diff --git a/build.xml b/build.xml
index d95303166..fa6f0458e 100644
--- a/build.xml
+++ b/build.xml
@@ -30,6 +30,7 @@
   <property name="xdocs.src" value="src/xdocs"/>
   <property name="xdocs.dest" value="target/docs"/>
   <property name="checkstyle.minimum.javaversion" value="1.4" />
+  <property name="checkstyle.testinputs.minimum.javaversion" value="1.5" />
   <property name="version" value="4.0-beta4" />
 
   <path id="build.classpath">
@@ -179,13 +180,24 @@
     <depend srcdir="src/testinputs" destdir="target/testinputs" closure="yes"/>
     <!-- start of a change to turn on compilation of all input files -->
     <!-- under JDK1.5. -->
-    <property name="testExcludes"
-              value="**/grammars/*,**/j2ee/*,**/InputAssertIdentifier.java,**/InputJUnitTest.java,**/InputValidMethodIndent.java,**/InputSetterGetter.java,**/InputImport.java,**/InputCovariant.java,**/InputClone.java,**/InputSimple.java"/>
     <javac srcdir="src/testinputs"
            destdir="target/testinputs"
            deprecation="on" debug="on"
-           excludes="${testExcludes}"
-           includeAntRuntime="false"/>
+           source="${checkstyle.testinputs.minimum.javaversion}"
+           target="${checkstyle.testinputs.minimum.javaversion}"
+           includeAntRuntime="false">
+        <exclude name="**/j2ee/*" />
+        <exclude name="**/InputAssertIdentifier.java" />
+        <exclude name="**/InputClone.java" />
+        <exclude name="**/InputCovariant.java" />
+        <exclude name="**/InputGrammar.java" />
+        <exclude name="**/InputImport.java" />
+        <exclude name="**/InputJUnitTest.java" />
+        <exclude name="**/InputSetterGetter.java" />
+        <exclude name="**/InputSimple.java" />
+        <exclude name="**/InputValidMethodIndent.java" />
+        <exclude name="**/Post13KeywordsAsIdentifiersOK.java" />
+    </javac>
   </target>
 
   <!-- Compiles only the test code. Input files are excluded from
@@ -373,7 +385,7 @@ For users of JDK 1.5 at least version 1.6.2 of Ant is required.
 
   <!-- To run the tests need Xalan in the classpath -->
   <target name="run.tests"
-          depends="compile.tests,require.ant15,require.junit,require.xalan"
+          depends="compile.tests,require.ant15,require.junit,require.xalan,compile.testinputs"
           description="Runs the tests for checkstyle">
 
     <mkdir dir="${testreport.dir}"/>
@@ -413,7 +425,7 @@ For users of JDK 1.5 at least version 1.6.2 of Ant is required.
 
   <!-- To run the tests need Xalan in the classpath -->
   <target name="run.test.suite"
-          depends="compile.tests,require.ant15,require.junit,require.xalan"
+          depends="compile.tests,require.ant15,require.junit,require.xalan,compile.testinputs"
           description="Runs the tests for checkstyle as a test suite">
 
     <mkdir dir="${testreport.dir}"/>
diff --git a/src/checkstyle/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java b/src/checkstyle/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java
index 07a4f1d58..2792ce073 100644
--- a/src/checkstyle/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java
+++ b/src/checkstyle/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java
@@ -88,6 +88,9 @@ public class HiddenFieldCheck
     /** controls whether to check the parameter of a constructor */
     private boolean mIgnoreConstructorParameter;
 
