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Assume we are building an online dating app. It allows users to indicate which other users they want to date. Complete the following partial class diagram to show the ‘wants to date’ associations. Man Woman Do this while we wait for the lecture to start

Assume we are building an online dating app. It allows users to indicate which other users they want to date. Complete the following partial class diagram to show the ‘wants to date’ associations. Man Woman wants to date

Assume we are building an online dating app. It allows users to indicate which other users they want to date. Complete the following partial class diagram to show the ‘wants to date’ associations. Man Woman wants to date

Assume we are building an online dating app. It allows users to indicate which other users they want to date. Complete the following partial class diagram to show the ‘wants to date’ associations. Man Woman wants to date * * * * ** * *

Man Woman wants to date * * Person

Man Woman wants to date * * Person WantsToDate

Man Woman Person WantsToDate 1 1 * * requestor target

Boil water Put tea leaves in strainer Add hot water Steep for a while Remove strainer Add milk and sugar

Boil water Put tea leaves in strainer Add hot water Steep for a while Remove strainer Add milk and sugar

Boil water Put tea leaves in strainer Add hot water Steep for a while Remove strainer Add milk and sugar Serve tea Clean table Toast bread Cut bread Accept payment Give change Issue receipt Wash utensils Pay bills Order supplies …… … …

Boil water Put tea leaves in strainer Add hot water Steep for a while Remove strainer Add milk and sugar Serve tea Clean table Toast bread Cut bread Accept payment Give change Issue receipt Wash utensils Pay bills Order supplies …… … …

1 chef 2 waiters 1 cashier 1 part time accountant 1 manager 1 cash register 1 stove Serve tea Clean table Toast bread Cut bread Accept payment Give change Issue receipt Wash utensils Pay bills Order supplies …… … … Boil water Put tea leaves in strainer Add hot water Steep for a while Remove strainer Add milk and sugar

1 chef 2 waiters 1 cashier 1 part time accountant 1 manager 1 cash register 1 stove

OOP 4 Abstraction Encapsulation Inheritance Polymorphism

Data function

Data function

Data function Data function Student Course Lecturer

Data function Data Student

Data function Data Student cs2103: Course damith: Lecturer john:

Student john:

Student NgStudent PgStudent UgStudent

{abstract} Student NgStudent PgStudent UgStudent

> Student NgStudent PgStudent UgStudent

:NgStudent :PgStudent :UgStudent :Lecturer study() foo() bar () goo ()

:NgStudent :PgStudent :UgStudent :Lecturer study() foo() bar () goo ()

:NgStudent :PgStudent :UgStudent :Lecturer study() foo() bar () goo ()

:Student :NgStudent :PgStudent :UgStudent :Lecturer

Basic SE knowledge [up to B+] Theory covered  Practice in project  internalize L1-L6 L7-L12 Intermediate SE knowledge [A- to A+] Today Better design Better code Better documentation

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