b) 获取scofield的English成绩信息

import java.sql.*;

public class mysql_qurty {

 

    /**

     * @param args

     */

    //JDBC DRIVER and DB

    static final String  DRIVER="com.mysql.jdbc.Driver";

    static final String DB="jdbc:mysql://localhost/test";

    //Database auth

    static final String USER="root";

    static final String PASSWD="root";

 

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        Connection conn=null;

        Statement stmt=null;

        ResultSet rs=null;

        try {

            //加载驱动程序

            Class.forName(DRIVER);

            System.out.println("Connecting to a selected database...");

            //打开一个连接

            conn=DriverManager.getConnection(DB, USER, PASSWD);

            //执行一个查询

            stmt=conn.createStatement();

            String sql="select name,English from student where name='scofield' ";

            //获得结果集

            rs=stmt.executeQuery(sql);

            System.out.println("name"+"\t\t"+"English");

            while(rs.next())

            {

                System.out.print(rs.getString(1)+"\t\t");

                System.out.println(rs.getInt(2));

            }

        } catch (ClassNotFoundException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }catch (SQLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }finally

        {

            if(rs!=null)

                try {

                    rs.close();

                } catch (SQLException e1) {

                    // TODO Auto-generated catch block

                    e1.printStackTrace();

                }

            if(stmt!=null)

                try {

                    stmt.close();

                } catch (SQLException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

            if(conn!=null)

                try {

                    conn.close();

                } catch (SQLException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

        }

    }

}