diff --git a/config/checkstyle_checks.xml b/config/checkstyle_checks.xml
index ae8d0490e..f8c86425a 100644
--- a/config/checkstyle_checks.xml
+++ b/config/checkstyle_checks.xml
@@ -337,7 +337,7 @@
     <module name="MethodTypeParameterName"/>
     <module name="PackageName"/>
     <module name="ParameterName">
-      <property name="format" value="^[a-z][a-zA-Z0-9]+$"/>
+      <property name="format" value="^(id)|([a-z][a-z0-9][a-zA-Z0-9]+)$"/>
       <property name="ignoreOverridden" value="true"/>
     </module>
     <module name="CatchParameterName">
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/api/LocalizedMessages.java b/src/main/java/com/puppycrawl/tools/checkstyle/api/LocalizedMessages.java
index ac694a677..d6ee8f781 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/api/LocalizedMessages.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/api/LocalizedMessages.java
@@ -47,10 +47,10 @@ public final class LocalizedMessages {
 
     /**
      * Logs a message to be reported.
-     * @param aMsg the message to log
+     * @param message the message to log
      **/
-    public void add(LocalizedMessage aMsg) {
-        messages.add(aMsg);
+    public void add(LocalizedMessage message) {
+        messages.add(message);
     }
 
     /**
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java b/src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java
index 3610f4fcc..fff37eb5f 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java
@@ -401,14 +401,14 @@ public class TranslationCheck
 
     /**
      * Helper method to log an io exception.
-     * @param ex the exception that occurred
+     * @param exception the exception that occurred
      * @param file the file that could not be processed
      */
-    private void logIoException(IOException ex, File file) {
+    private void logIoException(IOException exception, File file) {
         String[] args = null;
         String key = "general.fileNotFound";
-        if (!(ex instanceof FileNotFoundException)) {
-            args = new String[] {ex.getMessage()};
+        if (!(exception instanceof FileNotFoundException)) {
+            args = new String[] {exception.getMessage()};
             key = "general.exception";
         }
         final LocalizedMessage message =
@@ -422,7 +422,7 @@ public class TranslationCheck
         final SortedSet<LocalizedMessage> messages = Sets.newTreeSet();
         messages.add(message);
         getMessageDispatcher().fireErrors(file.getPath(), messages);
-        LOG.debug("IOException occurred.", ex);
+        LOG.debug("IOException occurred.", exception);
     }
 
     /**
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractComplexityCheck.java b/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractComplexityCheck.java
index 6534e6e6b..d9ae0fe24 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractComplexityCheck.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractComplexityCheck.java
@@ -145,10 +145,10 @@ public abstract class AbstractComplexityCheck
     /**
      * Increments the current value by a specified amount.
      *
-     * @param by the amount to increment by
+     * @param amount the amount to increment by
      */
-    protected final void incrementCurrentValue(BigInteger by) {
-        currentValue = currentValue.add(by);
+    protected final void incrementCurrentValue(BigInteger amount) {
+        currentValue = currentValue.add(amount);
     }
 
     /** Push the current value on the stack. */
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/CyclomaticComplexityCheck.java b/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/CyclomaticComplexityCheck.java
index dfee755db..e5c7cd393 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/CyclomaticComplexityCheck.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/CyclomaticComplexityCheck.java
@@ -201,10 +201,10 @@ public class CyclomaticComplexityCheck
     /**
      * Increments the current value by a specified amount.
      *
-     * @param by the amount to increment by
+     * @param amount the amount to increment by
      */
-    protected final void incrementCurrentValue(BigInteger by) {
-        currentValue = currentValue.add(by);
+    protected final void incrementCurrentValue(BigInteger amount) {
+        currentValue = currentValue.add(amount);
     }
 
     /** Push the current value on the stack. */
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtils.java b/src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtils.java
index 98513a41d..203256665 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtils.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtils.java
@@ -62,12 +62,12 @@ public final class ScopeUtils {
 
     /**
      * Returns the scope of the surrounding "block".
-     * @param aAST the node to return the scope for
+     * @param node the node to return the scope for
      * @return the Scope of the surrounding block
      */
-    public static Scope getSurroundingScope(DetailAST aAST) {
+    public static Scope getSurroundingScope(DetailAST node) {
         Scope returnValue = null;
-        for (DetailAST token = aAST.getParent();
+        for (DetailAST token = node.getParent();
              token != null;
              token = token.getParent()) {
             final int type = token.getType();
@@ -95,14 +95,14 @@ public final class ScopeUtils {
     /**
      * Returns whether a node is directly contained within an interface block.
      *
-     * @param aAST the node to check if directly contained within an interface block.
+     * @param node the node to check if directly contained within an interface block.
      * @return a {@code boolean} value
      */
-    public static boolean isInInterfaceBlock(DetailAST aAST) {
+    public static boolean isInInterfaceBlock(DetailAST node) {
         boolean returnValue = false;
 
         // Loop up looking for a containing interface block
-        for (DetailAST token = aAST.getParent();
+        for (DetailAST token = node.getParent();
              token != null && !returnValue;
              token = token.getParent()) {
 
@@ -125,14 +125,14 @@ public final class ScopeUtils {
     /**
      * Returns whether a node is directly contained within an annotation block.
      *
-     * @param aAST the node to check if directly contained within an annotation block.
+     * @param node the node to check if directly contained within an annotation block.
      * @return a {@code boolean} value
      */
-    public static boolean isInAnnotationBlock(DetailAST aAST) {
+    public static boolean isInAnnotationBlock(DetailAST node) {
         boolean returnValue = false;
 
