diff --git a/.idea/misc.xml b/.idea/misc.xml
index 09235d0..f73893f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,5 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="EntryPointsManager">
+    <pattern value="rife2.render.Capitalize" />
+    <pattern value="rife2.render.Lowercase" />
+    <pattern value="rife2.render.SwapCase" />
+    <pattern value="rife2.render.Trim" />
+    <pattern value="rife2.render.Uncapitalize" />
+    <pattern value="rife2.render.Uppercase" />
+  </component>
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="PDMPlugin">
     <option name="skipTestSources" value="false" />
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 871c420..8b79293 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -3,6 +3,7 @@ import org.gradle.api.tasks.testing.logging.TestLogEvent
 
 plugins {
     `java-library`
+    pmd
     id("com.github.ben-manes.versions") version "0.46.0"
 }
 
@@ -40,6 +41,13 @@ java {
     }
 }
 
+pmd {
+    isIgnoreFailures = true
+    ruleSetFiles = files("${projectDir}/config/pmd.xml")
+    isConsoleOutput = true
+}
+
+
 tasks {
     test {
         useJUnitPlatform()
diff --git a/lib/config/pmd.xml b/lib/config/pmd.xml
new file mode 100644
index 0000000..8811583
--- /dev/null
+++ b/lib/config/pmd.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0"?>
+<ruleset name="erik"
+         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 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
+    <description>Erik's Ruleset</description>
+    <!-- BEST PRACTICES -->
+    <rule ref="category/java/bestpractices.xml">
+        <exclude name="AvoidPrintStackTrace"/>
+        <exclude name="JUnit4TestShouldUseTestAnnotation"/>
+        <exclude name="JUnitTestContainsTooManyAsserts"/>
+    </rule>
+
+    <rule ref="category/java/bestpractices.xml/MissingOverride">
+        <properties>
+            <property name="violationSuppressXPath"
+                      value="//MethodDeclaration[@Name='hashCode' or @Name='equals' or @Name='toString']"/>
+        </properties>
+    </rule>
+
+
+    <!-- CODE STYLE -->
+    <rule ref="category/java/codestyle.xml">
+        <exclude name="AtLeastOneConstructor"/>
+        <exclude name="ClassNamingConventions"/>
+        <exclude name="CommentDefaultAccessModifier"/>
+        <exclude name="ConfusingTernary"/>
+        <exclude name="DefaultPackage"/>
+        <exclude name="FieldNamingConventions"/>
+        <exclude name="LocalVariableCouldBeFinal"/>
+        <exclude name="LongVariable"/>
+        <exclude name="MethodArgumentCouldBeFinal"/>
+        <exclude name="OnlyOneReturn"/>
+        <exclude name="PackageCase"/>
+        <exclude name="ShortClassName"/>
+        <exclude name="ShortMethodName"/>
+        <exclude name="ShortVariable"/>
+        <exclude name="UselessParentheses"/>
+        <exclude name="UseUnderscoresInNumericLiterals"/>
+    </rule>
+
+    <!-- DESIGN -->
+    <rule ref="category/java/design.xml">
+        <exclude name="AvoidCatchingGenericException"/>
+        <exclude name="AvoidDeeplyNestedIfStmts"/>
+        <exclude name="AvoidUncheckedExceptionsInSignatures"/>
+        <exclude name="CognitiveComplexity"/>
+        <exclude name="CyclomaticComplexity"/>
+        <exclude name="ExcessiveClassLength"/>
+        <exclude name="ExcessiveMethodLength"/>
+        <exclude name="ExcessiveParameterList"/>
+        <exclude name="ExcessivePublicCount"/>
+        <exclude name="GodClass"/>
+        <exclude name="LawOfDemeter"/>
+        <exclude name="LoosePackageCoupling"/>
+        <exclude name="NPathComplexity"/>
+        <exclude name="NcssCount"/>
+        <exclude name="TooManyFields"/>
+        <exclude name="TooManyMethods"/>
+        <exclude name="UseObjectForClearerAPI"/>
+    </rule>
+
+    <!-- DOCUMENTATION -->
+    <rule ref="category/java/documentation.xml">
+        <exclude name="CommentRequired"/>
+        <exclude name="CommentSize"/>
+    </rule>
+
+    <!-- ERROR PRONE -->
+    <rule ref="category/java/errorprone.xml">
+        <exclude name="AssignmentInOperand"/>
+        <exclude name="AvoidCatchingNPE"/>
+        <exclude name="AvoidDuplicateLiterals"/>
+        <exclude name="AvoidFieldNameMatchingMethodName"/>
+        <exclude name="AvoidFieldNameMatchingTypeName"/>
+        <exclude name="AvoidLiteralsInIfCondition"/>
+        <exclude name="EmptyCatchBlock"/>
+        <exclude name="NullAssignment"/>
+    </rule>
+
+    <rule ref="category/java/errorprone.xml/AssignmentInOperand">
+        <properties>
+            <property name="allowWhile" value="true"/>
+            <property name="allowFor" value="true"/>
+            <property name="allowIf" value="true"/>
+        </properties>
+    </rule>
+    <rule ref="category/java/errorprone.xml/AvoidDuplicateLiterals">
+        <properties>
+            <property name="skipAnnotations" value="true"/>
+        </properties>
+    </rule>
+    <rule ref="category/java/errorprone.xml/EmptyCatchBlock">
+        <properties>
+            <property name="allowExceptionNameRegex">
+                <value>^ignore$</value>
+            </property>
+        </properties>
+    </rule>
+
+    <!-- MULTITHREADING -->
+    <rule ref="category/java/multithreading.xml">
+    </rule>
+
+    <!-- PERFORMANCE -->
+    <rule ref="category/java/performance.xml">
+    </rule>
+
+    <!-- SECURITY -->
+    <rule ref="category/java/security.xml">
+    </rule>
+</ruleset>
diff --git a/lib/src/main/java/rife2/render/Capitalize.java b/lib/src/main/java/rife2/render/Capitalize.java
index 1df8d92..8ddef91 100644
--- a/lib/src/main/java/rife2/render/Capitalize.java
+++ b/lib/src/main/java/rife2/render/Capitalize.java
@@ -21,7 +21,6 @@ import rife.template.Template;
 import rife.template.ValueRenderer;
 
 import java.util.Locale;
-import java.util.regex.Pattern;
 
 /**
  * <p>Capitalizes a template value.</p>