minor tweak

git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/trunk@430 f203690c-595d-4dc9-a70b-905162fa7fd2

src/java/com/healthmarketscience/jackcess/UsageMap.java

    */
   private UsageMap(Database database, ByteBuffer tableBuffer,
                    int pageNum, short rowStart)
-  throws IOException
+    throws IOException
   {
     _database = database;
     _tableBuffer = tableBuffer;
   @Override
   public String toString() {
     StringBuilder builder = new StringBuilder(
-        "page numbers (range " + _startPage + " " + _endPage + "): [");
+        "(" + _handler.getClass().getSimpleName() +
+        ") page numbers (range " + _startPage + " " + _endPage + "): [");
     PageCursor pCursor = cursor();
     while(true) {
       int nextPage = pCursor.getNextPage();