sams teach yourself c in 21 days free download pdf

... name)method in JobBean corresponds to findByPrimaryKey(String name)in the JobLocalHomeinterface • The ejbFindByCustomer(String customer)method in JobBeancorresponds to findbyCustomer(String customer)in ... (String ref, String customer) throws CreateException; 10: JobLocal findByPrimaryKey(JobPK key) throws FinderException; 11: Collection findByCustomer(String customer) throws FinderException; 12: Collection ... “business logic.” Business logic refers to the collection of rules, constraints, procedures and practices put in place by the business users to conduct their business Some of the rules and straints

Ngày tải lên: 13/08/2014, 08:21

... final static String JNDI = “sams/book”; public static void main(String[] args) { try { Context ic = new InitialContext(); ic.bind(JNDI,”Teach Yourself J2EE in 21 Days”); System.out.println(“Bound ... EJB container under the context java:comp/env: jdbc/Agency InitialContext ic = new InitialContext(); dataSource = (DataSource)ic.lookup(“java:comp/env/jdbc/Agency”); Resource references are defined ... 95 Continued public static void main(String[] args) { try { Context ic = new InitialContext(); Context ctx = (Context)ic.lookup(“sams”); String name = (String)ctx.lookup(“book”); System.out.println(name);

Ngày tải lên: 13/08/2014, 08:21

... and process the remaining lines, it is acting as a resource manager. In the EJB specification, these two responsibilities are split In principle, you can think of the EJB container as acting as ... +getEJBLocalObject():EJBLocalO +getEJBObject():EJBObject +getPrimaryKey():Object +setEJBLocalObject(pO:EJBObje interface SessionContext +getEJBLocalObject():EJBLocalO +getEJBObject():EJBObject interface ... CMTD bean can call setRollbackOnly().This instructs the EJB container to prevent the transaction from being committed Thebean cannot rollback the transaction directly, because the transaction itself

Ngày tải lên: 13/08/2014, 08:21

... messageSender.sendApplicant(applicant.getLogin(),true); } catch (CreateException e) { error(“Error adding applicant “+login,e); } LISTING 10.4 Continued Trang 24catch (JMSException e) { error(“Error sending applicant ... matchedHome = (MatchedLocalHome)ic.lookup( ➥ “java:comp/env/ejb/MatchedLocal”); } catch (NamingException ex) { error(“Error connecting to java:comp/env/ejb/MatchedLocal:”,ex); } } The ejbCreate()method ... ic = new InitialContext(); 84: applicantHome = (ApplicantLocalHome)ic.lookup( 85: ➥ “java:comp/env/ejb/ApplicantLocal”); 86: } 87: catch (NamingException ex) { 88: error(“Error connecting

Ngày tải lên: 13/08/2014, 08:21

... ex) { 25: context.log(“NamingException in AgencyTableServlet.init”, ex); 26: } 27: catch (ClassCastException ex) { 28: context.log(“ClassCastException in AgencyTableServlet.init”, ➥ex); ... errors causing the compilation to fail • HTML errors causing the page to display incorrectlyFinding and correcting these errors can be quite problematic because the information youneed to discover ... the Web context and can be used by any othercomponent in the Web application The Web context is accessed using the implicitobject called application The following code creates an instance of a

Ngày tải lên: 13/08/2014, 08:21

... java.security.Principal getCallerPrincipal()returns an object defining theprincipal calling the method The Principalclass defines a getName()methodthat returns the name of the principal The getCallerPrincipal()method ... restrict the way an appli-cation assembler can combine beans from different sources Defining EJB Security Defining security for an EJB involves • Defining one or more roles to control access to ... Constraints section, click Add to add a new constraint accept thedefault name of SecurityConstraintbecause changing it has no effect (the name is not saved in the DD) 2 In the Authorized Roles section,

