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Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyChapter 6I/O Streams as an Introduction to Objects and Classes Slide 6- 3Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyOverview6.1 Streams and Basic File I/O 6.2 Tools for Stream I/O6.3 Character I/O6.4 Inheritance Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley6.1Streams and Basic File I/O Slide 6- 5Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyI/O StreamsI/O refers to program input and outputInput is delivered to your program via a stream objectInput can be fromThe keyboardA fileOutput is delivered to the output device via a streamobjectOutput can be to The screenA file Slide 6- 6Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyObjectsObjects are special variables thatHave their own special-purpose functionsSet C++ apart from earlier programming languages Slide 6- 7Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyStreams and Basic File I/OFiles for I/O are the same type of files used tostore programsA stream is a flow of data.Input stream: Data flows into the programIf input stream flows from keyboard, the program willaccept data from the keyboardIf input stream flows from a file, the program will acceptdata from the fileOutput stream: Data flows out of the programTo the screenTo a file Slide 6- 8Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesleycin And cout StreamscinInput stream connected to the keyboardcout Output stream connected to the screencin and cout defined in the iostream libraryUse include directive: #include <iostream>You can declare your own streams to use with files. Slide 6- 9Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyWhy Use Files?Files allow you to store data permanently!Data output to a file lasts after the program endsAn input file can be used over and overNo typing of data again and again for testingCreate a data file or read an output file at yourconvenienceFiles allow you to deal with larger data sets Slide 6- 10Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-WesleyFile I/OReading from a fileTaking input from a fileDone from beginning to the end (for now)No backing up to read something again (OK to start over)Just as done from the keyboardWriting to a fileSending output to a fileDone from beginning to end (for now)No backing up to write something again( OK to start over)Just as done to the screen [...]... only to the stream named in the call Slide 6- 3 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Overview 6.1 Streams and Basic File I/O 6.2 Tools for Stream I/O 6.3 Character I/O 6.4 Inheritance Slide 6- 45 Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Manipulators A manipulator is a function called Introduction to Media and Technology Introduction to Media and Technology Bởi: OpenStaxCollege Facebook does more than expand one’s circle of friends from a few dozen to a few hundred It changes the way we interact with our world (Photo courtesy of Frederick M Drocks/flickr) 1/2 Introduction to Media and Technology How many good friends you have? How many people you meet up with for coffee or a movie? How many would you call with news about an illness or invite to your wedding? Now, how many “friends” you have on Facebook? Technology has changed how we interact with each other It has turned “friend” into a verb and has made it possible to share mundane news (“My dog just threw up under the bed! Ugh!”) with hundreds or even thousands of people who might know you only slightly, if at all Through the magic of Facebook, you might know about an old elementary school friend’s new job before her mother does At the same time that technology is expanding the boundaries of our social circles, various media are also changing how we perceive and interact with each other We don’t only use Facebook to keep in touch with friends; we also use it to “like” certain TV shows, products, or celebrities Even television is no longer a one-way medium but an interactive one We are encouraged to tweet, text, or call in to vote for contestants in everything from singing competitions to matchmaking endeavors—bridging the gap between our entertainment and our own lives How does technology change our lives for the better? Or does it? When you tweet a social cause or cut and paste a status update about cancer awareness on Facebook, are you promoting social change? Does the immediate and constant flow of information mean we are more aware and engaged than any society before us? Or are American Idol and Jersey Shore today’s version of ancient Rome’s “bread and circuses”––distractions and entertainment to keep the lower classes complacent to the inequities of our society? These are some of the questions that interest sociologists How might we examine these issues from a sociological perspective? A functionalist would probably focus on what social purposes technology and media serve For example, the web is both a form of technology and of media, and it links individuals and nations in a communication network that facilitates both small family discussions and global trade networks A functionalist would also be interested in the manifest functions of media and technology, as well as their role in social dysfunction Someone applying the conflict perspective would probably focus on the systematic inequality created by differential access to media and technology For example, how can middle-class Americans be sure the news they hear is an objective account of reality, unsullied by monied political interests? Someone applying the interactionist perspective to technology and the media might seek to understand the difference between the real lives we lead and the reality depicted on “reality” television shows, such as Jersey Shore Throughout this chapter, we will use our sociological imagination to explore how media and technology impact society 2/2 This page intentionally left blank An Introduction to Law and RegulationText and MaterialsIn recent years, regulation has emerged as one of the most distinct and importantfields of study in the social sciences, both for policy-makers and for scholarswho require a theoretical framework that can be applied to any social sector.This timely textbook provides a conceptual map of the field and an accessible andcritical introduction to the subject. Morgan and Yeung set out a diverse andstimulating selection of materials and give them context with a compre-hensive and critical commentary. By adopting an interdisciplinary approachand emphasising the role of law in its broader social and political context, itwill be an invaluable tool for the student coming to regulation for the firsttime. This clearly structured, academically rigorous title, with a contextualizedperspective is essential reading for all students of the subject.BRONWENMORGANis Professor of Socio-legal Studies at the University ofBristol. Her research focuses on the political economy of regulatory reformand global governance. She is the author of Social Citizenship in the Shadow ofCompetition (2003).KARENYEUNGis Professor of Law at Kings’ College London. She was auniversity lecturer at Oxford University and a Tutorial Fellow in Law atSt Anne’s College from 1996 until 2006. Her research lies in the intersectionof public law and socio-economic regulation. The Law in Context SeriesEditors: William Twining (University College London) and Christopher McCrudden(Lincoln College, Oxford)Since 1970 the Law in Context series has been in the forefront of the movement tobroaden the study of law. It has been a vehicle for the publication of innovative scholarlybooks that treat law and legal phenomena critically in their social, political and eco-nomic contexts from a variety of perspectives. The series particularly aims to publishscholarly legal writing that brings fresh perspectives to bear on new and existing areas oflaw taught in universities. A contextual approach involves treating legal subjects broadly,using materials from other social sciences, and from any other discipline that helpsto explain the operation in practice of the subject under discussion. It is hoped thatthis orientation is at once more stimulating and more realistic than the bare expositionof legal rules. The series includes original books that have a different emphasis fromtraditional legal textbooks, while maintaining the same high standards of scholarship.They are written primarily for undergraduate and graduate students of law and of otherdisciplines, but most also appeal to wider readership. In the past, most books in theseries have focused on English law, but recent publications include books on Europe law,globalisation, transnational legal processes and comparative law.Books in the SeriesAnderson, Schum & Twining: Analysis of EvidenceAshworth: Sentencing and Criminal JusticeBarton & Douglas: Law and ParenthoodBeecher-Monas: Evaluating Scientific Evidence: An InterdisciplinaryFramework for Intellectual Due ProcessBell: French Legal CulturesBercusson: European Labour LawBirkinshaw: European Public lawBirkinshaw: Freedom of Information: The Law, the Practice and the IdealCane: Atiyah’s Accidents, Compensation and the LawClarke & Kohler: Property Law: Commentary and MaterialsCollins: The Law of ContractDavies: Perspectives on Labour LawDembour: Who Believes in Human Rights?: The European Convention in Questionde Sousa Santos: Toward a New Legal Common SenseDiduck: Law’s FamiliesElworthy & Holder: Environmental Protection: Text and MaterialsFortin: Children’s Rights and the Developing LawGlover-Thomas: Reconstructing Mental Health Law and PolicyGobert & Punch: Rethinking Corporate CrimeHarlow & Rawlings: Law and Question Bank Introduction to .NET and Programming in C# 1. .NET is said to accelerate the next generation of the Internet [0.5] a) True b) False 2. The unique feature of .NET is the ___________supp ort that it provides [0.5] a) Multi-platform b) Multi-language 3. .NET is a whole new platform centered around the Intranet [0.5] a) True b) False 4. A program in .NET is first compiled by the language specific compiler into __________________ [1.0] a) Common Language c) Intermediate Language b) Runtime Language d) Visual Basic 5. What is the role of the CLR (Select all that apply) [2.0] a) Manages memory c) Compiles program into machine code b) Compiles program to a .exe file d) Compile once and run on any CPU & OS that supports the runtime. 6. Microsoft .NET is primarily made up of the following three components. [2.0] a) Visual Studio .NET c) 3 rd party .NET services b) Microsoft .NET products and services d) .NET platform itself 7. Select the two core technologies on which the .NET platform is based. [2.5] a) XML c) Internet Protocols b) WML d) Internet computing 8. Microsoft .NET allows developers to develop applications using different languages, which run on the Unix platform [0.5] a) True b) False 9. The .NET platform is built on Internet Protocols such as _______ and _______ [1.0] a) TCP /IP c) SOAP b) IP d) HTTP 10. The .NET platform is built on the following features of the Windows 2000 server family.