🌐
Google
google.github.io › styleguide › javaguide.html
Google Java Style Guide
A Java source file is described as being in Google Style if and only if it adheres to the rules herein. Like other programming style guides, the issues covered span not only aesthetic issues of formatting, but other types of conventions or coding standards as well.
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Reddit
reddit.com › r/java › google java coding standards
r/java on Reddit: Google Java Coding Standards
January 29, 2014 - Anyone here Hated Using Java but now Really Enjoys using it. ... The Google Style Guides project holds the C++, C#, Swift, Objective-C, Java, Python, R, Shell, HTML/CSS, JavaScript, TypeScript, AngularJS, Common Lisp, and Vimscript Style Guide.
Discussions

In search of modern Java Style guide
Any more I just use the intellj idea defaults. More on reddit.com
🌐 r/java
29
15
June 2, 2021
visual studio code - Google Styleguide Java Format for VSCode - Stack Overflow
Is there a good extension or proven methodology to automatically format Java code in VSCode to adhere to Google's Java Styleguide? Nothing from the list of links below seems to work for my set-up. ... More on stackoverflow.com
🌐 stackoverflow.com
How to configure Google Java Code Formatter in Intellij IDEA 17? - Stack Overflow
In the latest versions of IntelliJ IDEA it seems that it isn't possible to import code style files like intellij-java-google-style.xml. I would like use the Google Java Code Style in this IDE but it More on stackoverflow.com
🌐 stackoverflow.com
Making the Google Developers documentation style guide public
In typical Goolag fashion, it's very grand, but unfortunately it's also largely pointless because very few people can keep all these rules in their head for very long. Most of their rules don't really matter, and seem to be there to convince the reader that the author of the style guide is very learned in the subject of writing. As noted by another comment in this discussion, the most important thing about writing documentation is that it actually gets done in the first place. Accuracy is the second most important thing about writing documentation. Finally, we get to consistency. If a person/programmer/writer is actually serious about making their documentation consistent, then it is incredibly important to write as much of it at the same time as possible. This is absolutely the easiest way to make it all nice and consistent. If you write as much as possible at the same time, you're much more likely to use all the same phrases and nomenclature because they'll be active in your brain. If you write chunks of docs a few weeks apart, then you'll use whatever language is in your brain when you're writing, and the results will be far less consistent. Finally, if you're documenting code "class by class" then it's really hard to see how you documented something similar. You have to keep multiple files open, and hunt and peck through them. For this reason, it's REALLY wonderful if you can write the documentation in a single document so that you can see the other documentation nearby. Sources: Have documented enormous APIs. We had huge consistency improvements when a system was documented all at once rather than one piece at a time. We also had enormous improvements in speed and consistency when the documentation could be written in a single document rather than having to document all the classes in separate documents ( like in the headers above parameter lists ). EDITED TO ADD: class A { int count; float bias; void SetCount( const int count ); int GetCount() const; void SetBias( const float bias ); float GetBias() const; } If you have a large number of classes, a lot of context switching is required to write documentation. By context-switching, I mean opening other classes and figuring stuff out. That's why it's easier if you have a single document that has the following info. ( This document is created by a machine, and filled in a by a human. ) CLASS, A, MEMBER, int, count, MEMBER, float, bias, MEMBER, void, SetCount, PARAM, const int count, MEMBER, int, GetCount, MEMBER, void, SetBias, PARAM, const float bias, MEMBER, float, GetBias, CLASS, B, ... This makes it easy to see large amounts of the documentation at the same time, which makes it easy to ensure that things are done consistently. It also gives the developer/author a finish line since they can see what's undocumented and know how much more they have to do. It's also INCREDIBLY fast because you don't have to hunt for files, open files, and do searches all the time. More on reddit.com
🌐 r/programming
14
34
September 6, 2017
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GitHub
github.com › google › styleguide › blob › gh-pages › intellij-java-google-style.xml
styleguide/intellij-java-google-style.xml at gh-pages · google/styleguide
Style guides for Google-originated open-source projects - styleguide/intellij-java-google-style.xml at gh-pages · google/styleguide
Author: google
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GDS Way
gds-way.digital.cabinet-office.gov.uk › manuals › programming-languages › java.html
Java style guide - The GDS Way
The purpose of this style guide is to provide some conventions for working on Java code within GDS. The Google Java style guide is a good starting point.
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GitHub
github.com › google › google-java-format
GitHub - google/google-java-format: Reformats Java source code to comply with Google Java Style. · GitHub
August 14, 2026 - Drop it into the Eclipse drop-ins folder to activate the plugin. ... These that can be selected in "Window" > "Preferences" > "Java" > "Code Style" > "Formatter" > "Formatter Implementation".
Author: google
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DEV Community
dev.to › scottshipp › which-java-code-style-should-you-use-1k5a
Which Java code style should you use? - DEV Community
October 1, 2019 - If you use a build tool like Maven, there are some plug-ins like the fmt-maven-plugin to autoformat code when builds are ran (fmt-maven-plugin uses Google style). That may feel a bit extreme. You may be comfortable with just letting your IDE support this, in which case you would want to get a hold of an XML file for the code style settings that you can import into Eclipse or IntelliJ. It's really up to you. All that being said, you also probably want to grapple with how to approach Java 8+ features like lambdas and streams.
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Cornell Computer Science
cs.cornell.edu › courses › JavaAndDS › JavaStyle.html
Java style guide
Some of these guidelines are standard Java practice, while others are intended to develop good coding habits. When in doubt, choose the alternative that makes the code most obviously correct: "There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. The other way is to make it so complicated that there are no obvious deficiencies." - C.A.R. Hoare. ... We adhere to Java's naming conventions.
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JetBrains
plugins.jetbrains.com › plugin › 8527-google-java-format
google-java-format Plugin for JetBrains IDEs | JetBrains Marketplace
June 27, 2025 - Formats source code using the google-java-format tool. This plugin requires additional IDE configuration. For more information, read the documentation. What’s New: 1.36.1.1. Move settings page to Tools section. 1.36.1.0. Updated to use google-java-format 1.36.1. 1.35.0.0. Updated to use ...
Find elsewhere
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Domyassignments
domyassignments.com › home › introduction to google java coding style
Introduction to Google Java Coding Style
March 1, 2024 - Google’s coding standards for Java are not just about formatting details but embody a philosophy geared toward improving code clarity and the quality of programming. This style guide covers various aspects of Java programming, from naming conventions and file organization to rules for programming practices and documentation.
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Google
google.github.io › styleguide
Google Style Guides | Style guides for Google-originated open-source projects
Java Style Guide · JSON Style Guide · Markdown Style Guide · Objective-C Style Guide · Python Style Guide · R Style Guide · Shell Style Guide · Swift Style Guide · TypeScript Style Guide · Vim script Style Guide · This project also contains google-c-style.el, an Emacs settings file for Google style.
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GitHub
github.com › google › styleguide
GitHub - google/styleguide: Style guides for Google-originated open-source projects · GitHub
Java Style Guide · JSON Style Guide · Markdown Style Guide · Objective-C Style Guide · Python Style Guide · R Style Guide · Shell Style Guide · Swift Style Guide · TypeScript Style Guide · Vim script Style Guide · This project also contains google-c-style.el, an Emacs settings file for Google style.
Author: google
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Checkstyle
checkstyle.sourceforge.io › google_style.html
Google's Java Style Checkstyle Coverage
To adjust the default severity ... Google style configuration, set the following system property: ... For detailed guidance on severity levels, refer to the Severity Level. To configure this property, see the instructions for the CLI's -p option , or use the properties parameter in Ant, or set the Java system property ...
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CMU
web2.qatar.cmu.edu › cs › 15121 › resources › styleguide
15-121 Java Style Guide
This style guide is an adapted version of Google's Java Style Guide, released under the CC-By 3.0 License, which encourages you to share these documents.
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Studyunicorn
studyunicorn.com › blogs › mastering-google-java-coding-style-guide
Master Google Java Style Guide (2026-27 Update)
July 6, 2026 - Google's Java Style Guide offers an extensive collection of Java programming standards. The guide presents detailed recommendations for programming in different areas such as code formatting and naming rules along with best practices that enhance ...
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Medium
medium.com › swlh › configuring-google-style-guide-for-java-for-intellij-c727af4ef248
Configuring Google Style Guide for Java for IntelliJ | by Reed Odeneal | The Startup | Medium
November 16, 2020 - Launch IntelliJ and go to the Settings > Preferences… menu and expand the Code Style sub-menu underneath Editor. Here, you will see a list of supported languages. Select Java. Settings > Preferences… > Editor > Code Style > Java · IntelliJ ...
Top answer
1 of 7
12

