object oriented programming concepts in java with examples ppt

... using getModifierNames is by far the most succinct way of getting the string values of method and data member modifiers As an interesting aside, when introspecting the methods of a built-in inter-face, ... to display information about all internal and user-defined classes We’ll create a sidebar of links to all existing classes and interfaces, and display detailed information in the main portion ... their format during coding Trang 9E X T E N D I N G S Q L I T E SQLite comes packaged with PHP 5 It has advanced capabilities and a built-in object-oriented (OO) interface Examining the classes

Ngày tải lên: 03/07/2014, 07:20

... 1Web Programming with JavaJava Object-Oriented Programming Huynh Huu Viet Email: viethh@uit.edu.vn Department of Information Systems Trang 2ƒ Inheritance & Polymorphism™ Some useful Java ... many statements in the main method ƒ Using objects and methods effectively ™ Typically (and ideally), you only do these things in the main method ƒ Creating objects ƒ Calling class/object methods ... single task ™ Modifying Strings in the Buffer with methods: ƒ insert() ƒ delete() Trang 42Some useful Java classes (3)™ Reading text: java.util.Scanner Scanner input = new Scanner(System.in);

Ngày tải lên: 27/06/2014, 21:20

... of Object-Oriented SoftwareDesign and Java Programming Putting the Pieces Together! Trang 2Object-Oriented Design A technique for developing a program in which the solution is expressed in terms ... class being inherited from is the superclass • The class that inherits properties is the subclass Trang 9Defining Objects• An object-oriented program consists of many objects. • An object is ... carIn() carOut() getNumCars():NumCars Trang 35Object Oriented Programming• When writing object-oriented programs, first one must define the classes (like Car). • Then, while the program is running,

Ngày tải lên: 31/03/2014, 20:20

... Dynamic Binding 15 Case Study: Inheriting Interface and Implementation 16 Case Study: Creating and Using Interfaces 17 Inner Class Definitions 18 Notes on Inner Class Definitions Trang 21 Introduction• ... Point.java 2 // Definition of class Point 3 4 public class Point { 5 protected int x, y; // coordinates of the Point 21 // Set x and y coordinates of Point 22 public void setPoint( int a, int ... Point extends Object implements Shape { 13 protected int x, y; // coordinates of the Point 21 // Set x and y coordinates of Point 22 public void setPoint( int a, int b ) 34 // convert the point

Ngày tải lên: 31/03/2014, 20:20

... command line using the command “java −jar” For example: java −jar JarFileName.jar 2.6 Creating Abstractions IN THIS SECTION, we look at some specific examples of object-oriented design in a main that ... located.Again, that can depend to some extent on the version of JAVA that you are using,but in the standard JAVA 5.0, they are stored in jar files in a subdirectory of themain JAVAinstallation ... comments that are placed in theJava source code file Recall that one type of Java comment begins with /* and endswith */ A Javadoc comment takes the same form, but it begins with /** rather thansimply

Ngày tải lên: 12/08/2014, 21:21

... like this can be done in most programming languages The cen-tral new idea in object-oriented programming–the idea that really distinguishes it from traditional programming–is to allow classes ... beginning to work with objects, subclassing is used mainly in one situation: There is an existing class that can be adapted with a few changes or additions This is much more common than designing ... with) to each other in different ways: Inheritance is one of the fundamental concepts of Object Orientated ming, in which a class ”gains” all of the attributes and operations of the class itinherits

Ngày tải lên: 12/08/2014, 21:21

... belongs to the containing class. (When working inside the class, the object “ this” is used implicitly.) The inner class object is permanently associated with the containing class object, and it has ... we begin GUI programming.) 5.1 Interfaces Some object-oriented programming languages, such as C++, allow a class to extend two or more superclasses. This is called multiple inheritance . In the ... reserved word with an additional, technical meaning. An “interface” in this sense consists of a set of instance method interfaces, without any associated implementations. (Actually, a Java interface

Ngày tải lên: 12/08/2014, 21:21

... containers, with their own layout managersand components This makes it possible to build up complex user interfaces in ahierarchical fashion, with containers inside containers inside containers ... element in a GUI, including buttons, menus, text-input boxes,scroll bars, check boxes, and so on In JAVA, GUI components are represented byobjects belonging to subclasses of the classjava.awt.Component ... Youneed this object to do the actual drawing To do any drawing at all in JAVA, youneed a graphics context A graphics context is an object belonging to the class java.awt.Graphics Instance methods

Ngày tải lên: 12/08/2014, 21:21

... registering oneobject to listen for events from the other object This is something that can poten-tially be done from outside both objects Each object can be developed independently,with no knowledge ... existing class,without having to make any changes at all to that class: import java.awt.Component; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JFrame; ... have alreadybeen working with extensively.) Many useful methods are defined in theComponentandJComponentclasses and so can be used with any Swing component We begin bylooking at a few of these

Ngày tải lên: 12/08/2014, 21:21

... static final int club = 2; public static final int spade = 3; public static final int ace = 1; public static final int jack = 11; public static final int queen = 12; public static final int king ... JFrame();}\\end of main method 7.2.1 The CardNames Interface TheCardNamesclass is an interface defining names public interface CardNames { public static final int heart = 0; public static final int diamond ... I/O The class javax.imageio.ImageIO makes it easy to save images from a program intofiles and to read images from files into a program This would be useful in a programsuch as PaintWithOffScreenCanvas,

