Add Checkstyele NewlineAtEndOfFile

Author: garydgregory

src/site/resources/checkstyle/checkstyle.xml

@@ -21,6 +21,10 @@ limitations under the License.
 <!-- Apache Commons Lang customization of default Checkstyle behavior -->
 <module name="Checker">
   <property name="localeLanguage" value="en"/>
+  <module name="NewlineAtEndOfFile">
+    <!-- Files are saved in the repository with LF line endings; on Windows, use git config core.autocrlf input -->
+    <property name="lineSeparator" value="lf" />
+  </module>
   <module name="FileTabCharacter">
     <property name="fileExtensions" value="java,xml"/>
   </module>

src/test/java/org/apache/commons/lang3/StringUtilsGetDigitsBenchmark.java

@@ -89,4 +89,4 @@ public String testGetDigitsManually() {
     public String testGetDigitsWithBuilder() {
         return getDigitsWithBuilder(testStr);
     }
-}
+}

src/test/java/org/apache/commons/lang3/StringUtilsJoinBenchmark.java

@@ -642,4 +642,4 @@ public static String join(final short[] array, final char delimiter, final int s
     private static Random newRandom() {
         return new Random(235);
     }
-}
+}

src/test/java/org/apache/commons/lang3/builder/ReflectionToStringBuilderCustomImplementationTest.java

@@ -52,4 +52,4 @@ void testBuild() {
                 new CustomReflectionToStringBuilder(this, ToStringStyle.NO_CLASS_NAME_STYLE).build());
     }
 
-}
+}