design patterns used in core java

... marketing experts and advertising agencies are interested in the language ofadvertising to find the tricks how to make advertising more effective On the other hand,linguists are interested in language ... classifying advertising as follows: (1) Basing on medium criterion, advertising types include print advertising(newspaper, magazines), broadcast advertising (radio, television), out-of-homeadvertising ... (2).The business of designing and writing advertisements (3) Advertisements considered as a group: This paper takes no advertising.” Another definition of advertising is according to the Investorwords

Ngày tải lên: 07/09/2013, 14:03

... architecture, including software In 1987, Ward Cunningham and Kent Beck used some of Alexander’sideas to develop five patterns for user-interface design They published a paper on the UI patterns at ... 2Java Enterprise Design PatternsMARK GRAND John Wiley & Sons, Inc. New York ● Chichester ● Weinheim ● Brisbane ● Singapore ● Toronto John Wiley & Sons, Inc. New York ● Chichester ● Weinheim ... exclusively on general-purpose design patterns The secondvolume moved away from design patterns to include a variety of patternsused to assign responsibilities to classes, design GUIs, write code,

Ngày tải lên: 14/08/2014, 02:20

... important thing that you should do to ensure the tency of a transaction is testing The Unit Testing and System Testing consis-patterns described in Patterns in Java, Volume 2 are useful in designing ... ObjectInputStreamobject, you can write some codethat looks like this: FileInputStream fin = new FileInputSteam("filename.ser"); ObjectInputStream obIn = new ObjectInputStream(fin); This ... existing object to contain the instanceinformation You can get an ObjectInputStreamobject to do thesethings by calling its readObjectmethod, like this: Object-Foo myObject-Foo = (Object-Foo)obIn.readObject();

Ngày tải lên: 14/08/2014, 02:20

... way of doing things and Java’s way of doing things.Remote Method Invocation (RMI) is a Java-based Object RequestBroker implementation that is part of the core Java API Because RMI isJava-based, ... preventing downtime Ÿ Using redundant components increases the complexity of a systemand the difficulty of designing, integrating, and configuring it Ÿ The use of redundant components increases ... repliccompu-ating compu-an object onto multiple computing elementswhile maintaining the illusion to the object’s clients that there is only a sin-gle object CONTEXT You are designing a knowledge

Ngày tải lên: 14/08/2014, 02:20

... an infinite loop At the beginning... writing software for a new kind of smart food processor that turns raw ingredients into cooked, ready-to-eat food by slicing, dicing, mixing, boiling, baking, ... attaching themselves to the InfoBus In the course of interacting... least interesting kind of object in the pattern Any instance of a class that calls a method through the ServiceIF interface ... serviceThread.continueUsingTrustedThread(); return intResult; } // getInfo() public void setInfo(int x) { myGuard.checkGuard(this); intArg = x; whichMethod = SET_INFO; serviceThread.continueUsingTrustedThread();

Ngày tải lên: 14/08/2014, 02:20

... server.Kitchen sink attributes that clients need only occasionally are in theKitchenSinkDataclass On the server, instances of the KitchenSinkclassalways have an associated instance of the KitchenSinkDataclass ... Dataobjects Dataobjects contain only instance data that is not usually used inthe client environment Instance data usually needed in the client envi-ronment is contained directly by SharedItemobjects ... class for just one kind ofitem, a kitchen sink A similar organization applies to many other kinds of Heavyweight/Lightweight Trang 13items It includes a KitchenSinkclass that contains attributes that

Ngày tải lên: 14/08/2014, 02:20

... object. InputStream in = actualSocket.getInputStream(); int otherBufferSize = new DataInputStream(in).readInt(); BufferedInputStream bin; bin = new BufferedInputStream(in); actualIn = new DataInputStream(bin); ... following negative values areused to indicate other types of messages mes-private static final int CLOSE_CONNECTION = -1; private static final int BLOCK_WRITES = -2; private static final int UNBLOCK_WRITES ... connection private byte[] commonInfo; private static final int PORT_NUMBER_LENGTH = 2; static final int SERIAL_NUMBER_LENGTH = 4; private int counter = 0; private int byteSize = -1; 250 ■ CHAPTER

