google-java-format
Reformats Java source code to comply with Google Java Style. (by google)
spotless
Keep your code spotless (by diffplug)
google-java-format | spotless | |
---|---|---|
25 | 12 | |
5,776 | 4,834 | |
1.0% | 2.2% | |
8.3 | 9.6 | |
15 days ago | 2 days ago | |
Java | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
google-java-format
Posts with mentions or reviews of google-java-format.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-03-20.
- Fitness Functions - O Check-up contínuo de seu Software
- Como Melhorar seu Código Java: 7 Boas Práticas e Padrões de Desenvolvimento
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Contribution Instructions: Formate Code and Linting
We had a list of suggested code formation tools, as my code was written in Java I decided to use suggested formatter GoogleJavaFormat. However, I didn't decide to pick suggested tool for Linter. I picked Checkstyle; for the reason, that SpotBugs wasn't available for JDK 22.
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Tutorial: Build a Java SDK based on OpenAPI Spec
google-java-format: A tool that reformats your code according to Google’s Java style, ensuring a clean, consistent codebase.
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How to automatically format Java code similar to Rust (rustfmt)?
The code block you pasted is not at all what the Google Java Format utility would do. Don't use VSCode to handle IntelliJ's job :P
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After a few attempts I'm officially a programmer :^)
Follow a style guide, doesn’t really matter which you choose, you’ll thank me later. This one will work automatically https://github.com/google/google-java-format
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For Contributors to my OpenSSG
Like Prettier and ESLint in Javascript, I needed to add Java formatting and linting tools. For formatting, I looked at google-java-format, codestyle, and spotless. Since I'm not using Java framework, I can only use plugin to format my code. Although google-java-format does not support configurability, I just chose to follow Google Java format as I believe they have most common language format standard. To use google-java-format in MacOS, go to IntelliJ IDEA -> Preference (Windows: File -> Setting) and search "plugin" menu. Then, find google-java-format using search bar. Now all you need to do is to install the plugin. I didn't have to enable it, I think it needs to be enabled in some cases. You can refer to the documentation. To format your code, go to Code menu and select Reformat code or Reformat file. It will format your code.
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Coding standards
I cloned a Maven plug-in that enforces Google code style guidelines (modifying a few things, like nesting depth): https://github.com/google/google-java-format
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I declare as "final" every single variable whose value doesn't change. I also use "this" every time that I'm referring to an attribute, even when there's no ambiguity in not using it
They follow a rectangle rule, which is easy to follow, but can lead to ugly formatting due to excessive indentation in nested statements (which are common using protobuffers). The dart formatter was a lot nicer, and considered human friendly style instead of blindly following the rectangle rule.
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Creating custom formatter for Java
I spent most of my development career writing simple CRUD applications, recently I read a fascinating article: http://journal.stuffwithstuff.com/2015/09/08/the-hardest-program-ive-ever-written/. It looks like a nice challenge to try creating such a tool. For sure I need first to understand how to build AST etc. I could reuse existing solutions like https://github.com/google/google-java-format, or eclipse fmt, but I would like to understand the whole process, to be able to debug all cases.
spotless
Posts with mentions or reviews of spotless.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-04-25.
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Spring Boot with Spotless and Git Pre-commit Hooks
Spotless Maven Plugin
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We Have Code Quality At Home: Open Source Java Code Quality Tools
Spotless is an open-source, multi-language, customizable code formatter for projects. It comes with a Maven Plugin that can be customized as needed.
- FLiPN-FLaNK Stack for March 6, 2023
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Programming Breakthroughs We Need
Some code formatters such as Spotless (https://github.com/diffplug/spotless/tree/main/plugin-gradle...) allow you to format code only in files that have changes against some designated branch such as `master`. So, you check out your feature branch, make changes, do some commits, and run spotless. Only the files which have some changes between your workspace and the master branch will be formatted. This allows you to gradually format the project as and when files would be changed anyways.
- What supporting tools (linting, style/formatting, etc) are you using nowadays?
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How does Apache ShardingSphere standardize and format code? We use Spotless
As a Top-Level Apache open source project, ShardingSphere has 400 contributors as of today. Since most developers do not have the same coding style, it is not easy to standardize the project’s overall code format in a GitHub open collaboration model. To solve this issue, ShardingSphere uses Spotless to unify code formatting.
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Use semantic indenting
But please just use an code formatter like spotless. Or better yet set it as a pre commit hook. You will thank yourself later, and so will all of your coworkers.
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Zero Config Code Formatter?
I use Spotless but it’s not as opiniotated as Prettier or Black
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The obligatory braces and if/else questions
I use Spotless and it works quite well, but there are many other options. Also good IDEs can reformat your code.
- Java Cheatsheet to refresh the basic concepts of Java
What are some alternatives?
When comparing google-java-format and spotless you can also consider the following projects:
palantir-java-format - A modern, lambda-friendly, 120 character Java formatter.
Checkstyle - Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.
spring-javaformat
formatter-maven-plugin - Formatter Maven Plugin
prettier - Prettier is an opinionated code formatter.