tailieunhanh - Lecture Introduction to programming with Java - Chapter 8: Software engineering

This chapter presents the following content: Coding-style conventions, helper methods, encapsulation (with instance variables and local variables), algorithmic design with OOP, top-down design, stubs, merging driver method into driven class, accessing instance variables without using this. | Coding-Style Conventions Helper Methods Encapsulation (with Instance Variables and Local Variables) Algorithmic Design with OOP Top-down Design Stubs Merging Driver Method into Driven Class Accessing Instance Variables Without Using this Chapter 8 – Software Engineering 1 /********************************************************* * * Dean & Dean * * This class acts as a driver for the Student class. *********************************************************/ public class StudentDriver { public static void main(String[] args) { Student s1; // first student Student s2; // second student s1 = new Student(); ("Adeeb"); ("Jarrah"); s2 = new Student("Chun", "HeeJoo"); (); } // end main } // end class StudentDriver Coding-Style Conventions 2 /********************************************************* * * Dean & Dean * * This class handles processing of a student's name. *********************************************************/ import ; public class Student { private String first = ""; // student's first name private String last = ""; // student's last name //******************************************************* public Student() { } // This constructor verifies that each passed-in name starts with // an uppercase letter and contains lowercase letters thereafter. public Student(String first, String last) { setFirst(first); setLast(last); } Coding-Style Conventions 3 //******************************************************* // This method verifies that first starts with an uppercase // letter and contains lowercase letters thereafter. public void setFirst(String first) { // [A-Z][a-z]* is a regular expression. // See API Pattern class. if (("[A-Z][a-z]*")) { = first; } else { (first + " is an invalid name.\n" + "Names must start with an uppercase letter and have" + " lowercase letters thereafter."); } } // end setFirst Coding-Style . | Coding-Style Conventions Helper Methods Encapsulation (with Instance Variables and Local Variables) Algorithmic Design with OOP Top-down Design Stubs Merging Driver Method into Driven Class Accessing Instance Variables Without Using this Chapter 8 – Software Engineering 1 /********************************************************* * * Dean & Dean * * This class acts as a driver for the Student class. *********************************************************/ public class StudentDriver { public static void main(String[] args) { Student s1; // first student Student s2; // second student s1 = new Student(); ("Adeeb"); ("Jarrah"); s2 = new Student("Chun", "HeeJoo"); (); } // end main } // end class StudentDriver Coding-Style Conventions 2 /********************************************************* * * Dean & Dean * * This class handles processing of a student's name. .

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