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   <title>Coding Standards</title><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><meta name="keywords" content="jetty, servlet, servlet-api, cometd, http, websocket, eclipse, maven, java, server, software"><link rel="home" href="index.html" title="Jetty"><link rel="up" href="advanced-contributing.html" title="Chapter&nbsp;35.&nbsp;Contributing to Jetty"><link rel="prev" href="contributing-source-build.html" title="Source Control and Building"><link rel="next" href="bugs.html" title="Issues, Features, and Bugs"><link xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" rel="shortcut icon" href="images/favicon.ico"><link rel="stylesheet" href="css/highlighter/foundation.css"><script src="js/highlight.pack.js"></script><script>
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            Version: 9.3.28.v20191105</span></td><td style="width: 50%"></td></tr></table><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Coding Standards</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="contributing-source-build.html"><i class="fa fa-chevron-left" aria-hidden="true"></i> Previous</a>&nbsp;</td><th width="60%" align="center">Chapter&nbsp;35.&nbsp;Contributing to Jetty<br><a accesskey="p" href="index.html"><i class="fa fa-home" aria-hidden="true"></i> Home</a></th><td width="20%" align="right">&nbsp;<a accesskey="n" href="bugs.html">Next <i class="fa fa-chevron-right" aria-hidden="true"></i></a></td></tr></table><hr></div><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="jetty-callout"><h5 class="callout"><a href="http://www.webtide.com/">Contact the core Jetty developers at
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      </p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="coding-standards"></a>Coding Standards</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="section"><a href="coding-standards.html#_code_formatting">Code Formatting</a></span></dt><dt><span class="section"><a href="coding-standards.html#_code_templates">Code Templates</a></span></dt><dt><span class="section"><a href="coding-standards.html#_code_conventions">Code Conventions</a></span></dt></dl></div><p>Jetty uses number of conventions for its source code.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_code_formatting"></a>Code Formatting</h3></div></div></div><p>Jetty uses the code formatting the following project specifies.</p><p><a class="link" href="http://git.eclipse.org/c/jetty/org.eclipse.jetty.admin.git/tree/jetty-eclipse-java-format.xml" target="_top">Eclipse Java Formatting</a></p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_code_templates"></a>Code Templates</h3></div></div></div><p>Jetty specifies the following code templates for use by the project developers.</p><p><a class="link" href="http://git.eclipse.org/c/jetty/org.eclipse.jetty.admin.git/tree/jetty-eclipse-codetemplates.xml" target="_top">Eclipse Code Templates</a></p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="_code_conventions"></a>Code Conventions</h3></div></div></div><p>The following is an example of the Java formatting and naming styles to apply to Jetty:</p><pre xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times"><code>import some.exact.ClassName;      // GOOD
import some.wildcard.package.*;   // BAD!

package org.always.have.a.package;

/* --------------------------------------------------------- */
/** Always have some javadoc
 */
class MyClassName
{
    // indent by 4 spaces.
    // use spaced to indent
    // The code must format OK with default tabsize of 8.

    private static final int ALL_CAPS_FOR_PUBLIC_CONSTANTS=1;

    // Field prefixed with __ for static of _ for normal fields.
    // This convention is no longer mandatory, but any given
    // class should either consistently use this style or not.
    private static String __staticField;
    private Object _privateField;


    // use getters and setters rather than public fields.
    public void setPrivateField(Object privateField)
    {
        _privateField=privateField;
    }

    public Object getPrivateField()
    {
        return _privateField;
    }

    public void doSomething()
        throws SomeException
    {
        Object local_variable = _privateField;
        if (local_variable==null)
        {
             // do Something
        }
    }
}</code></pre></div></div><script type="text/javascript">
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