Ngày tải lên: 13/08/2014, 08:21

... following example shows one way of inserting a piece of JavaScript into your Webpage (using comments, as described in the “Adding Comments” section later in thischapter, is a better approach): Caution ... Facade interface to offer a coarse-grained, business-oriented interface inplace of the underlying entity bean’s fine-grained, data-oriented interface can fre-quently offset any reduction in performance ... describing certain aspects, including thefollowing: • A statement of the problem that the pattern addresses This can include a list of conflicting requirements and issues that need to be balanced—known

Ngày tải lên: 13/08/2014, 08:21

... you have an interface (portType), you can define the protocols overwhich that interface can be accessed The binding element (lines 25–40) creates abinding, called HelloServerSoapBinding, between ... HelloServerPortTypeandSOAP Within this WSDL binding, a SOAP binding (soap:binding) is defined Because SOAP can work with a variety of underlying transports and it can work in an RPC-centric or document-centric way, ... out-• Finally, an instance of the service is defined in the WSDL serviceelement (lines42–46) A WSDL servicecontains a list of WSDL portelements Each portele-ment defines a specific instance of

Ngày tải lên: 13/08/2014, 08:21

... BookManagerEJB2.java,846-847 CceConnectionSpec class,838 home interface, 837IndexedRecord object, 840InteractionSpec interface,839 LocalTransaction interface,845 MappedRecord object, 840 methodsbegin(), 845close(), 841createInteraction(), ... such as Web Components and EJBs See also Container. com-Connector See JCA (Java Connector Architecture). Container A container provides services for a component These services can include lifecycle ... Local Interface A local interface is a business- or data-access interface defined by an EJB that is intended to be used by clients running in the same server Using a local inter- face reduces

Ngày tải lên: 13/08/2014, 08:21

... 418 C HAPTER 12 Tapping into OOP: Interfaces 421 Interfaces: A First Look 422 Classes Versus Interfaces .422 Using Interfaces .423 Why Use Interfaces? .423 Defining Interfaces .424 Defining an Interface ... feedback@samspublishing.com Mail: Candace Hall, Executive Editor Sams Publishing 800 East 96th Street Indianapolis, IN 46240 USA Trang 28Welcome to Sams Teach Yourself the C# Language in 21 Days ... build basic C# programs on your own Trang 34D AY 1Getting Started with C# Welcome to Sams Teach Yourself C# in 21 Days! In today’s lesson, you begin the process of becoming a proficient C# programmer

Ngày tải lên: 13/08/2014, 08:20

... can have the compiler avoid checking the code This is done with the unchecked key-word, as illustrated in Listing 2.8 L ISTING 2.8 Unchecked.cs—Marking Code as Unchecked 18: Console.WriteLine( ... = Z ch2 = x This listing illustrates two concepts First, in Lines 10–11, you see how a charac-ter can be assigned to a variable of type char It is as simple as including the character in single ... maintaining a contact list, monitoring the stockmarket, keeping a budget, or tracking the price of snickerdoodles, the information(names, stock prices, expense amounts, or prices) is kept within

Ngày tải lên: 13/08/2014, 08:20

... mighthave occurred in the code within the trystatement code You can include a catchstate-ment that is more specific—in fact, you can write a catchstatement for a specific excep-tion Listing 9.4 includes ... Exception Information In Listing 9.2, the catchstatement catches any exception that might occur within the try statement’s code In addition to generically catching thrown exceptions, you can mine ... might occur, a second catchstatement is included in Lines 25–28 This catchincludes the general Exceptiontype parameter, so it will catch any other exceptions that might occur Replace Line 16

Ngày tải lên: 13/08/2014, 08:20

... the ControlAppBconstructor is called to create the new ControlAppB A constructor has been included in Lines 10–13 of the listing The structor again has one simple call,InitializeComponent This call ... worth touching on a few of them You can check the online documentation for a complete accounting of all the functionality available with this class Customizing the Caption Bar on a Form Listing 16.1 ... 22previ-Looking at this listing, you can see that the code is broken into a couple of methodsinstead of being placed in the Mainmethod Additionally, you can see that rather thandeclaring a specific instance