(Select all that apply) [1.5] a) Reliability c) Scalability b) Security d) Manageability 11. Select the core .NET Enterprise Servers [2.5] a) Commerce Server 2000 c) Apple Server b) Exchange 2000 Server d) Visual .Net Server 12. Core Microsoft .NET building block services [2.0] a) Calendar c) Dynamic delivery b) Dynamic Service d) Notification 13. _______ service allows users to handle their own rules for handling messages and notifications. [1.5] a) Notification b) Personalization 14. Select the service, which allows users to maintain their schedules thus facilitating timely and manageable interactions with other users. [1.5] a) Dynamic Service c) Notification b) Personalization d) Calendar 15. ________ allows developers and business analysts work together to define and modify business processes shared between applications. [1.0] a) Orchestration c) Common Language Runtime b) Web Service d) .Net Framework 16. Microsoft .Net was formerly known as __________ [0.5] a) NGUS c) NGWS b) MGWS d) NWGS 17. C# allows _______ use of native pointers. [0.5] a) Private c) Public b) Complete d) Restricted 18. What is the correct syntax for comment entries in C# [1.0] a) // … // c) /** … **/ b) /*… */ d) / … / 19. The public keyword can be ignored for the Main function in C#. [1.0] a) True b) False 20. A C# program can have only one using directive [0.5] a) True b) False 21. The WriteLine method is a part of the ______ class [1.0] a) System c) Console b) System.Output d) Console.System 22. C# is considered as a modern replacement for the language/s like: (Choose all that apply) [0.5] a) Java c) C++ b) C d) VB 23. C# is a ____________language. [0.5] a) purely Procedure-Oriented c) Procedure-Oriented and Object-Oriented b) partially Procedure-Oriented d) purely Object-Oriented 24. Manual memory management needs to be done in C# [0.5] a) True b) False 1 CHAPTER 1 Introduction to Portals and Portlets T HIS BOOK IS FOR SOFTWARE developers and designers who develop Java applica- tions for portals. We cover version 1.0 of the Java portlet API, also known as Java Specification Request (JSR) 168. Portlets are the individual components that pro- vide content for a portal. Portals aggregate one or more portlets into web pages, which are usually personalized or customized for individual users or groups of users. Some portals also support mobile devices and voice support. Before the release of this portlet API, each portal had a different API for develop- ing portlets. Most Java portal vendors will support the JSR 168 standard in addition to their existing proprietary API. If you develop your portlets to the new portlet API standard, you can deploy them on any JSR 168-compatible server, just as any com- patible servlet container can deploy servlets. You may use the open source portal server Apache Pluto to run the portlets we write in this book. You are able to deploy your portlets on any other portals that support the standard, because none of the portlets will use any proprietary features. We use several open source software components to provide additional functionality beyond the portlet API. Some of the problems we provide solutions for in later chapters are person- alization, portal deployment, Single Sign-On (SSO), content syndication, and the porting of an existing application into a portal infrastructure. In this chapter, we discuss portals, information architecture, and background on the portlet API. Providing a Solution with Portals Usually, the decision to build a portal environment is made at a high level within an organization after users become frustrated with using applications that are not integrated and are not immediately visible. Other times, a project involving an extranet for suppliers and customers gets started, and the easiest way to aggregate security for all of these new users is through a portal’s SSO feature. In this book, we do not discuss the business case for a portal within an organization. We wrote this book for developers and architects who have chosen to use a portal server that implements the Java portlet API and need to solve technical problems. 2840ch01.qxd 7/13/04 12:43 PM Page 1 Download at Boykma.Com Chapter 1 2 From a technical perspective, a portal provides a solution for aggregating con- tent and applications from various systems for presentation to the end user. The users do not need to know how the content or functionality is provided; they just want to enjoy the benefits of a single web site and all of its services. Typically, a portal has an integrated user interface and an SSO approach for security. The software developer’s job is to take all of the systems that provide these services and add interfaces to them to work with the portal. Portlets are the individual compo- nents displayed in the portal. Prior to the introduction of the standardized portlet API, portlets had to be custom-developed for each portal server because the API was different for each server. The leading portal vendors joined to create a standard to promote portal technology. Inside the Java Community Process (JCP), the name of the standard for the first version of the Java portlet API is JSR 168. Future versions of the portlet API will have different JSR numbers. One of the problems for the designer or architect in charge of the portal proj- ect is that the existing systems do not always separate cleanly into presentation and business logic layers. Also, consider portal security and personalization when ... probably focus on what social purposes technology and media serve For example, the web is both a form of technology and of media, and it links individuals and nations in a communication network... Someone applying the interactionist perspective to technology and the media might seek to understand the difference between the real lives we lead and the reality depicted on “reality” television... the immediate and constant flow of information mean we are more aware and engaged than any society before us? Or are American Idol and Jersey Shore today’s version of ancient Rome’s “bread and