+    /** controls whether to check the parameter of abstract methods. */
+    private boolean mIgnoreAbstractMethods;
+
     /** @see com.puppycrawl.tools.checkstyle.api.Check */
     public int[] getDefaultTokens()
     {
@@ -207,7 +210,8 @@ public class HiddenFieldCheck
              || (!inStatic(aAST) && mCurrentFrame.containsInstanceField(name)))
             && ((mRegexp == null) || (!getRegexp().matcher(name).find()))
             && !isIgnoredSetterParam(aAST, name)
-            && !isIgnoredConstructorParam(aAST))
+            && !isIgnoredConstructorParam(aAST)
+            && !isIgnoredParamOfAbstractMethod(aAST))
         {
             log(nameAST, "hidden.field", name);
         }
@@ -296,6 +300,29 @@ public class HiddenFieldCheck
         return (constructorAST.getType() == TokenTypes.CTOR_DEF);
     }
 
+    /**
+     * Decides whether to ignore an AST node that is the parameter of an
+     * abstract method.
+     * @param aAST the AST to check.
+     * @return true if aAST should be ignored because check property
+     * ignoreAbstactMethods is true and aAST is a parameter of abstract
+     * methods.
+     */
+    private boolean isIgnoredParamOfAbstractMethod(DetailAST aAST)
+    {
+        if (aAST.getType() != TokenTypes.PARAMETER_DEF
+            || !mIgnoreAbstractMethods)
+        {
+            return false;
+        }
+        final DetailAST method = aAST.getParent().getParent();
+        if (method.getType() != TokenTypes.METHOD_DEF) {
+            return false;
+        }
+        final DetailAST mods = method.findFirstToken(TokenTypes.MODIFIERS);
+        return (mods != null && mods.branchContains(TokenTypes.ABSTRACT));
+    }
+
     /**
      * Set the ignore format to the specified regular expression.
      * @param aFormat a <code>String</code> value
@@ -333,6 +360,17 @@ public class HiddenFieldCheck
         mIgnoreConstructorParameter = aIgnoreConstructorParameter;
     }
 
+    /**
+     * Set whether to ignore parameters of abstract methods.
+     * @param aIgnoreAbstractMethods decide whether to ignore
+     * parameters of abstract methods.
+     */
+    public void setIgnoreAbstractMethods(
+        boolean aIgnoreAbstractMethods)
+    {
+        mIgnoreAbstractMethods = aIgnoreAbstractMethods;
+    }
+
     /** @return the regexp to match against */
     public Pattern getRegexp()
     {
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/InputHiddenField.java b/src/testinputs/com/puppycrawl/tools/checkstyle/InputHiddenField.java
index 76bbd9b74..77610bec7 100644
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/InputHiddenField.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/InputHiddenField.java
@@ -224,8 +224,8 @@ enum HiddenEnum
     }
 }
 
