java 联接操作mysql

import  java.sql. * ;
import  java.lang. * ;
import  com.mysql.jdbc.Driver;
public   class  javaToDoMysql {
     public   static  java.sql.Statement connect()  throws  Exception {
        String location  =   " 127.0.0.1 " ;
        String database  =   " hongfu " ;
        String root  =   " root " ;
        String passwd  =   " root " ;
        String connName  =   " jdbc:mysql:// " + location + " :3306/ " + database + " ?user= " + root + " &password= " + passwd;
        Class.forName( " com.mysql.jdbc.Driver " ).newInstance();
        Connection connection  =  DriverManager.getConnection(connName);
        Statement st  =  connection.createStatement();
         return  st;
    }
     public   static   void  query()  throws  Exception {
        Statement dbh  =  connect();
        ResultSet rs  =  dbh.executeQuery( " select id,name from test " );
         while (rs.next()) {
            System.out.println(rs.getString( " id " ) + " , " + rs.getString( " name " ));
        }
    }
     public   static   void  main(String[] args)  throws  Exception {
        query();
    }

}