Java Recipes
Java + SQL, runnable code
Free · In-App Purchases
Over 570 examples with explanations: Java and SQL. Over 320 of them free, and code runs right in the app with the output shown underneath.
A reference of everyday Java, from strings and collections to threading and design patterns. Every example comes with an explanation, and most of them run.
• 22 sections: simple types, arrays and collections, classes, interfaces and generics, functions and lambdas, files, serialization, exceptions, regular expressions, threading, databases, patterns.
• Run in the app: the example really executes and the output appears under the code. Needs an internet connection.
• What changed in new versions: 8 sections from Java 9 to 21, with "before" and "after" code side by side.
• Keyword and function reference: 160 articles, fully open with no daily counter.
• SQL alongside: over 200 queries against a live practice database - JOIN, GROUP BY, subqueries, data types.
• Edit examples and add your own - they stay in the app and are always at hand.
• Search runs over the code itself, not just the titles: remember a fragment and you will find the example.
• Everything except running works offline. No account needed.
WHAT THE FREE VERSION INCLUDES
12 runs and 12 edits a day - the counter resets every morning. The keyword reference is open without limits. Up to 5 examples of your own. Copying in the free app is blocked after five attempts.
The full version opens every example, removes the daily limits and raises running to 30 launches a day. One purchase, no subscription.
Made by a developer for developers. In development since 2015.
Ratings & Reviews
• Run code right in the app - Java executes and the output is shown under the example.
• A "What changed in new versions" section: what arrived from Java 9 to 21.
• The keyword and function reference is now a section of its own, with search.
• Your own examples: add your code and keep it in the app.
The developer, Fedor Obraztsov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 7.5 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later.
- iPhone
- Languages
English and 14 more
- English, Arabic, French, German, Hebrew, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full version 2,99 €
- Java Samples 0,99 €
- SQL queries 0,99 €
- Unlock the paid topics 0,99 €
- Оperations with example 0,99 €
- Provider
Fedor Obraztsov
- Fedor Obraztsov has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © Fedor Obraztsov