Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);  ResultSet rs = stmt.executeQuery(sql);  int colcount=rs.getMetaData().getColumnCount();  int rowcount=0;  if(rs.next())  {   rs.last();   rowcount=rs.getRow();   rs.first();  }

 

 

注意点：

必须先指定：stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);