Java web programming
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Transcript of Java web programming
Java Web Programming
Week 1
what is web programming?
Why Can’t We Have a Simple Java Main Class?
How do I talk to a class?
How do you talk to a class?
How do the world talk to a class?
YEAH I KNOW THAT! THAT’S HTTP, XML, (X)HTML(5), WS .. ALL THOSE RUBBISH! BUT..
Source:http://onjava.com
Some Movie Stars’ Names For Rest Of Your Life To Dream On!
Web Server/Servlet Container/Application Server
HTTP/HTTPS : All of em’ understand these guys!
GET/POST .. again?
Browser : a genius!
Web/Application Servers
http://www.yarlithub.org:8080/yschool/crash/oops.html
Tomcat
Apache
IIS
Websphere
weblogic
Jetti! Netti
Model View Controller
Bite on JSP/Servlet
+ Servlet is your controller!+ Container understand which request is for which
servlet!+ Servlet can read the request, “call the friend” if
doesn’t know the answer! Then write the response.+ That friend can be a “Model” Or a “Service”!
+ What is written in the response is the “VIEW” .. HTML
Servlet is the controller, response is the view & person who knows the answer is the model!
Sample Servlet
Source : http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/Servlet-Tutorial-First-Servlets.html
Result in Browser
http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/Servlet-Tutorial-First-Servlets.html
Wait A Sec .. Where is this damn JSP?
– THINKWe should have written the html
content into a file!
If files vary then its fine! … But if the content vary?
An ultimate web application!
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