Liang,Introduction to Java Programming,revised by Dai-kaiyu 1 Chapter 10 Object-Oriented Modeling

LiangIntroduction to Java Programmingrevised by Dai-kaiyu1

Chapter 10 Object-Oriented Modeling

Prerequisites for Part II

Chapter 6 Objects and Classes

Chapter 7 Strings

Chapter 8 Inheritance and Polymorphism

Chapter 5 Arrays

Chapter 9 Abstract Classes and Interfaces

Chapter 10 Object-Oriented Modeling

Chapter 11 Getting Started with GUI Programming

Chapter 12 Event-Driven Programming

Chapter 15 Exceptions and Assertions

Chapter 16 Simple Input and Output

You can cover Exceptions and IO after Chapter 8

You can cover GUI after Chapter 8


Objectives To become familiar with the process of program development

(sect102) To the relationship types association aggregation composition

strong inheritance and weak inheritance (sect103) To declare classes to represent the relationships among the classes

(sect103) To design systems by identifying the classes and discovering the

relationships among these classes (sect104) To implement the Rational class and process rational numbers

using this class (sect105) To design classes that follow the class-design guidelines (sect106) To model dynamic behavior using sequence diagrams and

statechart diagrams (sect107 Optional) To know the concept of framework-based programming using Java

API (sect108)


Software Development Process

Requirement Specification

System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

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


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

Seeks to analyze the business process in terms of data flow and to identify the systemrsquos input and output

Part of the analysis entails modeling the systemrsquos behavior The model is intended to capture the essential elements of the system and to define services to the system


System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

The process of designing the systemrsquos 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


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

The process of translating the system design into programs Separate programs are written for each component and put to work together

This phase requires the use of a programming language like Java The implementation involves coding testing and debugging


Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

Ensures that the code meets the requirements specification and weeds out bugs

An independent team of software engineers not involved in the design and implementation of the project usually conducts such testing


Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

Deployment makes the project available for use

For a Java applet this means installing it on a Web server for a Java application installing it on the clients computer


Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment

Maintenance is concerned with changing and improving the product

A software product must continue to perform and improve in a changing environment This requires periodic upgrades of the product to fix newly discovered bugs and incorporate changes


UML- Use-Case

Describe system behavior and show how to capture it in a model


UML- Use-Case


UML-Activity DiagramIt is essentially a flow chart showing flow of control from activity to activity


UML-Class Diagrams

Describe the static view of the system and show how to capture it in a model


Sequence diagramsSequence diagrams describe interactions among objects by depicting the time ordering of method invocations The diagram shows1048707 The objects participating in the interaction1048707 The sequence of messages exchanged

anObject TheClass Class role

Method Invocation

Activation

anotherObject TheOtherClass

Method InvocationanotherMethod()

aMethod()


Sequence diagrams cont

name Name BorrowLoan address Address loan Loan borrower Borrower

setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip

setAnnualInterestRate

setNumOfYears

setLoanAmount

setName

setAddress

setLoan


UML-Collaboration Diagram




Statechart diagrams

Statechart diagrams describe flow of control of the object

IndicateInitial State

Transition

State1

State2


Statechart diagrams cont

Class Loaded

JVM loads the class for the object

Use the new operator to create the object

Object Created

Invoke the finalize method on the object

Object Destroyed


UML- Component Diagram

A diagram that shows the organization of and the dependencies among a set of components


UML-Deployment DiagramThe deployment diagram shows

Configuration of processing nodes at run-time

Communication links between these nodes

Component instances and objects that reside on them


Relationships among Classes

Association

Aggregation

Composition

Inheritance


Association

Association represents a general binary relationship that describes an

activity between two classes

Student FacultyCourse560Take Teach

03 1Teacher

public class Student

Data fields private Course[]

courseList

Constructors

Methods

public class Course

Data fields private Student[]

classList

private Faculty faculty

Constructors

Methods

public class Faculty

Data fields

private Course[]

courseList

Constructors

Methods

An association is usually represented as a data field in the class


Association Between Same Class

Association may exist between objects of the same class

For example a person may have a supervisor

Person Supervisor

1

1


Aggregation and CompositionAggregation is a special form of association which represents an ownership relationship between two classes Aggregation models the has-a relationship If an object is exclusively owned by an aggregated object the relationship between the object and its aggregated object is referred to as composition

