SSL usage in JAVA servlet and JSP based web page

I have several question to adjust security setting of my web page.
First of all, When do we need SSL in web pages, are you advise to use this technique in medium level security needed web page which means no commercial data just information based..And Second question is if I need , How do I use SSL (secure socket layer) in my web page or what do I need to implement it in my JSP pages?
My IDE is Websphere 5.0 and server is tomcat 4.1 and database server MS sql server 2000.
Please don't answer my question with just giving URL's, try to explain me something detailed and supported with URL's and examples. I am just a beginner in security topics (specially SSL).
If you help me, I am really appreciated.
Thanks in advance.
Ergin

I have several question to adjust security setting of my web page.
First of all, When do we need SSL in web pages, are you advise to use this technique in medium level security needed web page which means no commercial data just information based..And Second question is if I need , How do I use SSL (secure socket layer) in my web page or what do I need to implement it in my JSP pages?
My IDE is Websphere 5.0 and server is tomcat 4.1 and database server MS sql server 2000.
Please don't answer my question with just giving URL's, try to explain me something detailed and supported with URL's and examples. I am just a beginner in security topics (specially SSL).
If you help me, I am really appreciated.
Thanks in advance.
Ergin

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