CS++ Java IDE

Freemium#11 of 23 in Java IDEs

CS++ Java IDE: A focused AP CSA workspace with auto-testing, practice tools, and classroom collaboration. Ranked #11 of 23 in Java IDEs by our editors (7.1/10); pricing: Free plan; best for AP Computer Science classroom Java work.

7.1/10Editor score

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CS++ Java IDE7.1 Visit CS++

At a glance

Editor score
7.1 / 10
Pricing
Free plan
Best for
AP Computer Science classroom Java work
Free plan
Yes
Paid from
$299/yr
Supported operating systems
web, Windows, macOS, iOS
Founded
2018
Facts checked
20 Sep 2026

Where it wins
- Runs and auto-tests AP CSA Java in a browser
- Supports collaboration, shareable code, and optional cloud saving
- Includes rubric-based free-response practice and AI feedback
Where it doesn't
- Uses a documented Java subset rather than full Java SE
- Excludes lambdas, streams, threads, and file writing
- Advanced education licenses require annual payments

Our verdict on CS++ Java IDE

CS++ Java IDE is a browser-based Java editor, interpreter, and auto-testing environment for AP Computer Science A students, beginners, and classroom instruction. It supports core AP CSA constructs, selected collections and generic classes, shareable starter-code and example links, optional cloud saving, and live collaborative editing. Because it runs in a browser across web, Windows, macOS, and iOS, it fits classrooms using Chromebooks, iPads, phones, Macs, or Windows PCs. The documented environment does not require a JDK, plugin, or download.

The published plans cover individual learners and schools. The Free plan includes all lessons with an account, the browser-based IDE, and the first mock exam in each course. Student Membership costs $9.99 one time and adds lifetime access, mock exams and practice finals, full question banks, and AI feedback. Certification Prep costs $19.99 one time for lifetime certification-prep access. For institutions, Class costs $299 per classroom per year and includes a classroom license, teacher tools, and student access; Department costs $999 per year; District costs $1,999 per year.

Its strongest distinction is the combination of coding practice and AP CSA preparation: students can write, run, and auto-test programs, work through free-response exercises, and self-grade against rubrics. The narrow runtime is also the key boundary. CS++ Java IDE is designed around a Java subset and excludes lambdas, streams, threads, and file writing, so it suits AP CSA coursework more closely than broad professional Java development. Choose it for focused instruction, practice, and shared classroom work; choose a full Java SE IDE when those excluded language and runtime capabilities are required.

Questions about CS++ Java IDE

Does CS++ Java IDE have a free plan? Yes, there is a free plan; paid plans start at $299/yr (Class).

How much does CS++ Java IDE cost? CS++ Java IDE lists 5 paid plans; the lowest is Class at $299/yr.

What does CS++ Java IDE run on? Web, Windows, macOS and iOS. It runs in the cloud and as a browser extension.

Who is CS++ Java IDE built for? Solo users, small businesses, mid-market companies and enterprises (our editorial estimate).

Your product? Our editors can test CS++ Java IDE in depth and publish a review, labelled as paid · from $149/mo →

CS++ Java IDE pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 20 Sep 2026.

See plans on csplusplus.com

All 6 CS++ Java IDE plans and prices →

CS++ Java IDE fact sheet

Free plan	Yes
Paid from	$299/yr
Supported operating systems	web, Windows, macOS, iOS
Spring support	Not verified
Jakarta EE support	Not verified
JavaFX support	Not verified
Remote development	Not verified
Database tools	Not verified
Deployment	Cloud, Browser extension
Platforms	Web, Windows, macOS, iOS
Support	Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan (source)
Website	csplusplus.com
Facts checked	20 Sep 2026

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update