Name Address Person

Composition Aggregation


Representing Aggregation in Classes

An aggregation relationship is usually represented as a data field in the aggregated class

public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name

private Address address

Constructors

Methods

public class Address

Data fields

Constructors

Methods


Inner Classes TranslationIf Name or Address is used in the Person class only they can be declared as an inner class in Person For example

public class Person private Name name private Address address class Name class Address


Inheritance

Inheritance models the is-an-extension-of

relationship between two classes

Person Faculty

public class Student extends Person

Data fields

Constructors

Methods

(A) (B)


Weak Inheritance RelationshipA weak is-an-extension-of relationship can be represented using

interfaces For example the weak is-an-extension-of relationship

ldquostudents are comparable based on their gradesrdquo can be represented

by implementing the Comparable interface as follows

Person

Student Comparable


implements Comparable

Data fields Constructors and

Methods

Implement the compareTo method

public int compareTo(Object object)

(A) (B)


Class Design

1 Identify classes for the system

2 Describe attributes and methods in each class

3 Establish relationships among classes

4 Create classes


Example 101 Borrowing Loans

NameName BorrowerBorrowerPersonPersonLoanLoan AddressAddress

Loan

Borrower -loan Loan +Borrower() +Borrower(name Name address Address) +getLoan() Loan +setLoan(loan Loan) void +toString() String

Address -street String -city String -state String -zip String +Address() +Address(street String city String state String zip String) +getStreet() String +getCity() String +getState() String +getZip() String +setStreet(street String) void +setCity(city String) void +setState(state String) void +setZip(zip String) void +getFullAddress() String

Defined in Example 67

Person -name Name -address Address +Person() +Person(name Name address Address) +getName() Name +seName(name Name) void +getAddress() Address +setAddress(address Address) void +toString() String

Name -firstName String -mi char -lastName String +Name() +Name(firstName String mi char lastName String) +getFirstName() String +getMi() char +getLastName() String +setFirstName(firstName String) void +setMi(mi char) void +setLastName(lastName String) void +getFullName() String


Example 101 Borrowing Loans cont

The following is a test program that uses the classes Name Person Address Borrower and Loan

BorrowLoanBorrowLoan RunRun


Example 102 The Rational Class

RationalRational RunRunTestRationalClassTestRationalClass

1

1 Add Subtract Multiply Divide

Rational -numerator long -denominator long +Rational() +Rational(numerator long denominator long) +getNumerator() long +getDenominator() long +add(secondRational Rational) Rational +multiply(secondRational Rational) Rational +subtract(secondRational Rational) Rational +divide(secondRational Rational) Rational +toString() String -gcd(n long d long) long

javalangNumber +byteValue() byte +shortValue() short +intValue() int +longVlaue() long +floatValue() float +doubleValue()double

javalangComparable compareTo(Object) int


Class Design Guidelines

Designing a Single Class

Using Modifiers public protected private and static

Using Inheritance or Aggregation

Using Interfaces or Abstract Classes


Designing a Class

A class should describe a single entity or a set of similar operations

A single entity with too many responsibilities can be broken into several classes to separate responsibilities

The String class StringBuffer class and StringTokenizer class all deal with strings for example but have different responsibilities

SystemTextStringBuilder in jdk50


Designing a Class cont

Classes are usually designed for use by many different customers To make a class useful in a wide range of applications the class should provide a variety of ways for customization through properties and methods

Provide a public no-arg constructor and override the equals method and the toString method defined in the Object class whenever possible



Follow standard Java programming style and naming conventions

Choose informative names for classes data fields and methods

Always place the data declaration before the constructor and place constructors before methods

Always provide a constructor and initialize variables to avoid programming errors


Using Visibility Modifiers

Each class can present two contracts ndash one for the users of the class and one for the extenders of the class

Make the fields private and accessor methods public if they are intended for the users of the class Make the fields or method protected if they are intended for extenders of the class

A class should also hide methods not intended for client use but only for internal use within the class


Using the static Modifier

A property that is shared by all the instances of the class should be declared as a static property

A method that is not dependent on a specific instance should

be declared as a static method


Using Inheritance or Composition cont

public class Cylinder private Circle circle Constructors Methods

If polymorphism is desirable you need to use the inheritance design If you donrsquot care about polymorphism the aggregation design gives more flexibility because the classes are less

dependent using aggregation than using inheritance

public class Cylinder extends Circle Constructors Methods



Both interfaces and abstract classes can be used to generalize common features

a strong is-an-extension-of relationship that clearly describes a parent-child relationship should be modeled using classes

since an orange is a fruit their relationship should be modeled using class inheritance

