Item
¥0CNY
Screenshots come from the App Store listing. They are shown at full aspect ratio, never cropped. Click to enlarge.
From the App Store SourceTHE JAVA REFERENCE FOR DEVELOPERS WHO ACTUALLY SHIP Every Java feature from Java 8 through Java 25 — 70+ features — in one sharp, no-fluff app. Built for backend engineers, interview preppers, and anyone tired of grepping release notes. WHAT'S INSIDE - 70+ features covering Java 8 through Java 25 (LTS) - Lambda, Streams, Optional and every Java 8 fundamental - Records, Sealed Classes, Pattern Matching — the modern ADT trio - Virtual Threads, Structured Concurrency, Scoped Values - Preview and Incubator features clearly marked, with a status legend - Direct links to the official JEP and Oracle docs for every feature LEARN MODE - Flashcards: flip-card study across every feature - Quiz: 10/15/20-question rounds with version, status, JEP-match, and hand-written trap questions. Tracks high score and best streak. - Interview Prep: deep prep content for 22 of the most-asked Java interview topics. Every topic breaks into why it matters, real question phrasings, key points, common traps, follow-up escalations, and a whiteboard-ready code snippet. DAILY USE - Filter by version (Java 8 to 25, LTS, or Experimental) - Category filter and full-text search - Bookmarks: save any feature for later - Changelog: browse what shipped in each version range - Share card: export any feature as an image for your team chat - Reading progress tracker CODE EXAMPLES (PRO) Unlock syntax-highlighted code examples for every feature with a single one-time purchase. No subscription. DESIGN Built with a brutalist, high-contrast aesthetic — no rounded corners, no gradients, just dense information and sharp borders. Designed to be glanceable at a glance and deep when you need it. Written in native SwiftUI. Fast. Offline. No tracking.
The developer is YIFENG JIA, and the app identifier is com.kevinjia.app.javafeatures.
It was first released on 2026-04-17, according to our own database record.
Every number in these answers comes from the data shown above on this page.