Fixes #1021

pmd-java/src/main/resources/category/java/design.xml

@@ -488,6 +488,7 @@ public class DataClass {
 
     <rule name="DoNotExtendJavaLangError"
           language="java"
+          typeResolution="true"
           since="4.0"
           message="Exceptions should not extend java.lang.Error"
           class="net.sourceforge.pmd.lang.rule.XPathRule"
@@ -501,7 +502,9 @@ Errors are system exceptions. Do not extend them.
                 <value>
 <![CDATA[
 //ClassOrInterfaceDeclaration/ExtendsList/ClassOrInterfaceType
-  [@Image="Error" or @Image="java.lang.Error"]
+  [typeof(@Image,'java.lang.Error','Error')]
+
+
 ]]>
                 </value>
             </property>

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/design/xml/DoNotExtendJavaLangError.xml

@@ -33,4 +33,18 @@ public class Foo extends FooError {
 }
      ]]></code>
     </test-code>
+
+    <test-code>
+        <description><![CDATA[
+Extends name Error
+     ]]></description>
+        <expected-problems>0</expected-problems>
+        <code><![CDATA[
+        import net.sourceforge.pmd.lang.java.rule.design.donotextendjavalangerror.Error;
+
+public class Foo extends Error {
+}
+     ]]></code>
+    </test-code>
+
 </test-data>