java object oriented programming video tutorial download

... (II) • Object- Oriented Programming – Introduce protected member access – Relationships • "is a" - inheritance – Object of subclass "is a" object of the superclass • "has a" - composition – Object ... Hall, Inc All rights reserved Relationship between Superclass Objects and Subclass Objects • Object of subclass – Can be treated as object of superclass • Reverse not true – Suppose many classes ... Referring to a subclass object with a superclass reference • Allowed - a subclass object "is a" superclass object • Can only refer to superclass members – Referring to a superclass object with a subclass...

Ngày tải lên: 31/03/2014, 20:20

... 18 Object Assignment Objects are assigned by reference Object object1=new Object( ); object2 =object1 ; Object content Variable index 0xf1: new object1 () Object object1; 0xf2: new object2 () Object ... (reference) as its value Data values Variable index 0xf1: object1 ’s content object1 : 0xf1 0xf2: object2 ’s content object2 : 0xf2 … object3 … Objects are reference data type 2008 © Department of Information ... 14 Java Packages Java hierarchically organizes classes into packages java. lang java. text java. util … Classes need to be referred using its complete name (package + class name): for example, java. util.Calendar...

Ngày tải lên: 27/06/2014, 21:20

... is object orientation? What is the UML? What is Object- Oriented Analysis and Design? How you OOAD? What are object- oriented development methodologies? How you use Java to write truly object- oriented ... witnessed over the years, object- oriented programming has seemed to me the most significant in terms of how much easier it makes the programming task Object- oriented programming in Java or C++ can really ... is to switch the way you think about programming to use the object- oriented programming paradigm What Is an Object- Oriented System? Just what is an object- oriented system? What makes an OO system...

Ngày tải lên: 22/08/2013, 14:52

... Object- Oriented Programming With Java, Second Edition Barry J Holmes Daniel T Joyce JONES AND BARTLETT PUBLISHERS Object- Oriented Programming with Java Second Edition Barry ... J.) Object- oriented programming with Java / Barry Holmes, Daniel Joyce p cm Includes bibliographical references and index ISBN 0-7637-1435-6 Java (Computer program language) Object- oriented programming ... Intended Audience Object- Oriented Programming with Java is written for first-year college/university programming courses worldwide It introduces you to object- oriented design and programming and...

Ngày tải lên: 05/03/2014, 13:20

... for the standard Java API was produced using javadoc Javadoc documentation is prepared from special comments that are placed in the Java source code file Recall that one type of Java comment begins ... documentation, you need to run the javadoc tool You can use javadoc in a command line interface similarly to the way that the javac and java commands are used Javadoc can also be applied in the ... to have the same name For example, both the java. awt package and the java. util package contain classes named List If you import both java. awt.∗ and java. util.∗, the simple name List will be ambiguous...

Ngày tải lên: 12/08/2014, 21:21

... subclass of Object, a variable of type Object can refer to any object whatsoever, of any type Java has several standard data structures that are designed to hold Object s, but since every object is ... understandable if we change our terminology a bit: In object- oriented programming, calling a method is often referred to as sending a message to an object The object responds to the message by executing ... express the behavior of the objects This is a powerful idea However, something like this can be done in most programming languages The central new idea in object- oriented programming the idea that...

Ngày tải lên: 12/08/2014, 21:21

... 101 THIS SECTION simply pulls together a few more miscellaneous features of object oriented programming in Java Read it now, or just look through it and refer back to it later when you need ... know about the first topic, interfaces, almost as soon as we begin GUI programming. ) 5.1 Interfaces Some object- oriented programming languages, such as C++, allow a class to extend two or more ... this brief discussion, perhaps you can see how GUI programming can make effective use of object- oriented design In fact, GUI’s, with their “visible objects,” are probably a major factor contributing...

Ngày tải lên: 12/08/2014, 21:21

... complete source code for the RandomStringsPanel import import import import java. awt.Color; java. awt.Font; java. awt.Graphics; javax.swing.JPanel; 126 /∗ ∗ T h i s panel d i s p l a y s 25 c o p i e ... program, we need an object that implements the MouseListener interface One way to create the object is to define a separate class, such as: import java. awt.Component; import java. awt.event.∗; /∗ ... object belonging to the class ActionEvent The event that is generated is associated with the button; we say that the button is the source of the event The listener object in this case is an object...