-// perhaps we should ignore this
-// abstract class InputHiddenFieldBug1084512 {
-//     String x;
-//     public abstract void methodA(String x);
-// }
+// we should ignore this if user wants (ignoreAbstractMethods is true)
+abstract class InputHiddenFieldBug1084512 {
+    String x;
+    public abstract void methodA(String x);
+}
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadoc.java b/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadoc.java
index 5dddb3886..af42ac65b 100644
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadoc.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadoc.java
@@ -109,6 +109,6 @@ enum InputJavadocEnum2
 * @author ABC
 * @version 1.1
 */
-@interface InputJavadocInterfaceType
+@interface InputJavadocInterfaceType1
 {
-}
\ No newline at end of file
+}
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadocStyleCheck.java b/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadocStyleCheck.java
index ad1e1f889..eafae9641 100755
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadocStyleCheck.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/InputJavadocStyleCheck.java
@@ -251,7 +251,7 @@ public class InputJavadocStyleCheck
     * @param <T> this is NOT an unclosed T tag
     * @author <a href="mailto:foo@nomail.com">Foo Bar</a>
     */
-    public class Test<T>
+    public class TestClass<T>
     {
         /**
         * Retrieves X.
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/InputTypeParamsTags.java b/src/testinputs/com/puppycrawl/tools/checkstyle/InputTypeParamsTags.java
index a9cee91b7..c057ba0b9 100644
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/InputTypeParamsTags.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/InputTypeParamsTags.java
@@ -8,7 +8,7 @@ package com.puppycrawl.tools.checkstyle;
  * @author Nobody
  * @version 1.0
  */
-public class InputTypeArgTags<A,B,C extends Comparable>
+public class InputTypeParamsTags<A,B,C extends Comparable>
 {
     /**
      * Some explanation.
@@ -37,4 +37,4 @@ public class InputTypeArgTags<A,B,C extends Comparable>
     public <L> void doSomethingElse2(L aAnEl)
     {
     }
-}
\ No newline at end of file
+}
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputEmbeddedNullChar.java b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputEmbeddedNullChar.java
index 687b92c15..6c318ebc2 100644
Binary files a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputEmbeddedNullChar.java and b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputEmbeddedNullChar.java differ
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputHexFloat.java b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputHexFloat.java
index 4ec38c341..e02ec583c 100644
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputHexFloat.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputHexFloat.java
@@ -5,12 +5,12 @@ package com.puppycrawl.tools.checkstyle.grammars;
  */
 public class InputHexFloat
 {
-    float f1 = 0x.0P10;
-    float f2 = 0x1.P-1;
-    float f3 = 0Xab1P0;
-    float f4 = 0Xab1ap+20;
-    float f5 = 0Xab1ap+20D;
-    float f6 = 0Xab1ap+20d;
-    float f5 = 0Xab1ap+20f;
-    float f6 = 0Xab1ap+20F;
+    double f1 = 0x.0P10;
+    double f2 = 0x1.P-1;
+    double f3 = 0Xab1P0;
+    double f4 = 0Xab1ap+20;
+    double f5 = 0Xab1ap+20D;
+    double f6 = 0Xab1ap+20d;
+    double f7 = 0Xab1ap+20f;
+    double f8 = 0Xab1ap+20F;
 }
diff --git a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputVararg.java b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputVararg.java
index e7f1cbf32..6469f07db 100644
--- a/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputVararg.java
+++ b/src/testinputs/com/puppycrawl/tools/checkstyle/grammars/InputVararg.java
@@ -3,7 +3,7 @@ package com.puppycrawl.tools.checkstyle.grammars;
 /**
  * Input for vararg test.
  */
-public class InputGrammar
+public class InputVararg
 {
     public static void main(String... args)
     {
diff --git a/src/tests/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheckTest.java b/src/tests/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheckTest.java
index 4e72a927f..969d22736 100644
--- a/src/tests/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheckTest.java
+++ b/src/tests/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheckTest.java
@@ -70,6 +70,7 @@ public class HiddenFieldCheckTest
             "210:20: 'hidden' hides a field.",
             "217:13: 'hidden' hides a field.",
             "223:13: 'hiddenStatic' hides a field.",
+            "230:41: 'x' hides a field.",