Ngày tải lên: 12/08/2014, 21:21

... Theremove(Object)method involves first finding the object, which is not very efficientfor any list since it involves going through the items in the list from beginning to enduntil the object is ... existing items or atthe beginning of the list or at the end of the list As an example of using aListIterator, suppose that we want to maintain a list of items that is always sorted into increasing ... that imple-ment the interface List<String> You would probably find it easier to design aninsertion algorithm that uses array-like indexing with the methodsget(index)andadd(index,obj) However,

Ngày tải lên: 12/08/2014, 21:21

... either importingindividual classes or putting the directive “import java.io.*;” at the beginning of your Trang 11source file Streams are necessary for working with files and for doing communicationover ... have to do is wrap theWriterin aPrintWriterobject You do this byconstructing a newPrintWriterobject, using theWriteras input to the constructor.For example, ifcharSinkis of typeWriter, then you ... useful for testing a program to see whether ornot it is correct and for finding the errors in an incorrect program After testing Trang 7and debugging, when the program is used in the normal way,

Ngày tải lên: 12/08/2014, 21:21

... object oriented programming and saves the lives of millions of programmers in practical programming The main purpose of the Singleton pattern is to deliver a single instance of object no matter ... implement observer interface Notifying via �M Notifying via Email Proxy Pattern or Lazy Loading Another very important programming practice in OOP is lazy loading and loose coupling The main idea is ... matter how many times you instantiate it That is, if an object is instantiated once, using the Singleton pattern you can deliver only that instance when you require it again in your code This saves

Ngày tải lên: 12/08/2014, 21:21

... you have three objects in your repository One object performs the geocoding with the help of online geocoding services Another object locates that place using a map service Finally, another ... pattern in Chapter 7 Facade provides a common interface to many objects In other words, it just simplifies the programming providing a necessary interface, which actually uses a lot of other objects ... having the modifiers %d[%s]\n", $method->isInternal() ? 'internal' : 'user-defined', // Invoke the method printf(" -> Invokation results in: "); var_dump($method->invoke(NULL));

Ngày tải lên: 12/08/2014, 21:21

... this object introduced in SPL Let's take a look at the following example to understand how effectively it can be used in your everyday programming In the previous sections and also in the coming ... object inside it with special facilities This object is called SPLObjectStorage We will understand this using the example later on in this chapter SPLObjectStorage can store any object in it ... Trang 1In the interesting example shown below, we are extending ArrayObject and creating a more flexible ExtendedArrayObject for prototype like functionality

Ngày tải lên: 12/08/2014, 21:21

... passwords in plain text in your database without encrypting them in some way The best way is to store just the hash of their passwords using some hash routines like md5() Updating Data in an OO ... differ Interbase client Unix and Windows Trang 16Name Tested Database Prerequisites Operating Systems informix C Generic informix driver Use this if you are using Informix 7.3 or later Informix ... be sent in packets As our parameter is a string, we used the following line to bind the parameter: $stmt->bind_param("s",$name); After binding the variable, now we set the value to $name

Ngày tải lên: 12/08/2014, 21:21

... Intended Audience Object- Oriented Programming with Java is written for first-year college/univer- sity programming courses worldwide. It introduces you to object- oriented design and programming ... through 11 introduce graphical user interface programming in Java, a topic that is increasingly finding its way into the early part of the CS curriculum. Finally, Chapter 12 provides an introduc- tion ... Northeast Compositors, Inc. Text Design: Delgado Design, Inc. Printing and Binding: Courier Westford Cover printing: John Pow Company, Inc. This book was typeset in Quark 4.1 on a Macintosh G4. The font...

Ngày tải lên: 05/03/2014, 13:20

... data are merged into a single indivisible thing an object. ■ Close match between objects in the programming sense and objects in the real world. Object Oriented Programming with C++/ Session ... Oriented Programming with C++/ Session 1/ 2 of 50 Session Objectives Discuss the following: ã The Object- Oriented approach ã Drawbacks of traditional programming ã Object- Oriented programming Discuss ... Move Polygon objects Object Oriented Programming with C++/ Session 1/ 24 of 50 Class Animals and its subclasses Animals Insects Mammals Reptiles Amphibians Object Oriented Programming with...

Ngày tải lên: 16/03/2014, 01:20

... 94 The Debugging Process 94 Making Repetitious Debugging Easier 95 Using the Visual Studio Debugger 97 Setting a Breakpoint 97 Using a Breakpoint to Examine Variables 98 Single-Stepping the Program ... C# can do for you. flast.indd xxvflast.indd xxv 10/8/2012 8:54:52 AM10/8/2012 8:54:52 AM BEGINNING Object- Oriented Programming with C# Jack Purdum ffirs.indd vffirs.indd v 10/8/2012 8:54:40 ... 15: The Visual Studio IDE c01.indd 8c01.indd 8 10/8/2012 8:46:48 AM10/8/2012 8:46:48 AM BEGINNING Object- Oriented Programming with C# flast.indd xxxiflast.indd xxxi 10/8/2012 8:54:53 AM10/8/2012...

Ngày tải lên: 15/02/2014, 07:20

... Strings Strings As Class Members A User-Defined String Type The Standard C++ string Class Defining and Assigning string Objects Input/Output with string Objects Finding string Objects Modifying string Objects Comparing ... Objects A Linked List Example A Chain of Pointers Adding an Item to the List Displaying the List Contents Self-Containing Classes Augmenting linklist Pointers to Pointers Sorting Pointers The ... structured programming, the somewhat loosely defined discipline that influenced programming organization for several decades before the advent of Object- Oriented Programming. Problems with Structured Programming As...

Ngày tải lên: 21/02/2014, 06:20