128 lines
5.9 KiB
HTML
128 lines
5.9 KiB
HTML
<html>
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<head>
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<title>FindBugs™ Fact Sheet</title>
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<link rel="stylesheet" type="text/css" href="findbugs.css">
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</head>
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<body>
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<table width="100%"><tr>
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<td bgcolor="#b9b9fe" valign="top" align="left" width="20%">
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<table width="100%" cellspacing="0" border="0">
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<tr><td><a class="sidebar" href="index.html"><img src="umdFindbugs.png" alt="FindBugs"></a></td></tr>
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<tr><td> </td></tr>
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<tr><td><b>Docs and Info</b></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="findbugs2.html">FindBugs 2.0</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="demo.html">Demo and data</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="users.html">Users and supporters</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="http://findbugs.blogspot.com/">FindBugs blog</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="factSheet.html">Fact sheet</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="manual/index.html">Manual</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="ja/manual/index.html">Manual(ja/日本語)</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="FAQ.html">FAQ</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="bugDescriptions.html">Bug descriptions</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="mailingLists.html">Mailing lists</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="publications.html">Documents and Publications</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="links.html">Links</a></font></td></tr>
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<tr><td> </td></tr>
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<tr><td><a class="sidebar" href="downloads.html"><b>Downloads</b></a></td></tr>
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<tr><td> </td></tr>
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<tr><td><a class="sidebar" href="http://www.cafeshops.com/findbugs"><b>FindBugs Swag</b></a></td></tr>
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<tr><td> </td></tr>
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<tr><td><b>Development</b></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="http://sourceforge.net/tracker/?group_id=96405">Open bugs</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="reportingBugs.html">Reporting bugs</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="contributing.html">Contributing</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="team.html">Dev team</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="api/index.html">API</a> <a class="sidebar" href="api/overview-summary.html">[no frames]</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="Changes.html">Change log</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="http://sourceforge.net/projects/findbugs">SF project page</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="http://code.google.com/p/findbugs/source/browse/">Browse source</a></font></td></tr>
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<tr><td><font size="-1"><a class="sidebar" href="http://code.google.com/p/findbugs/source/list">Latest code changes</a></font></td></tr>
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</table>
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</td>
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<td align="left" valign="top">
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<h1>FindBugs™ Fact Sheet</h1>
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<p> FindBugs looks for bugs in Java programs. It is based
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on the concept of <i>bug patterns</i>. A bug pattern is a code
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idiom that is often an error. Bug patterns arise for a variety
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of reasons:
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</p>
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<ul>
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<li> Difficult language features
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<li> Misunderstood API methods
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<li> Misunderstood invariants when code is modified during maintenance
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<li> Garden variety mistakes: typos, use of the wrong boolean operator
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</ul>
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<p> FindBugs uses <i>static analysis</i> to inspect Java bytecode
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for occurrences of bug patterns.
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Static analysis means that FindBugs can find bugs by simply inspecting
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a program's code: executing the program is not necessary.
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This makes FindBugs very easy to use: in general, you should be
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able to use it to look for bugs in your code within a few minutes of downloading it.
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FindBugs works by analyzing Java bytecode (compiled class files),
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so you don't even need the program's source code to use it.
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Because its analysis is
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sometimes imprecise, FindBugs can report <i>false warnings</i>,
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which are warnings that do not indicate real errors.
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In practice, the rate of false warnings reported by FindBugs
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is less than 50%.
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</p>
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<p>
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FindBugs supports a plugin architecture allowing anyone to add new
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bug detectors. The <a href="publications.html">publications page</a>
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contains links to articles describing how to write a new detector
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for FindBugs. If you are familiar with Java bytecode
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you can write a new FindBugs detector in as little as a few minutes.
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</p>
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<p> FindBugs is free software, available under the terms of the
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<a href="http://www.gnu.org/copyleft/lesser.html">Lesser GNU Public License</a>.
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It is written in Java, and can be run with any virtual machine compatible
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with Sun's JDK 1.5. It can analyze programs written for any version
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of Java. FindBugs was originally developed by Bill Pugh and David Hovemeyer.
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It is maintained by Bill Pugh, and
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a <a href="team.html">team of volunteers</a>.
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</p>
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<p> FindBugs uses <a href="http://jakarta.apache.org/bcel/">BCEL</a> to
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analyze Java bytecode.
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As of version 1.1, FindBugs also supports bug detectors written using
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the <a href="http://asm.objectweb.org/">ASM</a> bytecode framework.
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FindBugs uses <a href="http://dom4j.org/">dom4j</a>
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for XML manipulation.
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</p>
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<hr> <p>
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<script language="JavaScript" type="text/javascript">
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<!---//hide script from old browsers
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document.write( "Last updated "+ document.lastModified + "." );
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//end hiding contents --->
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</script>
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<p> Send comments to <a class="sidebar" href="mailto:findbugs@cs.umd.edu">findbugs@cs.umd.edu</a>
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<p>
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<A href="http://sourceforge.net"><IMG src="http://sourceforge.net/sflogo.php?group_id=96405&type=5" width="210" height="62" border="0" alt="SourceForge.net Logo" /></A>
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</td>
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</tr></table>
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</body>
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</html>
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