         // Loop up looking for a containing interface block
-        for (DetailAST token = aAST.getParent();
+        for (DetailAST token = node.getParent();
              token != null && !returnValue;
              token = token.getParent()) {
             final int type = token.getType();
@@ -155,25 +155,25 @@ public final class ScopeUtils {
      * Returns whether a node is directly contained within an interface or
      * annotation block.
      *
-     * @param aAST the node to check if directly contained within an interface
+     * @param node the node to check if directly contained within an interface
      *     or annotation block.
      * @return a {@code boolean} value
      */
-    public static boolean isInInterfaceOrAnnotationBlock(DetailAST aAST) {
-        return isInInterfaceBlock(aAST) || isInAnnotationBlock(aAST);
+    public static boolean isInInterfaceOrAnnotationBlock(DetailAST node) {
+        return isInInterfaceBlock(node) || isInAnnotationBlock(node);
     }
 
     /**
      * Returns whether a node is directly contained within an enum block.
      *
-     * @param aAST the node to check if directly contained within an enum block.
+     * @param node the node to check if directly contained within an enum block.
      * @return a {@code boolean} value
      */
-    public static boolean isInEnumBlock(DetailAST aAST) {
+    public static boolean isInEnumBlock(DetailAST node) {
         boolean returnValue = false;
 
         // Loop up looking for a containing interface block
-        for (DetailAST token = aAST.getParent();
+        for (DetailAST token = node.getParent();
              token != null && !returnValue;
              token = token.getParent()) {
             final int type = token.getType();
@@ -195,14 +195,14 @@ public final class ScopeUtils {
      * Returns whether the scope of a node is restricted to a code block.
      * A code block is a method or constructor body, or a initializer block.
      *
-     * @param aAST the node to check
+     * @param node the node to check
      * @return a {@code boolean} value
      */
-    public static boolean isInCodeBlock(DetailAST aAST) {
+    public static boolean isInCodeBlock(DetailAST node) {
         boolean returnValue = false;
 
         // Loop up looking for a containing code block
-        for (DetailAST token = aAST.getParent();
+        for (DetailAST token = node.getParent();
              token != null;
              token = token.getParent()) {
             final int type = token.getType();
@@ -221,12 +221,12 @@ public final class ScopeUtils {
     /**
      * Returns whether a node is contained in the outer most type block.
      *
-     * @param aAST the node to check
+     * @param node the node to check
      * @return a {@code boolean} value
      */
-    public static boolean isOuterMostType(DetailAST aAST) {
+    public static boolean isOuterMostType(DetailAST node) {
         boolean returnValue = true;
-        for (DetailAST parent = aAST.getParent();
+        for (DetailAST parent = node.getParent();
              parent != null;
              parent = parent.getParent()) {
             if (parent.getType() == TokenTypes.CLASS_DEF
@@ -245,22 +245,22 @@ public final class ScopeUtils {
      * Determines whether a node is a local variable definition.
      * I.e. if it is declared in a code block, a for initializer,
      * or a catch parameter.
-     * @param aAST the node to check.
+     * @param node the node to check.
      * @return whether aAST is a local variable definition.
      */
-    public static boolean isLocalVariableDef(DetailAST aAST) {
+    public static boolean isLocalVariableDef(DetailAST node) {
         boolean localVariableDef = false;
         // variable declaration?
-        if (aAST.getType() == TokenTypes.VARIABLE_DEF) {
-            final DetailAST parent = aAST.getParent();
+        if (node.getType() == TokenTypes.VARIABLE_DEF) {
+            final DetailAST parent = node.getParent();
             final int type = parent.getType();
             localVariableDef = type == TokenTypes.SLIST
                     || type == TokenTypes.FOR_INIT
                     || type == TokenTypes.FOR_EACH_CLAUSE;
         }
         // catch parameter?
-        if (aAST.getType() == TokenTypes.PARAMETER_DEF) {
-            final DetailAST parent = aAST.getParent();
+        if (node.getType() == TokenTypes.PARAMETER_DEF) {
+            final DetailAST parent = node.getParent();
             localVariableDef = parent.getType() == TokenTypes.LITERAL_CATCH;
         }
         return localVariableDef;
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheckTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheckTest.java
index 15361f111..562c5d285 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheckTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheckTest.java
@@ -230,11 +230,11 @@ public class ImportControlCheckTest extends BaseCheckTestSupport {
      * and caught in test (it was caught and re-thrown twice after that)
      * Note: this is helper method with hard-coded structure of exception causes. It works
      * fine for methods mentioned, you may need to adjust it if you try to use it for other needs
-     * @param ex Exception
+     * @param exception Exception
      * @return String message of original exception
      */
-    private static String getInvocationTargetExceptionMessage(CheckstyleException ex) {
-        return ((InvocationTargetException) ex.getCause().getCause())
+    private static String getInvocationTargetExceptionMessage(CheckstyleException exception) {
+        return ((InvocationTargetException) exception.getCause().getCause())
             .getTargetException().getMessage();
     }
 }
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/grammars/javadoc/JavadocParseTreeTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/grammars/javadoc/JavadocParseTreeTest.java
index b7fcbcaef..d7d92abbc 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/grammars/javadoc/JavadocParseTreeTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/grammars/javadoc/JavadocParseTreeTest.java
@@ -278,8 +278,8 @@ public class JavadocParseTreeTest {
         compareTrees(expectedTree, generatedTree);
     }
 
-    private void compareTrees(ParseTree t1, ParseTree t2) {
-        Assert.assertEquals(t1.toStringTree(parser), t2.toStringTree(parser));
+    private void compareTrees(ParseTree first, ParseTree second) {
+        Assert.assertEquals(first.toStringTree(parser), second.toStringTree(parser));
     }
 
     private static class FailOnErrorListener extends BaseErrorListener {