import和class.forName均加载类文件。当我举一个在jsp文件中导入mysql数据的示例时，需要通过class.forName导入驱动程序类。当我通过import语句导入jdbc驱动程序时，它无法从tomcat服务器中的mysql中获取数据。
1 : import ==> loads the class when you call any instance of it or call anything by class reference ==> loads the class when call is made 2 : Class.forName(""); ==> loads the class in the jvm immediately
如果类具有静态块，则可以看出差异
==> import will not call the static block ==> Class.forName("") will call the static block
在你的情况下
===> Driver class when loaded by Class.forName("") , executes its static block , which published the driver ==> Simply importing the Driver class wont execute the static block and thus your Driver will not be published for connection objects to be created
