Brockhaus WebContainer

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Brockhaus WebContainer

  1. 1. Session: Introducing Web Applications The Internet and the WorldWideWeb Web Technologies an overview Java EE and Web Applications Technological alternatives 1 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  2. 2. Objectives ✔ Historical overview ✔ Technological characteristics of web-based Applications ➢ Definition of a "Web-Application" ➢ Technological features ● URLs ● HTTP and HTML ● Request / Response ✔ Java EE Web Applications ➢ Structure in accordance with the Servlet 2.3 Spezification ➢ Deployment ✔ Hands on: Creating and deploying a simple Web Application 2 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  3. 3. Module 1- The Internet and the WorldWideWeb 3 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  4. 4. What is the internet So, what is it? ✔ A network of networks, joining many government, university and private computers together and providing an infrastructure for the use of E-mail, bulletin boards, file archives, hypertext documents, databases and other computational resources ✔ The vast collection of computer networks which form and act as a single huge network for transport of data and messages across distances which can be anywhere from the same office to anywhere in the world. 4 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  5. 5. What is the internet History: Connecting ✔ 1958 – After USSR launches Sputnik, US forms the Advanced Research Projects Agency (ARPA), the following year, within the Department of Defense (DoD) to establish US lead in science and technology applicable to the military ✔ 1961 – First published work on packet switching Lawrence Roberts (“Information Flow in Large Communication Nets”, Leonard Kleinrock, MIT graduate student) ✔ 1967-1972 – Vint Cerf, graduate student in Kleinrock’s lab, works on application level protocols for the ARPANET (file transfer and Telnet protocols) ✔ 1971 - Ray Tomlinson of BBN writes email application; Leonard Kleinrock derived from two existing: an intra-machine email program (SENDMSG) and an experimental file transfer program (CPYNET) 5 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  6. 6. What is the internet History: Protocols like TCP/IP ✔ 1974 – First full draft of TCP produced ✔ 1977 - First three-network TCP/IP based interconnection demonstrated linking SATNET, PRNET and ARPANET in a path leading from Menlo Park, CA to Univ. College London and back to USC/ISI (Marina del Ray, CA) Robert Kahn co-designer of TCP/IP ✔ 1981 – Term “Internet” coined to mean collection of interconnected networks ✔ 1982 – ISO releases OSI seven layer model; actual protocols die but model is influential 6 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  7. 7. What is the internet History: the boom ✔ 1990 – ARPANET ceases to exist ✔ 1990 – Tim Berners-Lee develops hypertext system with initial versions of HTML and HTTP and first GUI web browser called “WorldWideWeb” ✔ 1993 – Mosaic, a GUI web browser, written by Marc Andreesen and Eric Bina at NCSA takes world by storm Tim Berners-Lee (showed in-line images and was easy to install); Mark Andreesen 7 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  8. 8. What is the internet History: the boom ✔ 1995 – Sun launches Java ✔ 1995 - Traditional online dial-up systems (Compuserve, America Online, Prodigy) begin to provide Internet access ✔ 1995 - Registration of domain names no longer free ✔ 2001: 150 – 175 million hosts, 31.000.000 Domain names ✔ 2002: over 200 million hosts By 2010, about 80% of the planet will be on the Internet 8 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt
  9. 9. Economic impact Forecast: Worldwide e-Commerce Sales In billions of $ $9,000 $8,758 $8,000 $7,612 $1,156 Worldwide e-commerce $7,000 $896 spending projected to $6,326 grow at CAGR of 23%, $6,000 $5,079 $726 exceeding $8.75 trillion $5,000 $563 in 2009 $3,824 $4,000 $7,602 $417 $3,000 $5,600 $6,716 The growth of B2B $2,000 $4,516 spending is comparably $3,407 strong at CAGR of 22%, $1,000 amounting to $7.6 $- trillion by 2009 2005 2006 2007 2008 2009 B2B B2C Source: IDC, Worldwide Internet Usage and Commerce 2005-2009 Forecast update, April 2007 9 Copyright by Brockhaus GmbH, alle Rechte reserviert, unautorisierte Vervielfältigung untersagt

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