         };
         verify(checkConfig, getPath("InputHiddenField.java"), expected);
     }
@@ -105,6 +106,7 @@ public class HiddenFieldCheckTest
             "210:20: 'hidden' hides a field.",
             "217:13: 'hidden' hides a field.",
             "223:13: 'hiddenStatic' hides a field.",
+            "230:41: 'x' hides a field.",
         };
         verify(checkConfig, getPath("InputHiddenField.java"), expected);
     }
@@ -145,6 +147,7 @@ public class HiddenFieldCheckTest
             "210:20: 'hidden' hides a field.",
             "217:13: 'hidden' hides a field.",
             "223:13: 'hiddenStatic' hides a field.",
+            "230:41: 'x' hides a field.",
         };
         verify(checkConfig, getPath("InputHiddenField.java"), expected);
     }
@@ -183,6 +186,7 @@ public class HiddenFieldCheckTest
             "200:17: 'hidden' hides a field.",
             "217:13: 'hidden' hides a field.",
             "223:13: 'hiddenStatic' hides a field.",
+            "230:41: 'x' hides a field.",
         };
         verify(checkConfig, getPath("InputHiddenField.java"), expected);
     }
@@ -217,4 +221,44 @@ public class HiddenFieldCheckTest
         };
         verify(checkConfig, getPath("InputHiddenFieldReorder.java"), expected);
     }
+
+    public void testIgnoreAbstractMethods() throws Exception
+    {
+        final DefaultConfiguration checkConfig =
+            createCheckConfig(HiddenFieldCheck.class);
+        checkConfig.addAttribute("ignoreAbstractMethods", "true");
+
+        final String[] expected = {
+            "18:13: 'hidden' hides a field.",
+            "21:33: 'hidden' hides a field.",
+            "27:13: 'hidden' hides a field.",
+            "32:18: 'hidden' hides a field.",
+            "36:33: 'hidden' hides a field.",
+            "46:17: 'innerHidden' hides a field.",
+            "49:26: 'innerHidden' hides a field.",
+            "55:17: 'innerHidden' hides a field.",
+            "56:17: 'hidden' hides a field.",
+            "61:22: 'innerHidden' hides a field.",
+            "64:22: 'hidden' hides a field.",
+            "69:17: 'innerHidden' hides a field.",
+            "70:17: 'hidden' hides a field.",
+            "76:17: 'innerHidden' hides a field.",
+            "77:17: 'hidden' hides a field.",
+            "82:13: 'hidden' hides a field.",
+            "100:29: 'prop' hides a field.",
+            "106:29: 'prop' hides a field.",
+            "112:29: 'prop' hides a field.",
+            "124:28: 'prop' hides a field.",
+            "138:13: 'hidden' hides a field.",
+            "143:13: 'hidden' hides a field.",
+            "148:13: 'hidden' hides a field.",
+            "152:13: 'hidden' hides a field.",
+            "179:23: 'y' hides a field.",
+            "200:17: 'hidden' hides a field.",
+            "210:20: 'hidden' hides a field.",
+            "217:13: 'hidden' hides a field.",
+            "223:13: 'hiddenStatic' hides a field.",
+        };
+        verify(checkConfig, getPath("InputHiddenField.java"), expected);
+    }
 }
diff --git a/src/xdocs/config_coding.xml b/src/xdocs/config_coding.xml
index 81597b61b..d02c55077 100755
--- a/src/xdocs/config_coding.xml
+++ b/src/xdocs/config_coding.xml
@@ -389,6 +389,7 @@ public class MySingleton
             <td><a href="property_types.html#boolean">Boolean</a></td>
             <td><span class="default">false</span></td>
           </tr>
+
           <tr>
             <td>ignoreSetter</td>
             <td>
@@ -400,6 +401,14 @@ public class MySingleton
             <td><a href="property_types.html#boolean">Boolean</a></td>
             <td><span class="default">false</span></td>
           </tr>
+
+          <tr>
+            <td>ignoreAbstractMethods</td>
+            <td>Controls whether to ignore parameters of abstract methods.</td>
+            <td><a href="property_types.html#boolean">Boolean</a></td>
+            <td><span class="default">false</span></td>
+          </tr>
+
         </table>
       </subsection>
 
diff --git a/src/xdocs/releasenotes.xml b/src/xdocs/releasenotes.xml
index 9c6d432c7..75a474c92 100755
--- a/src/xdocs/releasenotes.xml
+++ b/src/xdocs/releasenotes.xml
@@ -10,6 +10,17 @@
 
   <body>
 
+    <section name="Release 4.0 Beta 5">
+      <p>Fixed Bugs:</p>
+
+      <ul>
+        <li>HiddenField can be configured to ignore parameters of
+        abstract methods (property ignoreAbstractMethods, bug
+        1084512)</li>
+
+      </ul>
+    </section>
+
     <section name="Release 4.0 Beta 4">
       <p>Fixed Bugs:</p>