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[](https://githubrepo.cloud/repo/google/j2cl?utm_source=readme_badge) [](https://githubrepo.cloud/repo/google/j2cl?utm_source=readme_badge) [](https://githubrepo.cloud/repo/google/j2cl?utm_source=readme_badge)Momentum
+35
STARS · LAST 30 DAYS
1
PER DAY
#286
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +35 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
j2cl gained 35 stars in the last 30 days, about 1 a day, and now has 1.4K. It is about 9 years old and has averaged roughly 153 stars a year. It ranks #286 among Java repositories and #3,592 across all languages on GitHubRepo.
Trending Record
2
DAYS ON TRENDING
#4185
BEST RANK
Oct 2, 2026
FIRST APPEARANCE
Active
STATUS TODAY
j2cl has maintained a continuous presence across global trending indexes, peaking at #4185. Below is the 30-day activity profile:
💡 Overview
j2cl is an open-source project written in Java: Java to Closure JavaScript transpiler.
Engineered for speed, consistency, and developer ease, it solves common hurdles in compiler, gwt, j2cl. 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/j2cl.git
cd j2cl⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
j2cl 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 j2cl 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 Apache-2.0 license.
🚀 Getting Started
Install j2cl using your package manager: `git clone https://github.com/google/j2cl.git`
Initialize your project workspace or configuration file for j2cl.
Import j2cl into your codebase or invoke it directly from your terminal.
Execute your test suite or run `j2cl --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/j2cl is currently ranked #3,592 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #3,586 | microsoft/waza | Go | ★ 1.4K | Compare ↗ |
| #3,586 | hyperledger-solang/solang | Rust | ★ 1.4K | Compare ↗ |
| #3,586 | soveran/ohm | Ruby | ★ 1.4K | Compare ↗ |
| #3,586 | sporkrb/spork | Ruby | ★ 1.4K | Compare ↗ |
| #3,591 | binarylogic/searchlogic | Ruby | ★ 1.4K | Compare ↗ |
| #3,592 | google/j2cl This Project | Java | ★ 1.4K | |
| #3,592 | microsoft/mxc | Rust | ★ 1.4K | Compare ↗ |
| #3,592 | Wurst-Imperium/Wurst7 | Java | ★ 1.4K | Compare ↗ |
| #3,595 | sdsykes/fastimage | Ruby | ★ 1.4K | Compare ↗ |
| #3,595 | open-telemetry/opentelemetry-cpp | C++ | ★ 1.4K | Compare ↗ |
| #3,595 | vicanso/pingap | Rust | ★ 1.4K | Compare ↗ |
Frequently Asked Questions
What does j2cl do? +
Java to Closure JavaScript transpiler
What language is j2cl written in? +
The primary language is Java. Topics include: compiler, gwt, j2cl, java, javascript.
Is j2cl actively maintained? +
Yes, the last recorded push was on Oct 2, 2026 with 31 open issues being tracked.
How many stars does j2cl have? +
j2cl has 1,381 stars and 161 forks on GitHub.
How does j2cl rank among GitHub repositories? +
With 1,381 stars, google/j2cl is ranked #3,592 globally across all repositories tracked on GitHubRepo and #286 among Java projects.
What license is j2cl distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
