JDBC 2.0问题

public void changeData(Connection con){
  try {
   System.out.println("开始改变数据");
   Statement stm=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE , ResultSet.CONCUR_UPDATABLE);
   ResultSet rs=stm.executeQuery("select * from scott.student");
   rs.next();
   rs.updateInt(1,100);
   rs.updateString(2, "Tom");
   rs.updateString(3, "true");
   rs.updateString(4, "cs");
   rs.updateRow();
   System.out.println("改变数据结束");
   
  } catch (SQLException e) {
   e.printStackTrace();
  }
  
 } 

应该写select sid,sname,agender,sdept from scott.student