object oriented programming in java lecture notes ppt

... 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 ... 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 ... specifying which class contains themain()method This is done by creating amanifest file The manifest file can be a plain text file taining a single line of the formMain−Class: ClassName where ClassName

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 ... objects that share some, but not all, of their structure and behavior Such similarities can be expressed usinginheritanceandpolymorphism 4.1 Extending Existing Classes IN DAY-TO-DAY PROGRAMMING, ... 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

Ngày tải lên: 12/08/2014, 21:21

... 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 ... 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 ... technical meaning. An “interface” in this sense consists of a set of instance method interfaces, without any associated implementations. (Actually, a Java interface can contain other things as well,

Ngày tải lên: 12/08/2014, 21:21

... need this object to do the actual drawing. To do any drawing at all in JAVA, you need a graphics context. A graphics context is an object belonging to the class java.awt.Graphics. Instance methods ... for handling events in JAVA. A listener is an object that includes one or more event-handling methods. When an event is detected by another object, such as a button or menu, the listener object ... element in a GUI, including buttons, menus, text-input boxes, scroll bars, check boxes, and so on. In J AVA, GUI components are represented by objects belonging to subclasses of the class java.awt.Component.

Ngày tải lên: 12/08/2014, 21:21

... rameter,evt, contains information about the event This information can be re-trieved by calling methods in the ActionEvent class In particular,evt.getActionCommand()returns aStringgiving the command ... JTextArea(int rows, int columns) public JTextArea(String contents) public JTextArea(String contents, int rows, int columns) The parameterrowsspecifies how many lines of text should be visible in the ... arecontainers, which can hold other components Containers in JAVA are objects thatbelong to some subclass of java.awt.Container The content pane of a JAppletorJFrame is an example of a container

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 ... Parameterized types extend Java s basic philosophy of type-safe programming to generic programming 167 8. 1 Generic Programming in Java JAVA ’ S GENERIC PROGRAMMING FEATURES are represented ... }\\end of main method 7.2.1 The CardNames Interface The CardNames class is an interface defining names. public interface CardNames { public static final int heart = 0; public static final int diamond

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 ... list.get(index)–returns the object of type T that is at position index in thelist, where index is an integer Items are numbered 0, 1, 2, , list.size()−1.The parameter must be in this range, or an IndexOutOfBoundsException

Ngày tải lên: 12/08/2014, 21:21

... 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 ... 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, the assertions in theprogram will be ignored ... complexity would be overwhelming One of the major achievements in the history of programming has been to come up with good abstractions for representing I/O devices In Java, the main I/O abstractions

Ngày tải lên: 12/08/2014, 21:21

... is intended as a guide for those who already understand object-oriented programmingbut want to know exactly how the concept works in JavaScript Familiarity with Java, C#, orobject-oriented programming ... Understanding Objects details the makeup of objects in JavaScript JavaScript objects behave differently than objects in other languages, so a deep understanding of howobjects work is vital to mastering ... Understanding ObjectsEven though there are a number of built-in reference types in JavaScript, you will most likelycreate your own objects fairly frequently As you do so, keep in mind that objects in JavaScriptare

Ngày tải lên: 11/05/2017, 13:46

... Trang 1Object Oriented Programming in Python By Amarjit Singh Karanvir Singh *#%???$% Trang 2• Contents Object Oriented Programming Basics Basic Concepts of Object Oriented Programming Object ... define your data attributes in init • Class attributes are shared across all instances • Object Oriented Programming in Python Python Classes in Detail (II) class Dataset(object): def init ... design pattern in Python Trang 3Object Oriented Programming Concepts Trang 4• Functions and closures, recursion, lists, … Before diving deep into the concept of Object Oriented Programming, let’s

Ngày tải lên: 12/09/2017, 01:34

... 2Advanced Object-Oriented Programming in RStatistical Programming for Data Science, Analysis and Finance Thomas Mailund Trang 3Advanced Object-Oriented Programming in R: Statistical Programming for ... typical introductory level of most textbooks on R This book is intended to introduce objects and classes in R and how oriented programming is done in R Object-oriented programming is based on object-the ... code is intended to work with Most books I have read on object-oriented programming, and the classes I have taken on object-oriented programming, have centered on object-oriented modeling and

Ngày tải lên: 11/09/2020, 13:40

... Paradigm 4) Object Oriented Principles 5) What Exactly is Object Oriented Programming? 6) The Benefits of the Object Oriented Programming Approach 1.1 A Brief History of Computing Computing is a ... Classes 11.8 Programming the Message Classes 11.9 Programming the Client Classes 11.10 Creating and Handling UnknownClientException 11.11 Programming the Main classes 11.12 Programming the Interface ... study showing in detail how object oriented analysis works and how the resultant models can be implemented in an object oriented programming language (i.e Java) Feedback 11 Having defined the

