TAILIEUCHUNG - HandBooks Professional Java-C-Scrip-SQL part 6

Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 6', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 2 . Servlets As applets were winding down on the client side the server side was just getting going. Servlets gave Java developers a way to write applications that would run in the browser. An application would get a request over HTTP and build a plain web page with no Java that would return to the client. Since the web pages were built server side they could take dynamic content like the results of database queries back down to the client. So-called web-based applications finally delivered the goods now you could run enterprise applications on a client. You d only have to deploy them on a server. It didn t take long to understand that the clients could be within the firewalls of a company but they didn t have to be. Since people everywhere had Internet access it opened up the possibility of selling a whole new kind of product information. The new economy was born. At least in part it was powered by Java and the companies that built the servers databases and software. Start-up companies sprung up to take advantage of this opportunity. Enormous paper wealth was created. Venture capitalists funded good ideas and bad. A drive for customers fed the fury of the storm. The rules were simple he who gets the most customers wins. Start-ups were often willing to spend far more to acquire a customer than that customer could possibly generate. Real wealth was created too. Companies like eBay and Amazon fueled a new kind of economy without buildings or walls. This new sophisticated commerce drove a new need for new tools. Sun Oracle BEA and IBM worked on new standards to enable enterprise on the Web. IBM coined the term e-business to stand for a new powerful way to serve customers. . J2EE J2EE or Java s enterprise edition included many new ways to connect to the enterprise. Under great expectations the Enterprise JavaBeans EJB spec emerged to add a rich set of tools that would let you program distributed transactional secure and persistent applications without coding

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