Ngày tải lên: 14/08/2014, 02:20

... manage waiting tasks is to put them in a queue Puttingwaiting tasks in a queue ensures that they are run in the order in whichthey arrive You can choose other scheduling policies by choosing anotherdata ... theamount of time for finishing all backups is limited, designing the server toonly receive one backup file at a time may prevent the backups from fin-ishing in time You need a design that allows ... The stopmethod will succeed in ter-minating a task in many cases, when an interruptfails In order forinterruptto succeed, a task must periodically check to see if its inter-ruptedflag is set and,

Ngày tải lên: 14/08/2014, 02:20

... timekeeping terminals to indicate thebeginning of a shift and the end of a shift When a timekeeping terminalreports a timekeeping event, the time of the event is determined by thetimekeeping terminal’s ... business object is fetched, it must happen in the context of apoint in time Figure 8.2 shows this design In this design, the state of a BusinessObjectis extrinsic Its state doesnot reside in ... doesnot reside in the BusinessObjectinstance itself, but in associated instances ofBusinessObjectState The only attributes of BusinessObjectthat areintrinsic (reside within instances of the class)

Ngày tải lên: 14/08/2014, 02:20

... tions in a straightforward way opera-⁄ Organizing operations to persist a class of objects into a single face results in a highly cohesive design inter-Ÿ Managing the persistence of objects using ... these are beingused in a loop where the fetched rows are being used to drive the updates,the loop hangs since the first update waits forever to get its lock.† For this reason, to remain as independent ... transactions EngineSpecificTransaction. Classes in this role are specific to thepersistence engine being used They encapsulate the mechanismbeing used to manage transactions with the persistence engine Trang

Ngày tải lên: 14/08/2014, 02:20

... restaurant.getId(); String cuisineString = JDBCUtil.format(restaurant.getCuisine()); String govID = restaurant.getGovtIdentifier(); String minPrice = format(restaurant.getMinPrice()); String maxPrice = ... retrieving restaurant data"; throw new CBInternalException(toString(), msg, e); } // try } // instantiate(ResultSet)Thisinstantiatemethod contains the logic for looking for theobject in the ... an example of an instantiatemethod: /** * Instantiate a Restaurant object from the * current row data in a ResultSet String name = rs.getString(2); String cuisine = rs.getString(3); Trang 21thisRestaurant

Ngày tải lên: 14/08/2014, 02:20

... * Holder Class (Bill Pugh Method): Bill Pugh came up with a different approach tocreate the Singleton class using an inner static helper class Trang 15design pattern as Java ensures that any enum value is instantiated only once in a Javaprogram Since Java Enum values are globally accessible, so is the singleton ... Finally, you replace thediffering code with a template method that calls one of these new operations Usage in JDK: * All non-abstract methods of java.io.InputStream, java.io.OutputStream, java.io.Readerand java.io.Writer e.g - java.io.InputStream#skip (), java.io.InputStream#read () ... JAVA DESIGN PATTERNS By Devendra Singh @Copyright 2016 Dev S Trang 3 _This technical e-book provides information about design patterns in java in the simplest

Ngày tải lên: 04/03/2019, 10:03

... on: Pointing out the definition of web language, the process of designing web pages, classifying of static and dynamic website languages Collecting and presenting some commonly used WDT in English ... working on the function language in use and expression in these terms which during the preliminary research, I myself found prominent This causes readers certain difficulties in understanding ... and easy to gather information when you are Trang 13searching through the Internet You will find endless amounts of information, about everything, and all at your fingertips The Internet is the

