Add @Override
diff --git a/jena-core/src/main/java/org/apache/jena/ext/xerces/impl/dv/xs/DateTimeStampDV.java b/jena-core/src/main/java/org/apache/jena/ext/xerces/impl/dv/xs/DateTimeStampDV.java
index 312566b..62fc8c2 100644
--- a/jena-core/src/main/java/org/apache/jena/ext/xerces/impl/dv/xs/DateTimeStampDV.java
+++ b/jena-core/src/main/java/org/apache/jena/ext/xerces/impl/dv/xs/DateTimeStampDV.java
@@ -44,6 +44,7 @@
     * @return normalized dateTime representation
     * @exception SchemaDateTimeException Invalid lexical representation
     */
+   @Override
    protected DateTimeData parse(String str) throws SchemaDateTimeException {
       DateTimeData dateTimeData = super.parse( str );
       if (dateTimeData.hasTimeZone()) {