Eclipse中Java连接MySQL数据库的方法

import java.sql.DriverManager;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.ResultSet;
import com.mysql.jdbc.Statement;

public class mysql_test{
public static void main(String[] argv) throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException{
//连接数据库
String url="jdbc:mysql://localhost/xxx";//database
String user="xxx";//username
String pwd="xxx";//password
//Load Driver
Class.forName("com.mysql.jdbc.Driver").newInstance();
//Connect to MySQL
Connection conn=(Connection) DriverManager.getConnection(url,user,pwd);
//Execute SQL statement
Statement stmt=(Statement) conn.createStatement();
String sql;
sql="select * from 13_14autumn_tbl where idx='2'";
System.out.println(sql);
ResultSet rs = (ResultSet) stmt.executeQuery(sql);

//处理结果集
while (rs.next())
{
String id = rs.getString("course_id");
System.out.println(id);
}

conn.close();
}
}