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<!DOCTYPE html>

<head>

<title>List of API Differences :: Revapi</title>

</head>

<a class="navbar-item" href="https://revapi.org">Revapi</a>

</div>

</button>

</div>

<a class="navbar-item" href="../../revapi-site/main/index.html/../downloads.html">Downloads</a>

<a class="navbar-item" href="https://diff.revapi.org">Online Check</a>

</div>

</nav>

</header>

<a class="nav-link" href="../../revapi-site/main/getting-started.html">Getting Started</a>

</li>

</li>

<a class="nav-link" href="../../revapi/0.15.1/architecture.html">Architecture</a>

</li>

<a class="nav-link" href="../../revapi/0.15.1/configuration.html">Configuration</a>

</li>

<a class="nav-link" href="../../revapi/0.15.1/extending-revapi.html">Extending Revapi</a>

</li>

<a class="nav-link" href="../../revapi-site/main/building.html">Building</a>

</li>

</ul>

</li>

</ul>

<hr/>

<i class="nav-text">Modules</i>

</a>

</li>

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</li>

<span class="nav-text">Basic Features</span>

</a>

</li>

</a>

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<span class="nav-text">File Reporter Base</span>

</a>

</li>

<span class="nav-text">Jackson Analyzer Base</span>

</a>

</li>

<span class="nav-text">Java Analyzer</span>

</a>

<a class="nav-link" href="differences.html">List of API Differences</a>

</li>

<a class="nav-link" href="configuration.html">Configuration</a>

</li>

<a class="nav-link" href="annotation-based-filter.html">Filtering based on annotations</a>

</li>

<a class="nav-link" href="non-jar-archives.html">Handling Other Types of Archives</a>

</li>

<a class="nav-link" href="element-matching.html">Matching and Filtering Java Elements</a>

</li>

<a class="nav-link" href="_attachments/apidocs/index.html">Javadoc</a>

</li>

</ul>

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<span class="nav-text">Java Analyzer SPI</span>

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</a>

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<span class="nav-text">Maven Plugin</span>

</a>

</li>

<span class="nav-text">Text Reporter</span>

</a>

</li>

<span class="nav-text">YAML Analyzer</span>

</a>

</li>

</ul>

</nav>

</div>

<span class="title">Java Analyzer</span>

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</ul>

</li>

<span class="title">Basic Features</span>

</li>

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</li>

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</ul>

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<span class="title">File Reporter Base</span>

</li>

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</ul>

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<span class="title">Jackson Analyzer Base</span>

</li>

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<span class="title">Java Analyzer</span>

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<span class="title">Revapi Site</span>

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<span class="title">Text Reporter</span>

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</div>

</aside>

</div>

<ul>

<li><a href="index.html">Java Analyzer</a></li>

<li><a href="differences.html">List of API Differences</a></li>

</ul>

</nav>

Version:

0.23.2

</button>

0.28.4

</a>

0.28.3

</a>

0.28.2

</a>

0.28.1

</a>

0.28.0

</a>

0.27.1

</a>

0.27.0

</a>

0.26.1

</a>

0.26.0

</a>

0.25.0

</a>

0.24.4

</a>

0.24.3

</a>

0.24.2

</a>

0.24.1

</a>

0.24.0

</a>

0.23.2

</a>

0.23.1

</a>

0.23.0

</a>

0.22.1

</a>

0.22.0

</a>

</div>

</div>

</aside>

<h1 class="page">List of API Differences</h1>

<p>When Revapi reports the found API problems it needs to pinpoint the element it is "talking about".

Therefore it assigns a one-line representation to each API element to identify it. It tries to follow the conventions of

Java syntax but needs to go beyond it to express additional information.</p>

</div>

<p>First, let’s go through some simple examples.</p>

</div>

<pre>class com.example.MyClass</pre>

</div>

<p>This somewhat obviously refers to a class called <code>MyClass</code> in the <code>com.example</code> package.</p>

</div>

<pre>class com.example.MyGenericClass<T extends java.lang.Number></pre>

</div>

<p>This again refers to the class but you can see that Revapi also includes the type parameters in the class name. Note

that the bounds of the type parameters are specified using fully qualified class names.</p>

</div>

<pre>interface com.example.MyInterface</pre>

</div>

<p>Here we see that different kinds of classes are distinguished. Revapi uses <code>@interface</code> for annotation types, <code>enum</code> for

enumerations, <code>interface</code> for interfaces and <code>class</code> for ordinary classes.</p>

</div>

<pre>missing-class com.example.Whoops</pre>

</div>

<p>What’s this? Here, Revapi tries to convey that the class in question wasn’t found anywhere on the classpath.</p>

</div>

<pre>method java.lang.String com.example.MyClass::myMethod(int, long)</pre>

</div>

<p>If you are familiar with the method reference syntax in Java 8, you may guess that the above refers to a method called

<code>myMethod</code> declared in the <code>com.example.MyClass</code> class that returns a <code>java.lang.String</code> and accepts an <code>int</code> as its

first argument and a <code>long</code> as its second argument. As with classes, the type mentioned in the method identifier may

include the type parameters. The method identifier also includes the <code>throws</code> declaration if present on the method.</p>

</div>

<pre>parameter java.lang.String com.example.MyClass::myMethod(int, ===long===)</pre>

</div>

<p>If Revapi needs to "talk" about a single parameter of a method, it encloses the parameter in <code>===</code>. The above therefore

identifies the second parameter of the method <code>myMethod</code>.</p>

</div>

<pre>field com.example.MyClass.myField</pre>

</div>

<p>Quite intuitively, the above identifies the field called <code>myField</code> in the class <code>com.example.MyClass</code>.</p>

</div>

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