Welcome to analysis and design object

Class ��º��º��Ѻ��Ǣͧ object ��ͧ�ҡ㹡��ҧ object ˹�� е�ͧ��ҧ�ԧ��ҧ�Ҩҡ Class �� Ѻ��ҧ��ҹ�ѡ��ѧ˹�� ͧ��ҡ��ҧẺ�Źŧ��ǡ�͹ ��ͨҡ��鹡�ŧ��ҧ��Ẻ ��觶��ҧẺ��ҹ�� ö��ҧ��ҹ�� 㨤��ᵡ��ҧ��ҧ class �� object ��ҡ�� ʴ�� class ��Ẻ�ٻ��Ƿ��ҧ�ҡ��(templates) �� object �� ٻ��Ƿ��ҧ�ҡ��Ẻ�ٻ��Ƿ��˹�ҷ�� class �� object ��١��ҧ��Ҩ��ѡɳ��͹�Ѻ class ��繵�Ẻ ��¤س ��ѵԢͧ object ��Ǩ��ö��س��ѵ�੾�Тͧ��ͧ�� 㹷��ʴ�� object�� 繤س��ѵ�੾�Тͧ�� object �ͧ ��س��ѵԾ�鹰ҹ��Ѻ��׺�͡�Ҩҡ class ��繵�Ẻ

��ҹ��ҧ��ʴ�� Java ��ʴ��繶֧��ᵡ��ҧ��ҧ Class �� Object �ѧ��

Data �ͧ object �ж١᷹�� attribute �·�� object �� attribute ��ʶҹТͧ object ��»á��Ҩ��͹حҵ�� object ��Ҷ֧ attribute �� object �� (�¡�˹�ʶҹ�� private) attribute ��¡��¡��ҹ method �� object ��ҹ�� ·�� attribute �Ҩ��繤�Ҥ�� ͵��÷�� method �Ԩ�óҵ��ҧ�ҡ Person class �� attribute �� name �� address �ҡʶҹз��˹�� private �ʴ�� attribute name �� address �ж١��¡��ҡ��¹͡ Person class �� java ��ö��˹�� attribute �� public ��ö��¡��ҡ��¹͡

public class Person {

private String name, address ;

public String getName () {

return name ; }

public void SetName (String n) {

name = n ; }

public String getaddress () {

return address ; }

public void setAddress (String adr) {

address = adr ; }

}

Method ��ͧ��ͷ�� class �� object �� method ��ҧ object �ѹ��ö��¡��觡ѹ��Сѹ�� (�� method ��ʶҹ�� public ) 㹷ҧ Object-Orient programming �� method ��ö��º��º��Ѻ function , procedure �� subroutine � Precedural programming ��Шҡ��ҧ��ͧ Person class ��Ǣ�͡�͹ �� method �� getName( ), setName( ) , getAddress( ) �� setAddress ( ) 㹡��͡Ẻ�ҧObject-Orient �� method 㹡�äǺ��Ҷ֧ attribute �ҡ object ��

Message �� 㹡��ҧ object ��ҧ�� object A ��ͧ�� method �ͧ object B �¡�÷�� object A �� message 价�� object B �� object B ��еͺʹͧ��觤�ҷ�� object A ��ͧ��á�Ѻ�

public class Person {

private String name , address ;

public String getName () {

return name;

}

public void SetName (String n) {

name = n;

}

public String getAddress () {

return address ;

}

public void setAddress(String adr) {

address = adr ;

} }

��˵�㹡�� message ˹�� 觼ŷ�� message ��蹶١�觵�ʹ�� ¡�Ըա�ù�� sequential operation ͸Ժ��ѧ�� object ˹�� message ��ͧ�ͤ�Ҽ��Ѿ�רҡ�ա object ˹�觤�Ҽ��Ѿ��鹨��١�觤׹��Ѻ��㹷鹷� ��ҡ�кǹ��÷ҧ message ��蹨��ó� ��ҧ�� object A �� message ��ѧ object B �� object B ��觤�Ҽ��Ѿ��Ѻ��ѧ object A 㹷ѹ�� ͧ�ҡ��кǹ��㹢ͧ object B �� message �١��ѧ object C �� ѡɳз�� ѹ object C �� message � �ѧ object D �� object D ��Ф׹��Ҽ��Ѿ��ѧ object C ��ͨҡ�� object C ��觤�ҹ��׹��ѧ object B ��ǡѹ object B ��觤�ҹ��Ѻ��ѧ object A �ҡ��кǹ��ù�� object A ��Ѻ��ä׹��Ҩҡ object B ��͡�кǹ��ҹ��ó��

Encapsulation ��ҡ�ҹ��ҧ˹�觢ͧ�Ǥ��Դ��ԧ Object-Oriented ��觢�ʹբͧ Encapsulation ��͡�û�ͧ�ѹ attribute (data) �ͧ object �ҡ�� ж��ǹ�ͧ�� ͹حҵ��ա��Ҷ֧ attribute ��ͧ��ǹ�� 觼�� attribute ��鹧��µ�͡�ö١��ҧ�Դ� �� attribute ��¹�ŧ� ��觡��Դ�� µ��Encapsulation �� attributes �� methods ��¡ѹ

Encapsulation �з�˹�ҷ��ͧ�ѹ�� object ��蹷��¹͡ ��Ҷ֧ object ˹�� ҧ��Ш��੾�� method �� object ��ҹ�鹷��ö�Դ��͡Ѻ attribute �� object ��ǡѹ��¡��ҡ�� Encapsulation �դس��ѵԢͧ Information hiding

Information hiding ��͡�èӡѴ��ͧ��繢�� Object �� á�˹��س�ѡɳ��繓public��ö��͡Ѻ object ��¹͡�� С�˹�� private� ��ͨӡѴ attribute �� object ��ҹ��

��ʹ��ա��ҧ˹�觢ͧ�� Encapsulation �� attribute �� method ��¡ѹ��˹�� object ��觶��ա��¹�ŧ�Դ�� object ˹�觡��觼š�з� �͡�ҡ�� method �ͧ object ��ö�١��¹�ŧ��ҧ��ǡѺ object �� Attribute ��/ �� method �ͧ object �� ǹ��ж١��͹�ҡ object

��ҧ ��ҡ�˹�� video cassette recorder (VCR) �� object type ˹�觨�� Sony VCR �� object ��ػ�ó� electronics ��ͧ �� data (attribute) ��س��ö��Ҷ֧�� ͧ�ҡ��Դ, ��§��ͤ��¢ͧ�ػ�ó� electronice �س��ö��§ operations (method) �� ŧ , ��͹��Ѻ , �ѹ�֡ , �Թ˹�� , ��ش��Ǥ�� ˹��ҹ�� 觨�� ٻẺ�ͧ��觧ҹ�� interface (��觨��ǵ��) �ػ��ǹ�� Encapsulation ��ػ�ó� Encapsulation ��ػ�ó� electronics ��С�û�Ժѵԡ�� object ��ǡѹ

Class Employee {

public int id:

private string name;

private string department ;

public void setname (String n) {

name = n; {

public String getAddress () {

return name ; }

public void setdepartment (String d) {

departmen = d; }

public String getdepartment () {

return department

}