A Java to iOS Objective-C translation tool and runtime.
Star History
Momentum
+151
STARS · LAST 30 DAYS
5
PER DAY
#81
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +35 | +151 | +450 |
| Per day | 5 | 5 | 5 |
| Forks gained | +5 | +20 | +50 |
j2objc gained 151 stars in the last 30 days, about 5 a day, and now has 6K. It is about 13 years old and has averaged roughly 464 stars a year. It ranks #81 among Java repositories and #1,143 across all languages on GitHubRepo.
Trending Record
70
DAYS ON TRENDING
#100
BEST RANK
Jan 30, 2014
FIRST APPEARANCE
Active
STATUS TODAY
j2objc has maintained a continuous presence across global trending indexes, peaking at #100. Below is the 30-day activity profile:
💡 Overview
j2objc is an open-source project written in Java: A Java to iOS Objective-C translation tool and runtime.
Engineered for speed, consistency, and developer ease, it solves common hurdles in Java. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in Java for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/google/j2objc.git
cd j2objc⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
j2objc coordinates its core functionality through a modular Java pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed j2objc into Java backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open NOASSERTION license.
🚀 Getting Started
Install j2objc using your package manager: `git clone https://github.com/google/j2objc.git`
Initialize your project workspace or configuration file for j2objc.
Import j2objc into your codebase or invoke it directly from your terminal.
Execute your test suite or run `j2objc --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
google/j2objc is currently ranked #1,143 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #1,138 | css-doodle/css-doodle | JavaScript | ★ 6.1K | Compare ↗ |
| #1,139 | FlorianBruniaux/claude-code-ultimate-guide | Python | ★ 6.1K | Compare ↗ |
| #1,140 | cockroachdb/pebble | Go | ★ 6K | Compare ↗ |
| #1,141 | github/markup | Ruby | ★ 6K | Compare ↗ |
| #1,141 | robbietilton/Compositor | Swift | ★ 6K | Compare ↗ |
| #1,143 | google/j2objc This Project | Java | ★ 6K | |
| #1,143 | rainmeter/rainmeter | C++ | ★ 6K | Compare ↗ |
| #1,144 | Respect/Validation | PHP | ★ 6K | Compare ↗ |
| #1,144 | kserve/kserve | Go | ★ 6K | Compare ↗ |
| #1,144 | loopx-project/loopx | Python | ★ 6K | Compare ↗ |
| #1,147 | ZSeven-W/openpencil | Rust | ★ 6K | Compare ↗ |
Frequently Asked Questions
What does j2objc do? +
A Java to iOS Objective-C translation tool and runtime.
What language is j2objc written in? +
The primary language is Java. Topics include: software.
Is j2objc actively maintained? +
Yes, the last recorded push was on Sep 25, 2026 with 155 open issues being tracked.
How many stars does j2objc have? +
j2objc has 6,038 stars and 999 forks on GitHub.
How does j2objc rank among GitHub repositories? +
With 6,038 stars, google/j2objc is ranked #1,143 globally across all repositories tracked on GitHubRepo and #81 among Java projects.
What license is j2objc distributed under? +
The repository reports a NOASSERTION license. Always verify the repository LICENSE file for legal terms.
