4  class hierarchies and abstract classes

... concepts of abstract classes and develop a program which will help the core team of Blueprint Garments to the presentation and audit successfully Using the concepts of abstract classes and its implementation, ... implementation, create an abstract class Clothing and its abstract methods include Sales, Materials, CommonWear Also, derive subclasses TrendSetting, ClimateControl, Sports and display the required ... The African and Asian elephants are separate species African elephants are found in 38 countries of Africa and stand up to 4m and weigh around 7000kg Asian elephants are 3.4 m tall and weigh 5,400...

Ngày tải lên: 02/08/2014, 10:20

... from various classes and places them inside another class Aggregation, therefore, reuses classes by assembling objects of existing classes to define, at least in part, the data members and methods ... of classes is established In the preceding example, BoundedCounter is a subclass of Counter, and Counter is a superclass of BoundedCounter By default, all classes are derived from the root class ... rather than classes Syntactically, one class inherits from another by placing a colon (:) between the name of the derived class and the name of the base class In our next example, class BoundedCounter...

Ngày tải lên: 05/10/2013, 05:20

... hierarchy containing a root node and several levels of subordinates 372 CHAPTER 12 TREES, HIERARCHIES, AND GRAPHS Figure 12-3 A hierarchy must have exactly one root node, and each nonroot node must ... routinely applied to trees and hierarchies, but I’ve personally found that it can get confusing trying to figure out which node is the cousin of another, and so have abandoned most of this extended ... differences between directed and undirected edges and the way in which they are modeled Figure 12-4 shows two graphs: I is undirected and J is directed Figure 12-4 Directed and undirected graphs have...

Ngày tải lên: 05/10/2013, 08:48

... interface, HashMap class, and TreeMap class more fully in Chapter 10 Generating Hash Codes While the majority of system classes generate hash codes for you, when creating your own classes it's a ... dictionary Because Dictionary is an abstract class and you'll likely never use it directly, let's look at a subclass that implements all of the abstract methods of the class: Hashtable Hashtable Basics ... Demonstration There is one Hashtable subclass that is defined with the Swing classes: the UIDefaults class It provides a hash table for the UIManager to find the look and feel−dependent properties for...

Ngày tải lên: 05/10/2013, 12:20

... changed from Object to AbstractList (which subclasses AbstractCollection, a subclass of Object) Besides the obvious methods inherited from Object, Vector inherits three methods from AbstractList that ... interface and the ArrayList class more fully in Chapter Vector Operations Now that our vector is filled and sized properly, what can we with it? The Vector class has methods for fetching, finding, and ... defines a standard Stack class, but no queue The Java class is like the abstract data type (ADT) stack, effectively restricting access to its data structure by permitting elements to be added and removed...

Ngày tải lên: 05/10/2013, 12:20

... interconnected concepts of class analysis: class structure, class location, class interests, class experiences, class consciousness, class formation, class practices and class struggles Some of ... imposed by class locations Class practices, then, trans- 200 Class counts Figure 10.5 Micro-model of class location, class consciousness and class practice form both class consciousness and class ... a class structure A general framework 205 Figure 10.6 Macro-model of class structure, class formation and class struggle class struggle Class struggles transform both class formations and class...

Ngày tải lên: 01/11/2013, 07:20

... relationship between class structure and class formation at the macro-level of analysis and between class location and class consciousness at the micro-level are at the core of class analysis The ... factors, one linked to the effects of class structure on class formation and the other of class struggle on class formation Class structure was seen as shaping class formations via the ways in which ... scale for class categories: comparisons of state and private sectors and of union and nonunion members Consciousness and formation 237 the difference between state and private sector middle-class...

Ngày tải lên: 01/11/2013, 07:20

... Refer to prior labs on configuring Serial and Ethernet interfaces and making changes to configurations if you need help b What is the clock rate to be set to and which interface is it set on? ... If prompted for a password, enter class If class does not work, ask the instructor for assistance Router>enable At the privileged exec mode enter the command erase startup-config Router#erase ... updates received on the local router a Enter show cdp neighbors command at the router prompt b Fill in the following table: Device and Port ID Local Interface Hold Time Capability Platform Upon completion...

Ngày tải lên: 05/11/2013, 12:15

... with 25 molecules of O2 to form 16 molecules of CO2 and 18 molecules of H2O moles of C8H18 react with 25 moles of O2 to form 16 moles of CO2 and 18 moles of H2O mol C8H18 : 25 mol O2 : 16 mol ... McGraw Hill O + H H O + O H H 11 Limiting and Excess Reactants in the Combustion of Methane CH4(g) + O2(g) → CO2(g) + H2O(g) • If we have molecules of CH4 and molecules of O2, which is the limiting ... Yield, and Percent Yield Example: • When 28.6 kg of C are allowed to react with 88.2 kg of TiO2 in the reaction below, 42.8 kg of Ti are obtained Find the Limiting Reactant, Theoretical Yield, and...

