fix checkstyle errors

src/checkstyle/com/puppycrawl/tools/checkstyle/CheckStyleTask.java

@@ -195,7 +195,7 @@ public class CheckStyleTask
     /** @param aFail whether to fail if a violation is found **/
     public void setFailOnViolation(boolean aFail)
     {
-	mFailOnViolation = aFail;
+        mFailOnViolation = aFail;
     }
 
     /** @param aNum **/

src/checkstyle/com/puppycrawl/tools/checkstyle/Checker.java

@@ -198,12 +198,14 @@ class Checker
 
     /**
      * Parses and returns the AST for a file.
-     * @return the AST
+     * @param aFileName name of file read
      * @param aReader the Reader to generate the AST
-     * @throws FileNotFoundException error occurred
-     * @throws RecognitionException error occurred
-     * @throws TokenStreamException error occurred
-     **/
+     * @return the AST
+     * @exception FileNotFoundException error occurred
+     * @exception RecognitionException error occurred
+     * @exception TokenStreamException error occurred
+     *
+     */
     private AST getAST(String aFileName, Reader aReader)
         throws FileNotFoundException, RecognitionException, TokenStreamException
     {