Ngày tải lên: 01/04/2021, 14:35

... Pointer (vptr) 10 3.2 Setting the vptr in the Constructor 10 3.3 Inheriting the vtbl and Overriding the vptr in the Subclasses 12 3.4 Virtual Call (Late Binding) 13 3.5 Examples of Using ... says: “… A pointer to a structure object, suitably converted, points to its initial member There may be unnamed padding within a structure object, but not at its beginning”. Listing 5 The Constructor ... pointer to the superclass In OOP such casting is called upcasting and is always safe. Listing 6 Example of Using Rectangle Objects (file main.c) #include "rect.h" /* Rectangle class interface

Ngày tải lên: 15/10/2021, 21:51

... Accessing class members in case of inheritance ❖ Virtual base classes in case of multiple inheritance ❖ Inheritance and/or composition? Trang 85▪ Accessing inherited members Trang 86▪ Accessing inherited ... an object instance is created or when already existing objects (cin , cout , string , STL etc.) are used in a program Trang 96➢ Another possibility is to place objects of other classes in our ... every object in the class hierarchy: Trang 112❖ Redefining virtual functions ❖ Early and late binding ❖ Virtual destructors ❖ Abstract classes and interfaces ❖ Run-time type informations in case

Ngày tải lên: 15/02/2022, 19:02

... 1An Introduction to Hardware, Software, and the Internet Java Methods Object-Oriented Programming and Data Structures Maria Litvin ● Gary Litvin Copyright © 2011 by Maria Litvin, Gary Litvin, ... and style of programming languages • Diagnose and correct programming errors Continued Trang 17Software Engineers are Able To: • Use software development tools and documentation • Find and utilize ... implement friendly user interfaces • Uphold the highest standards of professional ethics Trang 18• Integers are represented in binary (base 2) • Java uses 4 bytes for an integer (int data type) 255

Ngày tải lên: 04/11/2020, 23:13

... Trang 1An Introduction to Software Engineering Copyright © 2011 by Maria Litvin, Gary Litvin, and Skylight Publishing All rights reserved Chapter 2 Java Methods Object-Oriented Programming and ... C:\javamethods\Ch02> path=%PATH%;C:\Program Files\Java\jdk 1.5.0_07\bin C:\javamethods\Ch02> javac Greetings2.java C:\javamethods\Ch02> java Greetings2 Enter your first name: Josephine ... Hello, Josephine Jaworski Press any key to continue • Simple text dialog: prompt input, prompt input result Trang 20Command-Line Arguments C:\javamethods\Ch02> javac Greetings.java C:\javamethods\Ch02>

Ngày tải lên: 04/11/2020, 23:13

... classes import java.awt.event.*: from awt, awt.event, Import javax.swing.*; and swing packages ° java.lang is imported automatically into all classes; defines System, Math, Object, String, and ... Trang 1 TNT NS Java Methods METHODS Object-Oriented Programming and Data Structures 2nd AP edition with GridWorld Maria Litvin e Gary Litvin | pit Cì ¡ @@I)| ‹ A we or < Objects and ... how objects are created and how to call their methods Learn a little about inheritance in OOP Trang 3 OOP e An OO program models the application as a world of interacting objects e An object

Ngày tải lên: 04/11/2020, 23:13

... C/C++Javapublic class MyMath{ public static int addSquares(int n) { int sum = 0; for (int k = 1; k <= n; k++) sum += k * k; return sum; }} int addSquares(int n){ int k, sum = 0; for (k = 1; k ... not Java!) Trang 21Euclid’s Algorithm two positive integers Trang 22No Trang 23Euclid’s Algorithm (cont’d) • With iterations • With recursion public static int gcf (int a, int b) Trang 24Working ... in recursion? • Suppose we define “word” as a sequence of letters Turn this into a recursive definition. • When does Binary Search apply? • How many comparisons, on average, are needed to find

Ngày tải lên: 04/11/2020, 23:14

... 471 Displaying the List Contents 472 Self-Containing Classes 473 Augmenting LINKLIST 473 Pointers to Pointers 474 Sorting Pointers 476 The person** Data Type 476 Comparing Strings 478 A Parsing Example ... demonstrates cin, newline #include <iostream> using namespace std; int main() { int ftemp; //for temperature in fahrenheit cout << “Enter temperature in fahrenheit: “; cin >> ftemp; int ... 717 Exception Notes 718 Summary 720 Questions 720 Exercises 722 xv 00 3087 FM 11/29/01 2:15 PM Page xv OBJECT- ORIENTED PROGRAMMING IN C++, FOURTH EDITON xii Copying a String Using Pointers 454 Library...

Ngày tải lên: 30/03/2014, 02:20

... 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