add some pmd rules

vtm-pmd.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0"?>
+<ruleset name="vtm ruleset"
+    xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd"
+    xsi:noNamespaceSchemaLocation="http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
+
+  <description>
+  This ruleset checks my code for bad stuff
+  </description>
+
+  <!-- We'll use the entire 'strings' ruleset -->
+  <rule ref="rulesets/java/strings.xml"/>
+
+  <!-- Here's some rules we'll specify one at a time -->
+  <rule ref="rulesets/java/unusedcode.xml/UnusedLocalVariable"/>
+  <rule ref="rulesets/java/unusedcode.xml/UnusedPrivateField"/>
+  <rule ref="rulesets/java/imports.xml/DuplicateImports"/>
+  <rule ref="rulesets/java/basic.xml/UnnecessaryConversionTemporary"/>
+
+  <!-- We want to customize this rule a bit, change the message and raise the priority  -->
+  <rule
+   ref="rulesets/java/basic.xml/EmptyCatchBlock"
+   message="Must handle exceptions">
+    <priority>2</priority>
+  </rule>
+
+  <!-- Now we'll customize a rule's property value -->
+  <rule ref="rulesets/java/codesize.xml/CyclomaticComplexity">
+    <properties>
+        <property name="reportLevel" value="30"/>
+    </properties>
+  </rule>
+
+  <!-- We want everything from braces.xml except WhileLoopsMustUseBraces -->
+  <!-- ><rule ref="rulesets/java/braces.xml">
+    <exclude name="WhileLoopsMustUseBraces"/>
+    <exclude name="IfElseStmtsMustUseBraces"/>
+  </rule>
+  -->
+  
+  <rule ref="rulesets/java/design.xml">
+     <exclude name="AvoidSynchronizedAtMethodLevel" />
+      <exclude name="AvoidReassigningParameters" />
+      <exclude name="CompareObjectsWithEquals" />
+      <exclude name="FieldDeclarationsShouldBeAtStartOfClass" />
+   </rule>
+  
+</ruleset>