Kuldeep presentation ppt
- 1. PRESENTATION ON Technical training at Road Ahead Technologies By Kuldeep Khichar(7th Sem IT) 1
- 2. TOPICS ON WHICH I PURSUED MY TRANNING JAVA J2EE ->SERVLET ->JSP ->STRUTS ONLINE EXAM PROJECT 2
- 3. • The Java platform has attracted more than 6.5 million software developers. • Java technology's versatility, efficiency, platform portability, and security make it the ideal technology for network computing. • From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere! 3
- 4. Why Java? It’s the current “hot” language It’s almost entirely object-oriented It has a vast library of predefined objects and operations It’s more platform independent this makes it great for Web programming It’s more secure It isn’t C++
- 5. Java Technology Java Technology Workgroup High-End Enabled Devices Enabled Desktop Server Server Umesh Bellur
- 6. Java Virtual Machine The .class files generated by the compiler are not executable binaries so Java combines compilation and interpretation Instead, they contain “byte-codes” to be executed by the Java Virtual Machine other languages have done this, e.g. UCSD Pascal This approach provides platform independence, and greater security
- 7. • Comments are almost like C++ • Primitive data types are like C • Declarations look like C • Expressions are like C(Assignment statements , Arithmetic operators, Boolean operators, Comparisons operators • JAVA does not have pointers or pointer arithmetic • Control statements are like C but conditions must be boolean 7
- 8. • In C, almost everything is in functions • In Java, almost everything is in classes • There is often only one class per file • There must be only one public class per file • The file name must be the same as the name of that public class, but with a .java extension 8
- 9. • Java is case-sensitive; maxval, maxVal, and MaxVal are three different names • Class names begin with a capital letter • All other names begin with a lowercase letter • Subsequent words are capitalized: theBigOne • Underscores are not used in names • These are very strong conventions! 9
- 10. • Stands for “Java 2, Enterprise Edition” • It is a collection of standards o JDBC, JNDI, JMX, JMS • It is a component technology o Enterprise JavaBeans • It is an “application server” o Following in the footsteps of Component Transaction Monitors 10
- 11. • High Availability • Security • Reliability • Scalability …of Enterprise Information Services (EISs), …Usually in a multitier environment. 11
- 12. Various models of architecture Trad itiona l n-Ti er Client-Server Component-based n-Tier ?? scenario Layered su it which e would ch itectur Wh ich ar Distributed nature of application Scalability Depends on Performance J2EE/ Session 3/Slide 12 of 49 Memory Management
- 13. Client-Server Architecture CLIENT SERVER Application Business Logic Data Presentation Logic Clear division between Application and Data Entire processing load on client Server acts as traffic controller 2-Tier Architecture J2EE/ Session 3/Slide 13 of 49
- 14. MIDDLE TIER/ CLIENT TIER APPLICATION TIER DATA/EIS TIER Presentation Business DATA Logic Logic Receives request for data, retrieves it, and returns it to client J2EE/ Session 3/Slide 14 of 49
- 15. l l Fir ewa r wse Bro Application Logic= Presentation logic + Business Logic (No physical demarcation between the two) Infrastructure services provide additional functionalities required by application, such as messaging services and transactional services. J2EE/ Session 3/Slide 15 of 49
- 16. e bas re ata wa c D le L ogi idd er n ess r M ay t atio Busin aye L ba s e sen er L M a Dat yer Pre ay L I La D Component A D L Component B Database E Component C W A R E JDBC-ODBC Bridge, J2EE/ Session 3/Slide 16 of 49 perhaps
- 17. • Java Servlet technology provides Web developers with a simple, consistent mechanism for extending the functionality of a Web server and for accessing existing business systems. • A servlet can almost be thought of as an applet that runs on the server side--without a face. • Java servlets make many Web applications possible. • Servlet can process data which was POSTed over HTTPS using an HTML FORM, say, an order-entry, and applying the business logic used to update a company's order database. 17
- 18. Hierarchy : Servlet HttpServlet|GenericServlet MyServlet
- 19. What is JSP Technology? Enables separation of business logic from presentation Presentation is in the form of HTML or XML/XSLT Business logic is implemented as Java Beans or custom tags Better maintainability, reusability Extensible via custom tags Builds on Servlet technology Umesh Bellur
- 20. • Apache Tomcat is developed in an open environment and released under the Apache Software License. • Apache Tomcat is an open source software implementation of the Java Servlet and Java Server pages technologies. • Apache Tomcat is planned to be a collaboration of the best-of-breed developers from around the world. Fraud Management System
