Fix a very annoying bug

docs/releasenotes.html

@@ -91,14 +91,14 @@ checkstyle-user</a>).</li>
           <li class="body">Added filter that suppresses audit events according to source file
           comments, contributed by Mike McMahon (module SuppressionCommentFilter,
           requests 732196 and 931327).</li>
-          
+
            <li class="body">Better information for unexpected char (request 666188).
            </li>
-           
+
            <li class="body">Added charset property to TreeWalker and StrictDuplicateCode
           check (addresses bug 975346).
           </li>
-          
+
           <li class="body">French message translations,
           contributed by Pierre Dittgen
           (request 978916).</li>
@@ -110,7 +110,7 @@ checkstyle-user</a>).</li>
           <li class="body">FinalLocalVariable ignores parameters of interface methods
           and abstract methods.
           (request 993922 and bug 1002849).</li>
-          
+
           <li class="body">com.puppycrawl.tools.checkstyle.gui.Main accepts an
           optional file name in the command line.
           (request 1000102).</li>
@@ -137,17 +137,24 @@ checkstyle-user</a>).</li>
 
          <li class="body">StrictDuplicateCodeCheck did not find duplicates
          within the same file.</li>
-         
+
          <li class="body">Unexpected char (bug 975346).</li>
 
          <li class="body">MagicNumber check overly aggressive
          (reported on user mailing list).</li>
-         
+
          <li class="body">Documentation error for naming convention checks
          (bug 987503).</li>
 
-          <li class="body">FinalParametersCheck checks parameters of abstract methods.
+	 <li class="body">FinalParametersCheck checks parameters of
+	 abstract methods.
           (bug 1002849).</li>
+
+	  <li>Bug in ClassResolver where it was mismatching imports -
+	  example would match SecurityDataException when looking for
+	  DataException. Bug was visible in RedundantThrows check (no
+	  known bug).</li>
+
       </ul>
 
       <p class="body">

src/checkstyle/com/puppycrawl/tools/checkstyle/checks/ClassResolver.java

@@ -74,7 +74,11 @@ public class ClassResolver
         Iterator it = mImports.iterator();
         while (it.hasNext()) {
             final String imp = (String) it.next();
-            if (imp.endsWith(aName)) {
+            // Very important to add the "." in the check below. Otherwise you
+            // when checking for "DataException", it will match on
+            // "SecurityDataException". This has been the cause of a very
+            // difficult bug to resolve!
+            if (imp.endsWith("." + aName)) {
                 if (isLoadable(imp)) {
                     return safeLoad(imp);
                 }

src/checkstyle/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java

@@ -193,7 +193,7 @@ public class SuppressionCommentFilter
             if (mLine == other.mLine) {
                 return mColumn - other.mColumn;
             }
-            
+
             return (mLine - other.mLine);
         }