Difference between ASP and JSP

Hi, I used to use ASP for creating dynamic web-application, but due to gonna to maintain some of the web application in JSP, so i got to learn JSP.
I'm here would like to know some of the JSP fundamental before starting my JSP training. Below are my questions.

• As we know, in ASP the data can be passed between pages by using Request.QueryString, Hidden Input and Session. How about JSP?
  
• Does JSP maintain state by using session object as well?
  
• Can JSP support COM components? (For my understanding it should be can as JSP support IIS).

Thanks.

Well here's what I know.

1. Yes, JSP can handle the query string, any information posted from a form (hidden fields) and it also has session management.
   
2. Yep, JSP has session object you can use.
   
3. I think so, but I'm not sure.