JavaForge: Java Interview

A no-nonsense Java interview prep app for backend engineers. Fully offline. Zero ads. Zero tracking. JavaForge bundles Blind 75, System Design, Core Java, the Spring ecosystem, and behavioral questions into a pocket coach you can pull out on the train, at lunch, the night before an onsite. WHAT YOU GET ▸ Blind 75 — 75 classic coding problems Organized by Array / Binary / DP / Graph / Interval / Linked List / Matrix / String / Tree / Heap. Each problem ships with: - Step-by-step approach (brute force → optimal → edge cases) - Complete Java solution (ready to read or rewrite from memory) - Time / Space complexity - Gotchas that catch most candidates ▸ System Design — high-frequency designs URL shortener, design Twitter, ride-hailing dispatch, messaging, recommendations — broken down into requirements → capacity estimation → high-level architecture → component details → trade-offs. ▸ Core Java — the three hot spots Collections, Concurrency, the JVM. HashMap internals, ConcurrentHashMap's evolution, the Java memory model, G1 vs CMS garbage collection. ▸ Spring · Boot · Data IoC, AOP, Spring Data JPA, Spring Security — concepts and high-frequency interview questions. ▸ Behavioral — 20 STAR-method questions Fully editable answer templates. Pre-polish your "Tell me about a time…" stories into STAR shape so you don't freeze on the day. WHY JAVAFORGE Fully offline — works on airplane mode Daily Review — surfaces what you flagged for review, tracks your streak Visible progress — every module shows how far you've come Privacy-first — no accounts, no network, no data collection Distraction-free — no ads, no social pressure, no gamification gimmicks Open the app. Hit Daily Review. Five minutes a day adds up.