[]使用JDBC时Class.forName()的作用
使用jdbc时，我们都会很自然得使用下列语句：
package com.mysql.jdbc public class driver extends nonregisteringdriver implements java.sql.driver { // ~ static fields/initializers // --------------------------------------------- // // register ourselves with the drivermanager // static { t ry { java.sql.drivermanager.registerdriver(new driver()); } catch (sqlexception e) { throw new runtimeexception("can't register driver!"); } } // ~ constructors // ----------------------- /** * construct a new driver and register it with drivermanager * * @throws sqlexception * if a database error occurs. */ public driver() throws sqlexception { // required for class.forname().newinstance() } }