I spent some time working on this same problem yesterday. The best and most reliable solution I was able to come up with was to install google-java-format into my path and then use the RunOnSave extension to invoke the binary for files with the .java extension.

Install emeraldwalk/vscode-runonsave:

$ code --install-extension emeraldwalk.RunOnSave

Install google-java-format for your system:

# Example using Homebrew on OS X
$ brew install google-java-format

Configure RunOnSave in Visual Studio Code settings:

{
  "emeraldwalk.runonsave": {
    "commands": [
      {
        "match": "\\.java$",
        "cmd": "google-java-format --replace ${file}"
      },
    ],
  },
}

I describe more of the methodology in this blog post.

2 of 7
2

google-java-format requires Java 16.0.1 SDK. You have to install it first.

There is an extension ilkka.google-java-format on the Visual Studio Code marketplace, but it is incompatible with current version.

I have to change it this way:

  1. Open file : C:\Documents and Settings\<USERNAME>\.vscode\extensions\ilkka.google-java-format-1.0.2\out\extension.js

  2. Update function provideDocumentRangeFormattingEdits this way:

    return new Promise((resolve, reject) => {
        let stdout = "";
        let stderr = "";
        let child = cp.spawn("java.exe",
            [
                "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
                "--add-exports", "jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED",
                "--add-exports", "jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED",
                "--add-exports", "jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED",
                "--add-exports", "jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED",
                "-jar",
                executablePath,
                "--lines",
                `${range.start.line}:${range.end.line}`,
                "-",
            ]);
    
  3. In Settings -> Preferences set executablePath to path to jar archive (google-java-format-1.10.0-all-deps.jar)

Enjoy

🌐
Google
google.github.io › styleguide › eclipse-java-google-style.xml
eclipse-java-google-style.xml
<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_javadoc_boundaries" value="true"/>
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Google Groups
groups.google.com › a › chromium.org › g › java › c › nA8U402YHyY
Styleguide verdict for "var" type inference
For those familiar with C++, this is the Java version of C++'s "auto" keyword. I ran a quick check in my local checkout and this compiles and runs fine on Android M and above. I see some usage of this keyword in our code base (codesearch link, one example), but I don't see it mentioned in our styleguide, the AOSP style guide...