Ngày tải lên: 28/11/2013, 01:11

... Open a command prompt window b At the command prompt, type cd C:\Moc\Win2154a\Labfiles and then press ENTER c At the command prompt, type csvde /? and then press ENTER d Review the –i and –f options ... Baldwin In Active Directory Users and Computers, in the console tree, expand domain.nwtraders.msft, and then click Package Handling b Right-click Package Handling, and then click Refresh to display ... account.) Module 4: Setting Up and Administering Users and Groups Using the ldifde Command After the file is properly formatted, use the ldifde command to import the file and create multiple user accounts...

Ngày tải lên: 10/12/2013, 16:15

... constructor for the SqlCommand class is: public SqlCommand( ); In VB, the constructor is represented by a call to a class' s New subprocedure The equivalent call to the SqlCommand class constructor in ... virtual Overridable In both C# and VB, constructors have a special syntax In C#, constructors have the same name as the classes whose objects they instantiate and they don't indicate a return ... qualifiers with methods These, and their VB equivalents, are shown in Table A-4 Table A-4 C# keywords used with methods and their VB equivalents C# keyword VB keyword abstract MustOverride override...

Ngày tải lên: 14/12/2013, 18:16

Ngày tải lên: 17/12/2013, 15:18

... Transactions and State iii Instructor Notes Presentation: 135 Minutes Lab: 90 Minutes This module describes transactions and related concepts and issues Students learn to activate and deactivate ... objects are the ContextInfo and Security objects and they implement the IContextInfo and ISecurityProperty interfaces, respectively The IContextInfo interface provides methods and properties relating ... error handler to call SetAbort and raise any error back to the caller 40 Module 4: Managing Transactions and State The following code shows how to implement a transaction method with an error handler:...

Ngày tải lên: 21/12/2013, 19:15

... the class definition would look like this: class TestPackage.TestClass { function TestClass() { //Constructor } } The text after the class keyword contains not only the name of the class (TestClass) ... resides The TestClass class above assumes that the class file is not in any package, but is sitting directly in a classpath directory However, if we decided to create the TestClass class in a package ... class (the class name without package path)—by importing the class You can import a class by using the import statement followed by the path to the class For example: import TestPackage.TestClass;...

Ngày tải lên: 21/01/2014, 13:20

... DefaultTokenImpl class confusing, consider the Mammal, Horse, Whale, and Kangaroo example shown earlier Mammal is a classic example of an abstract class In the real world, you may see horses, whales, and ... convenient abstraction for classifying the actual animals To declare that you're not allowed to create instances of a class, you must explicitly declare that the class is abstract, by using the abstract ... purpose An abstract class is all about common implementation, whereas an interface is all about usage It's usually best to keep these two aspects separate, and to let the non -abstract classes (such...

Ngày tải lên: 21/01/2014, 15:20

... priority class and priority levels Module 4: Managing Applications and Services by Using Process Control By default, the priority class of a process is NORMAL If a process creates a child process and ... configure and manage processes and process groups Process Control command-line utility ProcCon.exe A command-line or console utility that is a client of the Process Control service It provides a command-line ... OK To open a command prompt • Click Start, click Run, type CMD and click OK To restart Process Control At the command prompt, type net stop proccon and press ENTER At the command prompt, type...

Ngày tải lên: 24/01/2014, 10:20

... BLooper object Both the BApplication and BWindow classes are derived from BLooper, so objects of these two classes (or objects of classes derived from these two classes) can receive messages The ... Be-defined classes Your nontrivial projects will also include application-defined member functions, either in classes you define from scratch or in classes you derive from a Be-defined class Here ... BView-derived classes you define may be very different from one another 120 Chapter 4: Windows, Views, and Messages With the exception of the class name and the name of the constructor, the MyDrawView class...

Ngày tải lên: 26/01/2014, 07:20

... text field and pressing the button Close the test movie and save your work as wordProcessor2.fla You can see how easy it is to use the methods associated with the String and Selection classes a ... using many of the String and Selection class methods we've discussed Open wordProcessor1.fla in the Lesson04/Assets folder This file has three layers: Background, Buttons, and Actions The Background ... zipLength equals and another if it doesn't The Selection class allows you to control various aspects of the currently focused text field, including highlighting text, getting and setting the caret's...

Ngày tải lên: 26/01/2014, 11:20

... following program creates an array of ten elements and assigns each element a value It then computes the average of those values and finds the minimum and the maximum value C++ A Beginner’s Guide by ... sorting algorithms The quick sort, the shaker sort, and the shell sort are just three However, the best known, simplest, and easiest to understand sorting algorithm is called the bubble sort While ... defined by C++ is the string class, which is part of the C++ class library Thus, string is not a built-in type It provides an object-oriented approach to string handling but is not as widely...

Ngày tải lên: 27/01/2014, 02:20