Ngày tải lên: 12/08/2014, 21:21

... MouseAdapter to handle mouse events: import import import import java. awt.Component; java. awt.event.MouseEvent; java. awt.event.MouseListener; javax.swing.JFrame; 135 public class ClickableRandomStringsApp ... HelloWorldGUI4 .java This version is a variation of HelloWorldGUI2 .java that uses anonymous nested classes where the original program uses ordinary, named nested classes: import java. awt.∗; import java. awt.event.∗; ... has the input focus When this happens, the JButton object creates an event object belonging to the class java. awt.event.ActionEvent The event object is sent to any registered listeners to tell...

Ngày tải lên: 12/08/2014, 21:21

... list to objects of a specified type 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 ... is a subclass of the class named Object This means that every object can be assigned to a variable of type Object Any object can be put into an array of type Object[ ] An ArrayList serves much ... adding an object to a Set has no effect if that object was already in the set • coll.contains (object) –returns a boolean value that is true if object is in the collection Note that object is not...

Ngày tải lên: 12/08/2014, 21:21

... comparison of objects in Java, and that is to provide a separate object that is capable of making the comparison The object must implement the interface Comparator, where T is the type of the objects ... of programming errors In Java, a variable of object type holds either a pointer to an object or the special value null Any attempt to use a null value as if it were a pointer to an actual object ... numbers, but Java will automatically convert the 17 to the corresponding wrapper object, new Integer(17), and the wrapper object will be added to the collection (The creation of the object does...

Ngày tải lên: 12/08/2014, 21:21

... differences in path names between platforms, Java has the class java. io.File An object belonging to this class represents a file More precisely, an object of type File represents a file name rather ... neat things about Java s I/O package is that it lets you add capabilities to a stream by “wrapping” it in another stream object that provides those capabilities The wrapper object is also a stream, ... Although early versions of Java did not have assertions, an assertion facility similar to the one in C/C++ has been available in Java since version 1.4 As with the C/C++ version, Java assertions can...

Ngày tải lên: 12/08/2014, 21:21

... Support Object- Oriented Concepts? Okay, how does C# implement object- oriented programming? In a sense, this is the wrong question C# is an object- oriented language; however, it doesn’t implement object- oriented ... right here in Part IV! Chapter 10 Object- Oriented Programming — What’s It All About? In This Chapter ᮣ Making nachos ᮣ Reviewing the basics of object- oriented programming ᮣ Getting a handle on ... classification ᮣ Understanding why object- oriented programming is important T his chapter answers the musical question, “What are the concepts behind object- oriented programming and how they differ...

Ngày tải lên: 04/10/2013, 21:20

... myOtherObject = new Sub1(1) 7575Ch05.qxp 4/27/07 1:02 PM Page 101 CHAPTER I OBJECT- ORIENTED PROGRAMMING printfn "myObject.state = %i, myObject.otherState = %i" myOtherObject.state myOtherObject.otherState ... (except from System .Object) Object Expressions Object expressions are at the heart of succinct object- oriented programming in F# They provide a concise syntax to create an object that inherits ... let myObject = new Sub() printfn "myObject.state = %i, myObject.otherState = %i" myObject.state myObject.otherState The results of this example, when compiled and executed, are as follows: myObject.state...

Ngày tải lên: 05/10/2013, 10:20

... the terms object and class in the context of object- oriented programming Apply the concept of abstraction Module 7: Essentials of Object- Oriented Programming What Is a Class? Topic Objective ... Essentials of Object- Oriented Programming What Is an Object? Topic Objective To define the term object Lead-in An object is an instance of a class It is a common mistake to use the terms class and object ... Object- Oriented Programming Object- oriented programming arose to alleviate these problems Object- oriented programming, if understood and used wisely, is really person -oriented programming because people...

Ngày tải lên: 10/12/2013, 16:16