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IFS410 Advanced Analysis and Design

IFS410 Advanced Analysis and Design. Week 1 Introduction to Java: Applications. 1. 1. Introduction. Object-Oriented Programming

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IFS410 Advanced Analysis and Design

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  1. IFS410Advanced Analysis and Design Week 1 Introduction to Java: Applications 1.1

  2. Introduction • Object-Oriented Programming • OOP is more than learning a new language; it requires a new way of thinking. We must no longer think in terms of data structures - we must think in terms of objects. • Many languages claim to have "Support for Object Technologies!" 1.2

  3. Java • The JavaTM programming language is designed to meet the challenges of application development in the context of heterogeneous, network-wide distributed environments.

  4. Different Kinds of Java • Java Applications • Java Applets • Java Script • Java Server Pages • Java Servlet technology • Java Beans

  5. How Java application works

  6. Object • An object is a software bundle of variables and related methods. • Attribute (State) and Behavior (Method) • Message

  7. Class 06/05/2002 2.7

  8. The Class Declaration

  9. Class Body • Constructor • Declarations for the Variables • Methods to implement the behavior

  10. Declaring Member Variables • A class's state is represented by its member variables. • You declare a class's member variables in the body of the class.

  11. Implementing Methods

  12. Understanding Instance and Class Members • By default, unless otherwise specified, a member declared within a class is an instance member. • To specify that a member variable is a class variable, use the static keyword.

  13. JApplet Class • JApplet is a subclass of java.awt.Applet • javax.swing.JApplet • JApplet -- a class that enables applets to use Swing components • init(), start(), paint(), (stop(), destroy()) • Details in Chapter 20

  14. Lab activities (Week 1) • Tutorial 1 (JCreator) –Assignment 1

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