Web Fundamental
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This document discusses web fundamentals including HTTP, DNS, HTML, client/server architecture, and server-side and client-side coding. It covers topics like how DNS translates domain names to IP addresses, how servers provide services to clients, and the differences between server-side languages like PHP, ASP, and client-side languages like JavaScript, CSS, HTML. It also provides overviews of servlets, JSP, design patterns, and demo code examples.
Web Fundamental
- 2. Web Fundamental www.devoxx.com Basem Elsherbeny
- 3. After this presentation www.devoxx.com
- 4. Agenda • Internet • HTTP,DNS • HTML • Client/Server • Server and Client side coding • Servlet • JSP • JSF,Struts 4 www.devoxx.com
- 5. Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over 5 www.devoxx.com
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- 8. DNS • it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices worldwide. . • For example, www.example.com translates to208.77.188.166. 8 www.devoxx.com
- 9. server • a server is any combination of hardware or software designed to provide services to clients. When used alone, the term typically refers to a computer which may be running a server operating system, but is commonly used to refer to any software or dedicated hardware capable of providing services. www.devoxx.com
- 10. Server/Client Side • Server-side refers to operations that are performed by the server in a client-server relationship in computer networking • Client-side refers to operations that are performed by the client in a client-server relationship in a computer network. www.devoxx.com
- 11. Server/Client Side ● Server-side coding ●Client-side coding ● PHP ●CSS ● ASP ●HTML & DHTML ● CGI and/or Perl ●XHTML ● J2EE ● Python, e.g. Django ●Javascript ● Ruby, e.g. Ruby on Rails ●Flash ●SilverLight www.devoxx.com
- 12. HTML • HTML stands for Hyper Text Markup Language • HTML is not a programming language, it is a markup language • A markup language is a set of markup tags • HTML uses markup tags to describe web pages • . www.devoxx.com
- 13. Note • HTML is Not Programming Language. • HTML is a view Language. www.devoxx.com
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- 15. HTML • Static Not Dynamic www.devoxx.com
- 16. Servlet • A Servlet is a Java class which conforms to the Java Servlet API, a protocol by which a Java class may respond to http requests. Thus, a software developer may use a servlet to add dynamic content to a Web server using the Java platform. www.devoxx.com
- 17. Life Cycle of Servlet www.devoxx.com
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- 23. • public class NewServlet extends HttpServlet { • protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { • out.println("<html>"); out.println("<head>"); out.println("<title>Servlet NewServlet</title>"); • out.println("</head>"); out.println("<body>"); • out.println("<h1>Servlet NewServlet at " + request.getContextPath () + "</h1>"); out.println("</body>"); • out.println("</html>");} www.devoxx.com
- 24. JSP • JSP simplifies the development process, allowing programmers to input Java code directly into the HTML file or JSP file. JSP is a multi-platform, independent and portable language that complies with the Java feature of ‘write once, run anywhere. www.devoxx.com
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- 26. Life Cycle of JSP www.devoxx.com
- 28. JSP Demo www.devoxx.com
- 29. output www.devoxx.com
- 31. Demo www.devoxx.com
- 32. Demo • int x = 2,z = 2; • System.out.println(x+z+""); • System.out.println(""+x+z); • System.out.println(x+""+z); www.devoxx.com
- 33. You must Know • Web application: • JSF • Struts • Hibernate • EJB 3.0 • Mobile application: • j2ME: • Symbian www.devoxx.com
- 34. Questions www.devoxx.com