java语法：jvm虚拟机

1. 演示stack、永久区、堆
2. 演示两种传引用对象的方法

Request request=new Request();
Login login=new Login();
Response response=login.doGet(request);
response.toString();

Request request=new Request();
Response response=new Response();
Login login=new Login();
login.doGet(request,response);
response.toString();

image.png