package javabean;import java.sql.*;public class Connect{    String url;    String sql;    Connection conn;    Statement stmt;    ResultSet rs;    public Connect()    {        url = "jdbc:mysql://localhost/testdb?useUnicode=true&characterEncoding=GBK";        rs = null;    }    public ResultSet executeQuery(String s)    {        try        {            Class.forName("org.gjt.mm.mysql.Driver");            conn = DriverManager.getConnection(url, "", "");            stmt = conn.createStatement();            rs = stmt.executeQuery(s);        }        catch(Exception exception)        {            System.err.println("Link Error" + exception.getMessage());        }        return rs;    }}