Ngày tải lên: 11/12/2013, 23:48

... next several panels describe the templates used in Design Patterns and in Patterns in Java. Design Patterns template Design Patterns uses the following template: * Pattern name and classification: ... problems Mark Grand, in Patterns in Java: A Catalog of Reusable Design Patterns Illustrated with UML, adds patterns addressing problems involving concurrency, for example, and Core J2EE Patterns: Best ... collects new patterns, continues research, and takes leads in spreading the word on patterns In particular, the Hillside Group sponsors many conferences including one introducing newcomers to patterns

Ngày tải lên: 12/08/2014, 19:21

... most influential resource on object-oriented design Chapters 1, 2, and 6 are essential reading for understanding object-oriented design in general or, in particular, the role of patterns in object-oriented ... object-oriented design * Patterns in Java: A Catalog of Reusable Design Patterns Illustrated with UMLby Mark Grand (Wiley, 1998) is not as well written as Design Patterns, especially regarding general ... Ambler * "Use your singletons wisely: Know when to use singletons, and when to leave them behind"by J B Rainsberger * "Developing Java solutions using Design Patterns"by Kelby Zordrager

Ngày tải lên: 12/08/2014, 19:21

... 1: What Are Design Patterns? 12 Chapter 1 Introduction 13 Defining Design Patterns 14 The Learning Process 15 Studying Design Patterns 16 Notes on Object-Oriented Approaches 16 The Java Foundation ... 5: Design Patterns and the Java Foundation Classes 231 Chapter 27 The JFC, or Swing 232 Installing and Using Swing 232 Ideas behind Swing 232 The Swing Class Hierarchy 233 Chapter 28 Writing ... demonstrating the usefulness of design patterns in solving Java programming problems • A CD containing all of the examples in the book, so you can run, edit, and modify the complete working programs

Ngày tải lên: 12/08/2014, 19:21

... illustrate the design patterns, providing yet another way to reinforce your learning of these patterns. In addition, you’ll see UML diagrams of these programs, illustrating the interactions between ... unsigned 8-bit value short 16-bit integer int 32-bit integer long 64-bit integer float 32-bit floating point double 64-bit floating point char 16-bit character string 16-bit characters Note ... == 0) is indeed a Boolean quantity and the compiler does not print any error message. Copyright © , 2002 by James W Cooper 2 1. What are Design Patterns? 21 Defining Design Patterns 23...

Ngày tải lên: 18/10/2013, 17:15

... Part I: Interface Patterns 10 Chapter 2. Introducing Interfaces 11 Ordinary Interfaces 11 Interfaces and Obligations 12 Placing Constants in Interfaces 13 Summary 16 Beyond Ordinary Interfaces ... features built into Java. For example, Part I, Interface Patterns, begins with a chapter on ordinary Java interfaces. That chapter will challenge your understanding of the Java interface construct, ... you think that C OMPOSITE is an interface pattern? Categorizing patterns is somewhat subjective. But I hope that you will agree that thinking about the intent behind patterns and thinking about...

Ngày tải lên: 16/01/2014, 20:20

... pattern is used when creating an instance of a class is very time-consuming or complex in some way. Then, rather than creating more instances, you make copies of the original instance, modifying them ... 30 The Singleton Pattern 31 Throwing the Exception 32 Creating an Instance of the Class 32 Static Classes as Singleton Patterns 33 Creating Singleton Using a Static Method 34 20 And, in the LastFirst ... as appropriate. Prototypes can also be used whenever you need classes that differ only in the type of processing they offer, for example in parsing of strings representing numbers in different radixes. In this sense,...

Ngày tải lên: 16/01/2014, 20:20

... covering these patterns in more detail in the section ‘Categories of Design Patterns . In this book, we will take a look at a number of popular JavaScript design patterns and explore why certain patterns ... this can be done by examining the interactions and context of the patterns you are interested in so you can identify the principles that assist in organizing those patterns together in useful configurations. Once ... improve their coding skills. It's important to note that the concepts behind design patterns have actually been around in the pro- gramming industry since its inception, albeit in a less formalized...

Ngày tải lên: 12/02/2014, 12:20