Ngày tải lên: 13/08/2014, 08:20

... Debugger Try single-stepping once in the FreeSpace script to see how the highlight moves down a line of code in the Script Debugger. Another Script Debugger debugging technique involves accessing variables ... the command, C:\WINNT\SYSTEM32\CSCRIPT.EXE, describes the location of the CSCRIPT executable on my computer If you have Windows NT loaded in a different directory than C:\WINNT, obviously the command ... basic check is a check to determine if sufficient parameters were specified This is a very easy check to implement using either VBScript or JScript Here’s a common pattern to check for sufficient

Ngày tải lên: 13/08/2014, 08:21

... following all the links it can find. 2 What is a relevance metric? A relevance metric computes how well a particular page answers a query string It takes into account the structure and contents ... character. How Can I Break a Single VBScript Statement into Multiple Lines? You can break a single VBScript statement into multiple lines by using the _ underscore character For example, the string ... (order ing), 260 track-account.asp page, 260-261showorders.asp page,262-263 showOrderStatus method,263-264 accounts Administrator, 331-332CyberCash, 241-242 ACID test, 214 acquiring financial institu-

Ngày tải lên: 13/08/2014, 08:21

... language instructions created by the compiler are called object code, and the disk file containing them is called an object file. - Getting Started with C From: Sams Teach Yourself C in 21 Days, Fourth ... statement in main(). The #include Directive (Line 2) The #include directive instructs the C compiler to add the contents of an include file into your program during compilation. An include file ... type within the code appear in italic monospace. New or important terms appear in italic. Contents Next > Save to MyInformIT - Introduction From: Sams Teach Yourself C in 21 Days, Fourth...

Ngày tải lên: 26/01/2014, 15:20

... stored locally within an office and accessed from any computer attached to the network. After the Apple Macintosh introduced a friendly graphical user interface, computers were not only inexpensive ... used * in the SELECT clause, which causes all E ASCII Table F Answers to Quizzes and Excercises © Copyright, Macmillan Computer Publishing. All rights reserved. use client/server computing of ... the local area network (LAN) and its integration into offices across the world. Although users were accustomed to terminal connections to a corporate mainframe, now word processing files could...

Ngày tải lên: 06/08/2013, 17:39

... program. You can include C+ +-style comments within a block that is “commented out” by C- style comments; everything, including the C+ +-style comments, is ignored between the comment marks. Using Comments As ... and its application in C+ + is discussed on Day 12, “Inheritance” and Day 15, “Advanced Inheritance.” Inheritance, in computer science, is the creation of new objects from other objects that are ... 85 Exercises 85 5 Functions 87 What Is a Function? 88 Declaring and Defining Functions 88 Declaring the Function 89 Function Prototypes 89 Defining the Function 91 Execution of Functions 93 Local...

Ngày tải lên: 20/10/2013, 17:15

... edit the source HTML at all! Defining Cascading The term “Cascading in Cascading Style Sheets refers to a specific way in which browsers determine which styles to apply to a specific part of the ... design, and he teaches online courses in Web accessibility. In addition to writing, speaking at conferences, and teaching online courses, Kynn is the cofounder of Idyll Mountain Internet (http://www.idyllmtn.com/), a ... watermark. Contents Introduction 1 Part I Introduction to Cascading Style Sheets 7 Hour 1 Understanding Cascading Style Sheets 9 What Are Cascading Style Sheets? 10 Defining Style Sheets 10 Defining Cascading...

Ngày tải lên: 21/01/2014, 16:20

... watermark. Class Selectors in CSS Once you’ve defined a class in your HTML, you can use it as a class selector in CSS. Class selectors are indicated by a period (.) before the name of the class, ... property A Combining selectors A Combining declarations A The <link> tag in HTML A How to Read the Grades As you can see, all of the CSS features on this report card, which were introduced in Hour ... to the CSS specification, meaning that the buggy CSS implementation in Internet Explorer 3 really isn’t a factor in current CSS usage. The current front-runner in broken browsers—causing the...

Ngày tải lên: 21/01/2014, 16:20