Java 利用游标实现分页

public List<Message> getByPage(int page) {
		// TODO Auto-generated method stub
		
		String sql = "select * from message";
		Message message = null;
		DateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
		List<Message> list = new ArrayList<Message>();
		
		try {
			
			connection = super.getConnection();
			
			stmt = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
			
			rs = stmt.executeQuery(sql);
			
			rs.last();
			
			int rowCount = rs.getRow();
			System.out.println("留言总数"  + rowCount);
			if(rowCount == 0)
			{
				//没有任何留言
				return null;
			}
			
			int countPerPage = 3;
			//int pageCount = (rowCount + countPerPage - 1) / countPerPage;
			rs.absolute((page - 1) * countPerPage + 1);
			
			int i = 0;
	  		
	  		while(i < countPerPage && !rs.isAfterLast())
	  		{
	  			message = new Message();
				message.setId(rs.getInt("id"));
				message.setMessage(rs.getString("message"));
				message.setAuthor(rs.getString("author"));
				message.setPosttime(rs.getString("posttime"));

				list.add(message);
				i++;
	  			rs.next();
	  		}
			
	  		super.closeConnection(connection, stmt, null);
	  		
		}catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		connection = null;
		stmt = null;
		rs = null;
		
		return list;
	}