- 21. • Apache Tomcat is developed in an open environment and released under the Apache Software License. • Apache Tomcat is an open source software implementation of the Java Servlet and Java Server pages technologies. • Apache Tomcat is planned to be a collaboration of the best-of-breed developers from around the world. Fraud Management System
- 22. Servers A server is a computer that responds to requests from a client Typical requests: provide a web page, upload or download a file, send email A server is also the software that responds to these requests; a client could be the browser or other software making these requests Typically, your little computer is the client, and someone else’s big computer is the server However, any computer can be a server It is not unusual to have server software and client software running on the same computer 22
- 23. Apache Apache is a very popular server 66% of the web sites on the Internet use Apache Apache is: Full-featured and extensible Efficient Robust Secure (at least, more secure than other servers) Up to date with current standards Open source Free Why use anything else? 23
- 24. • OPERATIONAL o Simple and informative GUI o Easily employed on User & Client side of application • TECHNICAL o Build on J2EE(Servlet & JSP) and ORACLE supported by win 7,XP,VISTA,etc • ECONOMIC o Cost efficient o Consumes low memory space
- 25. • This project can be upgrade with the use of Struts Framework and use of ORACLE 11g as database to further improve security & reliability • The next stage of development will be for the whole country • It can be further upgraded according to the need of Public or Private Sector demands
- 26. • This Training has provided us the experience of working in a company environment • Development of this Project not only provide the basic knowledge of tools utilized but also working with a PROJECT THINK APPROACH
- 27. ….Thank you for your kind attention…. Queries ? ? 27
Editor's Notes
- #6: By now, most of you know there are three flavors of Java - Micro Edition, Standard Edition, and Enterprise Edition. These three flavors of Java represent three distinct target market segments each of which has unique issues and requirements that need to be addressed somewhat differently. Micro Edition addresses of market segment of small devices such as PDAs, cell phones and settop boxe, which are typically constrained in terms of memory space and processing power. Standard Edition represents the Java that we all know and love, a Java for desktop and workgroup server environments that require a full feature functionalities including rich graphical user interface. Enterprise Edition covers the Java platform for developing and deploying enterprise qualitiy applications which are typically transactional, reliable and secure. Also note that the “Enterprise Edition” box in the graphic extends into the standard edition, that is, Enterprise edition is built over standard edition.
- #20: JSP, Java Server Pages, was introduced as a follow-on technology to the Servlet. Even though the Servlet solves many problems associated with CGI for dynamic contents generation, it has one downside. The downside is that, under Servlet, the presentation, typically HTML pages, has to be generated as part of the servlet Java code, for example, using printf statement. What this means is that whenever you have to make some change to the presentation, the Java code has to be changed and then recompiled, redeployed. This in turn result in maintenance problem of your applications. Also it makes web-page prototyping effort rather a difficult task. JSP is designed to address of this shortcoming of the Servlet while maintaining all the benefits of Servlet. That is, it provides a clear separation between the presentation and business logic code. That is, the presentation will be designed by Web page designers in the form of either HTML or XML or JSP page while the business logic will be implemented by Java programmers either in the form of Java Beans or custom tags. This separation will result in a better maintainability of both presentation pages and business code. And because the business logic is encapsulated into Java beans or custom tags, it increased reusability of the code as well. I mentioned about custom tags. Custom tags are basically specialized Java beans which encapsulate the application-specific business logic. The functionality of enterprise applications can be extended by building more custom tags. Finally, JSP technology is built over servlet. In fact, JSP pages when deployed get converted into servlet first. Because it is built over servlet, it maintains all the benefits of servlet. For example, all the ready-to-use objects in a servlet such as session objects can be also available to JSP page designers and custom tag developers.