INTRODUCTION TO JAVA PROGRAMMING教学（华南理工）10slide.pptVIP

Introduction to Java Programming Chapter10 Object-Oriented Design * Using the static Modifier A property that is shared by all the instances of the class should be declared as a static property. * * * Objectives To become familiar with the process of program development (§11.2). To the relationship types: association, aggregation, composition, strong inheritance, and weak inheritance (§11.3). To declare classes to represent the relationships among the classes (§11.3). To design systems by identifying the classes and discovering the relationships among these classes (§11.4). To implement the Rational class and process rational numbers using this class (§11.5). To design classes that follow the class-design guidelines (§11.6). To model dynamic behavior using sequence diagrams and statechart diagrams (§11.7 Optional) To know the concept of framework-based programming using Java API (§11.8). * Software Development Process * Requirement Specification A formal process that seeks to understand the problem and document in detail what the software system needs to do. This phase involves close interaction between users and designers. Most of the examples in this book are simple, and their requirements are clearly stated. In the real world, however, problems are not well defined. You need to study a problem carefully to identify its requirements. * System Analysis Seeks to analyze the business process in terms of data flow, and to identify the system’s input and output. Part of the analysis entails modeling the system’s behavior. The model is intended to capture the essential elements of the system and to define services to the system. * System Design The process of designing the system’s components. This phase involves the use of many levels of abstraction to decompose the problem into manageable components, identify classes and interfaces, and establish relationships among the classes and interfaces. * Implementation The process of translating the system desig