diff --git a/checkstyle.xml b/checkstyle.xml
index 0b20a08..163b762 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -15,7 +15,6 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-
 <!DOCTYPE module PUBLIC
     "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
     "https://checkstyle.org/dtds/configuration_1_3.dtd">
@@ -23,7 +22,7 @@ limitations under the License.
 <!-- commons logging customization of default Checkstyle behavior -->
 <module name="Checker">
   <property name="localeLanguage" value="en" />
-  <property name="severity" value="warning"/>
+  <property name="severity" value="warning" />
 
   <!-- Checks whether files end with a new line. -->
   <!-- See http://checkstyle.sf.net/config_misc.html#NewlineAtEndOfFile -->
@@ -57,7 +56,7 @@ limitations under the License.
   </module>
 
   <module name="LineLength">
-    <property name="max" value="160"/>
+    <property name="max" value="160" />
   </module>
 
   <module name="TreeWalker">
@@ -65,12 +64,13 @@ limitations under the License.
       <property name="option" value="eol" />
     </module>
     <module name="ImportOrder">
-      <property name="option" value="top"/>
-      <property name="groups" value="java,javax,org"/>
-      <property name="ordered" value="true"/>
-      <property name="separated" value="true"/>
-      <property name="sortStaticImportsAlphabetically" value="true"/>
+      <property name="option" value="top" />
+      <property name="groups" value="java,javax,org" />
+      <property name="ordered" value="true" />
+      <property name="separated" value="true" />
+      <property name="sortStaticImportsAlphabetically" value="true" />
     </module>
     <module name="WhitespaceAfter" />
+    <module name="ParenPad" />
   </module>
 </module>
diff --git a/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java b/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
index ce66e4b..19c9978 100644
--- a/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
+++ b/src/main/java/org/apache/commons/logging/impl/Jdk13LumberjackLogger.java
@@ -159,11 +159,10 @@ public class Jdk13LumberjackLogger implements Log, Serializable {
             final Throwable throwable = new Throwable();
             throwable.fillInStackTrace();
             final StringWriter stringWriter = new StringWriter();
-            final PrintWriter printWriter = new PrintWriter( stringWriter );
-            throwable.printStackTrace( printWriter );
+            final PrintWriter printWriter = new PrintWriter(stringWriter);
+            throwable.printStackTrace(printWriter);
             final String traceString = stringWriter.getBuffer().toString();
-            final StringTokenizer tokenizer =
-                new StringTokenizer( traceString, "\n" );
+            final StringTokenizer tokenizer = new StringTokenizer(traceString, "\n");
             tokenizer.nextToken();
             String line = tokenizer.nextToken();
             while (!line.contains(this.getClass().getName())) {
@@ -172,13 +171,13 @@ public class Jdk13LumberjackLogger implements Log, Serializable {
             while (line.contains(this.getClass().getName())) {
                 line = tokenizer.nextToken();
             }
-            final int start = line.indexOf( "at " ) + 3;
-            final int end = line.indexOf( '(' );
-            final String temp = line.substring( start, end );
-            final int lastPeriod = temp.lastIndexOf( '.' );
-            sourceClassName = temp.substring( 0, lastPeriod );
-            sourceMethodName = temp.substring( lastPeriod + 1 );
-        } catch ( final Exception ex ) {
+            final int start = line.indexOf("at ") + 3;
+            final int end = line.indexOf('(');
+            final String temp = line.substring(start, end);
+            final int lastPeriod = temp.lastIndexOf('.');
+            sourceClassName = temp.substring(0, lastPeriod);
+            sourceMethodName = temp.substring(lastPeriod + 1);
+        } catch (final Exception ex) {
             // ignore - leave class and methodname unknown
         }
         classAndMethodFound = true;