CLASS DIAGRAM DASAR REKAYASA PERANGKAT LUNAK

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1 CLASS DIAGRAM DASAR REKAYASA PERANGKAT LUNAK

2 CLASS DIAGRAM Class a descrip9on of a group of objects with similar proper9es, common behavior, common rela9onships, and common seman9cs. Class diagrams are a neat way of visualizing the classes in your system before you actually start coding them up. They re a sta9c representa9on of your system structure. Menggambarkan Objek/Class Pada Sistem

3 OBJECT - CLASS DIAGRAM AOribut Opera9on/Func9on/Method Rela9onship Note / Keterangan (Op9onal)

4 CLASS DIAGRAM MAHASISWA + NIM:String + NAMA:String + ALAMAT:String + TGLLAHIR:Date Nama Class Attribut Class tambahmhs() updatemhs() hapusmhs() Function/method NIM : 2 digit pertama adalah tahun, digit 3 dan 4 adalah angkatan, digit 5 adalah jenjang Keterangan (tambahan / option)

5 Class An object has three characteris9cs: state, behavior and a unique iden2fica2on. A class is a template for instan2a2on of objects. A class diagram contains an aoribute (state) and a method (behavior) sec9on: Class Name attribute: Type = initialvalue... method(arg list): return type... The level of and the numbers of details in the class diagram can vary, this depends on where you are in the development process. It is for example usual to leave the method section out under analyses.

6 AOribute An attribute is the description of a named slot of a specified type in a class; each object of the class separately holds a value of the type. visibility opt name multiplicity opt : type opt = initial-value opt {property-string} opt - (private) only the class can see this attribute # (protected) only the class and all of its subclasses + (public) all classes that can see the class can also see the attribute Example: [1..*] :String Indicating one or more addresses. If no is present you will still have a the empty string ( ). If [0..*] : String is specified, the can be null. Example: Tagged value e.g. Author = Kari

7 CLASS ICON CLASS DIAGRAM MAHASISWA Nama Class + NIM:String + NAMA:String + ALAMAT:String + TGLLAHIR:Date Attribut Class

8 RELATION CLASS DIAGRAM MAHASISWA + NIM:String + NAMA:String + ALAMAT:String + TGLLAHIR:Date tambahmhs() updatemhs() hapusmhs() selectwly(kdpos) 1..* 1 WILAYAH +kdpos:string +nmwilayah:string tambahwly() updatewly() hapuswly() INDIKATOR

9 Multiplicity The mul9plicity is describing the number of par9cipants (classes) involved in an associa9on. For instance an edge in a graph is connec9ng exactly two vertexes. A 1 B A 1..* B An A is associated with exactly one B A 0..1 B An A is associated with zero or one B An A is associated with one or more B A B An A is associated with zero or more B *

10 INDIKATOR RELATION CLASS DIAGRAM

11 INDIKATOR VARIABLE CLASS DIAGRAM + Public # Protected - Private

12 The Three Most Important Relationships In Static Modeling Generaliza2on Base sub Association Class1 Class2 Dependency Class1 Class2 Class Diagrams, page 12

13 Association A rela9onship that describes a set of links between classes of objects, indica9ng some sort of connec9on between objects of the involved classes. Example: student follows a course. In UML class diagrams you can dis9nguish between associa2on, aggrega2on and composi2on (strong aggrega9on). Class Diagrams, page 13

14 CONTOH CLASS DIAGRAM Setiap Nomor Rekening Harus Memiliki ATM REKENING NoRek Nama TglLahir Alamat 1 1 ATM NoATM TglBuat TglAktif Password

15 CONTOH CLASS DIAGRAM satu dosen memiliki (kediaman) atau tinggal di satu wilayah, sedangkan wilayah tersebut bisa saja mempunyai banyak dosen DOSEN NIM NAMA ALAMAT TGLLAHIR 1..* 1 WILAYAH KDPOS NMWILAYAH

16 CONTOH CLASS DIAGRAM satu dosen tidak harus terdata wilayah, sedangkan wilayah tersebut bisa saja mempunyai banyak dosen DOSEN NIM NAMA ALAMAT TGLLAHIR 0..* 1 WILAYAH KDPOS NMWILAYAH

17 CONTOH CLASS DIAGRAM Many To Many Associa9on 1 (satu) dosen dapat mengajar banyak mata kuliah dan 1 (satu) mata kuliah dapat diajarkan oleh banyak dosen. DOSEN KDDOSEN NAMA ALAMAT TGLLAHIR 1..* 1..* MATAKULIAH KDMATKUL NMMATKUL JADWAL JAMMULAI JAMAKHIR

18 CONTOH CLASS DIAGRAM Hindari Penggunaan Associa9on (Garis Terputus), karena memerlukan analisa ulang DOSEN KDDOSEN NAMA ALAMAT TGLLAHIR MATAKULIAH KDMATKUL NMMATKUL 1 1 JADWAL 1..* 1..* JAMMULAI JAMAKHIR

19 GENERALISASI CLASS DIAGRAM Dua Atau Lebih Class Dapat Melakukan Berbagi AOribut dan Method

20 GENERALISASI CLASS DIAGRAM Dua Atau Lebih Class Dapat Melakukan Berbagi AOribut dan Method PEGAWAI NIK NAMA ALAMAT TGLLAHIR DOSEN KDDOSEN MULAINGAJAR HONORPERJAM KARY_HARIAN UPAHHARIAN JMLHARIKERJA KARY_TETAP GAJIBULANAN

21 AGREGASI DAN COMPOSITE CLASS DIAGRAM komposit merupakan hasil gabungan yang tak terpisahkan dari class lainnya, sedangkan agregasi merupakan gabungan tetapi 9dak mutlak PELANGGAN NOPLG NAMA TGLDAFTAR PEL_PLN PEL_TELKOM NOPLGPLN NAMAPLGPLN TGLDAFTARPLN NOPLGTELKOM NAMAPLGTELKOM TGLDFTRTELKOM Class Diagram Agregasi

22 Composition Composi9on is a strong type of aggrega9on indica9ng that the part object only exist as a part of the assembly class. The part object of an aggrega9on will be deleted if the assembly object is deleted. An object may be part of only one composite at a 9me. Composition can be represented in to different ways: assembly class assembly class part class part class Class Diagrams, page 22

23 AGREGASI DAN COMPOSITE CLASS DIAGRAM TAGIHAN NOTAGIHAN TGLTAGIHAN PEMBAYARAN NOEMBAYARAN TGLTAGIHAN Class Diagram Komposit

24 Study Case Now, let s take what we ve learned in the previous tutorial and apply it. In this example we are asked to create a class diagram for a banking system. It must have the following classes: Bank ATM Customer Account Transac9on Checking Account Savings Account Class Diagrams, page 24

25 The bank class represents a physical bank. It has a loca9on and a unique id. This bank also manages several accounts. **There s an associa9on!** Class Diagrams, page 25

26 The ATM class represents a physical ATM. Right off the bat, we can come up with three methods for the ATM: withdraw(), deposit(), checkbalance(). Each of these methods takes the card number as input. In terms of aoributes, an ATM has a loca9on and is managed by a specific bank. Class Diagrams, page 26

27 The customer class represents a real customer. This customer has a name, address, date of birth (dob), card number, and pin. For this person to be considered a customer, they must have an account. **There s another associa9on!** Class Diagrams, page 27

28 The account class represents a bank account. Common aoributes of bank accounts include account number, balance, etc. You can deposit() withdraw() money from the account. In addi9on, banks might offer two types of accounts: a checking account and a savings account. Class Diagrams, page 28

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