连一个数据库并对返回的结果集进行操作

package com.bluedot.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnDB
{
public static String jdbcDriver="org.gjt.mm.mysql.Driver";
public static String url="jdbc:mysql://localhost:3306/test_user";
public static String name="root";
public static String password="root";

public ConnDB()
{
super();
}
public static Connection getConnection()
{
Connection conn=null;
try
{
Class.forName(jdbcDriver).newInstance();
conn=DriverManager.getConnection(url,name,password);
}
catch (InstantiationException e)
{
e.printStackTrace();
}
catch (IllegalAccessException e)
{
e.printStackTrace();
}
catch (ClassNotFoundException e)
{
e.printStackTrace();
}
catch (SQLException e)
{
e.printStackTrace();
}
return conn;
}

}