CQRS, Saga 🎯 CHOOSE YOUR GRADE Each test has its own difficulty level: Junior, Middle, or Senior. Aiming for a middle level? Don't waste time on basic tests – test yourself right away with complex questions on architecture and frameworks' internals. 📊 ERROR REVIEW After each test, you'll receive a detailed analysis: what you answered incorrectly and why, with an explanation of the correct answer. An error in the simulator means one less question to fail in a real interview. The app is free. Install it, choose your grade, and see if you're ready for an offer today.
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