A weak is-an-extension-of relationship can be modeled using interfaces

all strings are comparable so the String class implements the Comparable interface


Using Interfaces or Abstract Classes cont

Interfaces are more flexible than abstract classes because a subclass can extend only one superclass but

implement any number of interfaces However interfaces cannot contain concrete methods

You can combine the virtues of interfaces and abstract classes by creating an interface with a companion abstract class that implements the interface So you can use the interface or its companion class whichever is more convenient


Supplement P Designing Generic Matrix Classes

Objective This example gives a generic class for matrix arithmetic This class implements matrix addition and multiplication common for all types of matrices

GenericMatrixGenericMatrix


Example 103 cont

GenericMatrix

-matrix Object[][] GenericMatrix(matrix Object[][]) +getMatrix() Object[][] +setMatrix(matrix Object[][]) void +addMatrix(secondMatrix Object[][]) Object[][] +multiplyMatrix(secondMatrix Object[][]) Object[][] +printResult(m1 GenericMatrix m2 GenericMatrix m3 GenericMatrix op char) void createGenericMatrix()GenericMatrix add(o1 Object o2 Object) Object multiply(o1 Object o2 Object) Object zero()Object

IntegerMatrix

RationalMatrix


Example 103 cont

Objective This example gives two programs that utilize the GenericMatrix class for integer matrix arithmetic and rational matrix arithmetic

TestIntegerMatrixTestIntegerMatrix RunRun

TestRationalMatrixTestRationalMatrix RunRunRationalMatrixRationalMatrix

IntegerMatrixIntegerMatrix


Framework-Based Programming

The classes and interfaces in the Java API establish a framework for programmers to develop applications using Java

You have to use these classes and interfaces and follow their conventions and rules to create applications This is referred to as framework-based programming

Once you understand the concept of Java and object-orient programming the most important lesson from now on is learning how to use the API to develop useful programs


Framework-Based Programming cont

the framework-based programming using the Java API in our course

Java GUI programming framework in Chapters 11 12 13 and 14

the Java exception handling framework in Chapter 15

the Java IO framework in Chapter 16


Objectives To become familiar with the process of program development

(sect102) To the relationship types association aggregation composition

strong inheritance and weak inheritance (sect103) To declare classes to represent the relationships among the classes

(sect103) To design systems by identifying the classes and discovering the

relationships among these classes (sect104) To implement the Rational class and process rational numbers

using this class (sect105) To design classes that follow the class-design guidelines (sect106) To model dynamic behavior using sequence diagrams and

statechart diagrams (sect107 Optional) To know the concept of framework-based programming using Java

API (sect108)




System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Analysis


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















System Analysis


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















System Design


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Implementation


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Testing


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Deployment


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Maintenance


System Analysis

System Design

Testing

Implementation

Maintenance

Deployment




UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















UML- Use-Case



UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















UML- Use-Case




UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















UML-Class Diagrams





Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















Method Invocation

Activation



aMethod()




setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















setFirstName

setMi

setLastName

setStreet

setCity

setState

setZip


setNumOfYears

setLoanAmount

setName

setAddress

setLoan






Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont





















Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Statechart diagrams



Transition

State1

State2



Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont


















Class Loaded



Object Created


Object Destroyed











Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont


























Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont























Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont


















Association

Aggregation

Composition

Inheritance


Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Association




03 1Teacher



courseList

Constructors

Methods

public class Course


classList


Constructors

Methods


Data fields

private Course[]

courseList

Constructors

Methods






Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont




















Person Supervisor

1

1



Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont


















Name Address Person





public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















public class Name

Data fields

Constructors

Methods

public class Person

Data fields

private Name name


Constructors

Methods


Data fields

Constructors

Methods





Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont




















Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Inheritance



Person Faculty


Data fields

Constructors

Methods

(A) (B)






Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont





















Person

Student Comparable




Methods



(A) (B)


Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Class Design




4 Create classes




Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















Loan













1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont























1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



















1












Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont























Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Designing a Class
















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont



























































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont























































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont












































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont







































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

































Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont


























Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont





















Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Example 103 cont

GenericMatrix


IntegerMatrix

RationalMatrix


Example 103 cont

















Example 103 cont

































Documents

Liang,Introduction to Java Programming,revised by Dai-kaiyu 1 Chapter 10 Object-Oriented Modeling