A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead
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+103
STARS · LAST 30 DAYS
3
PER DAY
#128
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +21 | +103 | +270 |
| Per day | 3 | 3 | 3 |
| Forks gained | +2 | +7 | +19 |
NullAway gained 103 stars in the last 30 days, about 3 a day, and now has 4.1K. It is about 9 years old and has averaged roughly 457 stars a year. It ranks #128 among Java repositories and #1,817 across all languages on GitHubRepo.
Trending Record
2
DAYS ON TRENDING
#3201
BEST RANK
Oct 2, 2026
FIRST APPEARANCE
Active
STATUS TODAY
NullAway has maintained a continuous presence across global trending indexes, peaking at #3201. Below is the 30-day activity profile:
💡 Overview
NullAway is an open-source project written in Java: A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead.
Engineered for speed, consistency, and developer ease, it solves common hurdles in android, java, nullability. 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/uber/NullAway.git
cd NullAway⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
NullAway 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 NullAway 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 MIT license.
🚀 Getting Started
Install NullAway using your package manager: `git clone https://github.com/uber/NullAway.git`
Initialize your project workspace or configuration file for NullAway.
Import NullAway into your codebase or invoke it directly from your terminal.
Execute your test suite or run `NullAway --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
uber/NullAway is currently ranked #1,817 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
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|---|---|---|---|---|
| #1,812 | troessner/reek | Ruby | ★ 4.1K | Compare ↗ |
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| #1,816 | weavejester/compojure | Clojure | ★ 4.1K | Compare ↗ |
| #1,817 | uber/NullAway This Project | Java | ★ 4.1K | |
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Frequently Asked Questions
What does NullAway do? +
A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead
What language is NullAway written in? +
The primary language is Java. Topics include: android, java, nullability, nullability-analysis, static-analysis.
Is NullAway actively maintained? +
Yes, the last recorded push was on Oct 2, 2026 with 155 open issues being tracked.
How many stars does NullAway have? +
NullAway has 4,112 stars and 372 forks on GitHub.
How does NullAway rank among GitHub repositories? +
With 4,112 stars, uber/NullAway is ranked #1,817 globally across all repositories tracked on GitHubRepo and #128 among Java projects.
What license is NullAway distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
