1<html><head> 2 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 3 <title>Chapter 9. Analysis Properties</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="index.html" title="FindBugs™ Manual"><link rel="up" href="index.html" title="FindBugs™ Manual"><link rel="prev" href="filter.html" title="Chapter 8. Filter Files"><link rel="next" href="annotations.html" title="Chapter 10. Annotations"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 9. Analysis Properties</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="filter.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="annotations.html">Next</a></td></tr></table><hr></div><div class="chapter" title="Chapter 9. Analysis Properties"><div class="titlepage"><div><div><h2 class="title"><a name="analysisprops"></a>Chapter 9. Analysis Properties</h2></div></div></div><p> 4<span class="application">FindBugs</span> allows several aspects of the analyses it performs to be 5customized. System properties are used to configure these options. 6This chapter describes the configurable analysis options. 7</p><p> 8The analysis options have two main purposes. First, they allow you 9to inform <span class="application">FindBugs</span> about the meaning of methods in your application, 10so that it can produce more accurate results, or produce fewer 11false warnings. Second, they allow you to configure the precision 12of the analysis performed. Reducing analysis precision can save 13memory and analysis time, at the expense of missing some real bugs, 14or producing more false warnings. 15</p><p> 16The analysis options are set using the <span class="command"><strong>-property</strong></span> 17command line option. For example: 18</p><pre class="screen"> 19<code class="prompt">$ </code><span class="command"><strong>findbugs -textui -property "cfg.noprune=true" <em class="replaceable"><code>myApp.jar</code></em></strong></span> 20</pre><p> 21</p><p> 22The list of configurable analysis properties is shown in 23<a class="xref" href="analysisprops.html#analysisproptable" title="Table 9.1. Configurable Analysis Properties">Table 9.1, “Configurable Analysis Properties”</a>. 24</p><div class="table"><a name="analysisproptable"></a><p class="title"><b>Table 9.1. Configurable Analysis Properties</b></p><div class="table-contents"><table summary="Configurable Analysis Properties" border="1"><colgroup><col><col><col></colgroup><thead><tr><th align="left">Property Name</th><th align="left">Value</th><th align="left">Meaning</th></tr></thead><tbody><tr><td align="left">findbugs.assertionmethods</td><td align="left">Comma-separated list of fully qualified method names: 25 e.g., "com.foo.MyClass.checkAssertion"</td><td align="left">This property specifies the names of methods that are used 26 to check program assertions. Specifying these methods allows 27 the null pointer dereference bug detector to avoid reporting 28 false warnings for values which are checked by assertion 29 methods.</td></tr><tr><td align="left">findbugs.de.comment</td><td align="left">true or false</td><td align="left">If true, the DroppedException detector scans source code 30 for empty catch blocks for a comment, and if one is found, does 31 not report a warning.</td></tr><tr><td align="left">findbugs.maskedfields.locals</td><td align="left">true or false</td><td align="left">If true, emit low priority warnings for local variables 32 which obscure fields. Default is false.</td></tr><tr><td align="left">findbugs.nullderef.assumensp</td><td align="left">true or false</td><td align="left">not used 33 (intention: If true, the null dereference detector assumes that any 34 reference value returned from a method or passed to a method 35 in a parameter might be null. Default is false. Note that 36 enabling this property will very likely cause a large number 37 of false warnings to be produced.)</td></tr><tr><td align="left">findbugs.refcomp.reportAll</td><td align="left">true or false</td><td align="left">If true, all suspicious reference comparisons 38 using the == and != operators are reported. If false, 39 only one such warning is issued per method. Default 40 is false.</td></tr><tr><td align="left">findbugs.sf.comment</td><td align="left">true or false</td><td align="left">If true, the SwitchFallthrough detector will only report 41 warnings for cases where the source code does not have a comment 42 containing the words "fall" or "nobreak". (An accurate source 43 path must be used for this feature to work correctly.) 44 This helps find cases where the switch fallthrough is likely 45 to be unintentional.</td></tr></tbody></table></div></div><br class="table-break"></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="filter.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="annotations.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 8. Filter Files </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 10. Annotations</td></tr></table></div></body></html>