public static JdbcRowSetResourceBundle getJdbcRowSetResourceBundle()
    throws IOException {

         if(jpResBundle == null){
             synchronized(JdbcRowSetResourceBundle.class) {
                if(jpResBundle == null){
                    jpResBundle = new JdbcRowSetResourceBundle();
                } //end if
             } //end synchronized block
         } //end if
         return jpResBundle;
    }
This method is used to get a handle to the
initialized instance of this class. Note that
at any time there is only one instance of this
class initialized which will be returned.

@throws IOException if unable to find the RowSetResourceBundle.properties
src/main/java/org/replicadb/rowset/sun/rowset/JdbcRowSetResourceBundle.java