maven-plugins/pmd/src/plugin-resources/rulesets/codesize.xml

<?xml version="1.0"?>

<ruleset name="Code Size Rules">
  <description>
The Code Size Ruleset contains a collection of rules that find code size related problems.
  </description>


 <rule name="ExcessiveMethodLength"
       message="Avoid really long methods."
       class="net.sourceforge.pmd.rules.design.LongMethodRule">
   <description>
Excessive Method Length usually means that the method is doing
too much.  There is usually quite a bit of Cut and Paste there
as well.  Try to reduce the method size by creating helper methods,
and removing cut and paste.

Default value is 2.5 sigma greater than the mean.

NOTE:  In version 0.9 and higher, their are three parameters available:
minimum - Minimum Length before reporting.
sigma - Std Deviations away from the mean before reporting.
topscore - The Maximum Number of reports to generate.

At this time, only one can be used at a time.

   </description>
     <priority>3</priority>
   <properties>
    <property name="minimum" value="100"/>
   </properties>
   <example>
<![CDATA[
public void doSomething() {
  System.out.println("I am a fish.");
  System.out.println("I am a fish.");
  System.out.println("I am a fish.");
  System.out.println("I am a fish.");
  System.out.println("I am a fish.");
  // 495 copies omitted for brevity.
}
]]>
   </example>

 </rule>


 <rule name="ExcessiveParameterList"
       message="Avoid really long parameter lists."
       class="net.sourceforge.pmd.rules.design.LongParameterListRule">
   <description>
This checks to make sure that the Parameter Lists in the project aren't
getting too long.  If there are long parameter lists, then that is
generally indicative that another object is hiding around there.

Basically, try to group the parameters together.

Default value is 2.5 sigma greater than the mean.

NOTE:  In version 0.9 and higher, their are three parameters available:
minimum - Minimum Length before reporting.
sigma - Std Deviations away from the mean before reporting.
topscore - The Maximum Number of reports to generate.

At this time, only one can be used at a time.

   </description>
     <priority>3</priority>
   <properties>
    <property name="minimum" value="10"/>
   </properties>
   <example>
<![CDATA[
public void addData(
  int p00, int p01, int p02, int p03, int p04, int p05,
  int p05, int p06, int p07, int p08, int p09, int p10) {

  }
}
]]>
   </example>

 </rule>


 <rule name="ExcessiveClassLength"
       message="Avoid really long Classes."
       class="net.sourceforge.pmd.rules.design.LongClassRule">
   <description>
Long Class files are indications that the class may be trying to
do too much.  Try to break it down, and reduce the size to something
managable.

Default value is 2.5 sigma greater than the mean.

NOTE:  In version 0.9 and higher, their are three parameters available:
minimum - Minimum Length before reporting.
sigma - Std Deviations away from the mean before reporting.
topscore - The Maximum Number of reports to generate.

At this time, only one can be used at a time.

   </description>
     <priority>3</priority>
   <properties>
    <property name="minimum" value="1000"/>
   </properties>
   <example>
<![CDATA[
public class Foo {
  public void bar() {
    // 500 lines of code
  }

  public void baz() {
    // 500 more lines of code
  }
}
]]>
   </example>
 </rule>


    <rule name="CyclomaticComplexityRule"
      message = "The {0} ''{1}'' has a Cyclomatic Complexity of {2}."
      class="net.sourceforge.pmd.rules.CyclomaticComplexityRule">
   <description>
Complexity is determined by the number of decision points in a method plus one for the
method entry.  The decision points are 'if', 'while', 'for', and 'case labels'.  Scale:
1-4 (low complexity)   5-7 (moderate complexity)   8-10 (high complexity)   10+ (very high complexity)
   </description>
   <priority>3</priority>
   <properties>
      <property name="reportLevel" value="10"/>
   </properties>
   <example>
<![CDATA[
Cyclomatic Complexity = 12

public class Foo
{
1   public void example()
    {
2       if (a == b)
        {
3           if (a1 == b1)
            {
                do something;
            }
4           else if a2 == b2)
            {
                do something;
            }
            else
            {
                do something;
            }
        }
5       else if (c == d)
        {
6           while (c == d)
            {
                do something;
            }
        }
7       else if (e == f)
        {
8           for (int n = 0; n < h; n++)
            {
                do something;
            }
        }
        else
        {
            switch (z)
            {
9               case 1:
                    do something;
                    break;

10              case 2:
                    do something;
                    break;

11              case 3:
                    do something;
                    break;

12              default:
                    do something;
                    break;
            }
        }
    }
}
]]>
   </example>
</rule>

    <rule name="ExcessivePublicCountRule"
    message="A high number of public methods and attributes in an object can indicate the class may need to be broken up for exhaustive testing may prove difficult."
    class="net.sourceforge.pmd.rules.ExcessivePublicCountRule">
    <description>
    A large amount of public methods and attributes declared in an object can indicate the class may need
    to be broken up as increased effort will be required to thoroughly test such a class.
    </description>
    <priority>3</priority>
    <properties>
    <property name="minimum" value="45"/>
    </properties>
    <example>
    <![CDATA[

    public class Foo {
    public String value;
    public Bar something;
    public Variable var;
    //more public attributes
    public void doWork() {}
    public void doMoreWork() {}
    public void doWorkAgain() {}
    public void doWorking() {}
    public void doWorkIt() {}
    public void doWorkingAgain() {}
    public void doWorkAgainAgain() {}
    public void doWorked() {}

    }
    ]]>
    </example>
    </rule>


</ruleset>