Java, Java, Java - Computer Science：java，java，java -计算机科学.ppt

Java, Java, Java Object Oriented Problem Solving Chapter 1 Java Program Design and Development Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development Objectives ? Know the basic steps involved in program development. ? Understand some basic Java language elements. ? Know how to use simple output operations. ? Be able to identify different types of errors in a program. ? Understand how a Java program is translated into machine language. ? Understand the difference between a Java application and a Java applet. ? Know how to edit, compile, and run programs. Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development Outline ? Designing Good Programs ? Designing a Riddle Program ? Java Language Elements ? Editing, Compiling, and Running a Java Program ? From the Java Library: The System and PrintStream classes. Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development Designing Good Programs ? Always precede coding with careful design. ? Remember: The sooner you begin to type code, the longer the program will take to finish. ? Design includes designing classes, data, methods, and algorithms. ? Design is followed by coding, testing, and revision. Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development The Program Development Process ? Problem Specification ? Problem position ? Design Specification ? Data, Methods, and Algorithms ? Coding into Java ? Testing, Debugging, and Revising Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development Object-Oriented Program Development Java, Java, Java, 3E by R. Morelli | Ralph Walde Copyright 2006 Chapter 1: Java Program Development Problem Specification ? What exactly is the problem to be solved? ? How will the program be used? ? How will the program behave? Problem Specif