UML Modeling using MagicDraw

1. UML Modeling using MagicDraw UML for Java Programmers

2. UML Modeling using MagicDraw Topics? • What is UML • How UML is used • What is MagicDraw • What UML and MagicDraw provides for Java programmers? • we go through features supported in MagicDraw • Demo

3. UML Modeling using MagicDraw What is UML? • The UML (Unified Modeling Language) was designed with two objectives in mind: • To reflect the best practices of the industry • To demystify the process of software system modeling.(refer to Appendix A. for more details) • UML is a graphical notation for drawing diagrams of software concepts, which allows your development team to quickly grasp the functionality contained within the application. • UML is a language and a process with neutral notation, which means that you may use it to design your entire OO system in any programming language and any software development process and modeling. 

4. UML Modeling using MagicDraw How UML is used? In recent years, the tools for OO software modeling have emerged, followed by the development of the visual modeling approach. Visual modeling means that you first design your system by drawing diagrams (blueprints) and then employ tools to convert those diagrams into code.  What is visual model tools?  Today, visual modeling tools provide many features that replace some of the more tedious tasks for the designer, programmer, and documentation writer. 

5. UML Modeling using MagicDraw What is MagicDraw? MagicDraw is a visual UML modeling and CASE tool with teamwork support. Designed for Business Analysts, Software Analysts, Programmers, QA Engineers, and Documentation Writers; this dynamic and versatile development tool facilitates analysis and design of Object Oriented (OO) systems and databases.   MagicDraw Java version – Provides Code engineering for Java, Java bytecode. Integration with Java IDEs. The detailed list of MagicDraw features find at: http://www.magicdraw.com/files/brochures/a4/MagicDrawDataSheet.pdf

6. UML Modeling using MagicDraw UML Diagrams ? In software development, the diagram is the equivalent of a blueprint. To meet the various needs of many parties, we often need several different “blueprints” of the same system. UML has three main kinds of diagrams: • Static Diagrams: Classes, Objects, data structure • Dynamic Diagrams: show flow of executions and change of states • Physical Diagrams: source file,libraries, data files MagicDraw supports the following diagrams defined in UML1.4:Class diagram,Object diagram,Use case diagram,Statechart diagram,Activity diagram,Collaboration diagram,Sequence diagram,Component diagram,Deployment diagram

7. UML Modeling using MagicDraw Class Diagram ? A class diagram is a graphic representation of the static structural model. It shows classes and interfaces, along with their internal structure and relationships. Classes represent types of objects that are handled in a system.The instances of those types (objects) are instantiated only on the runtime and are represented by an object and interaction diagrams. Classescan be related to each other in a number of ways: • Associated (connected to each other) • Dependent (one class depends/uses another class) • Specialized (one class is a subtype of another class) • Packaged (grouped together as a unit – package).

8. UML Modeling using MagicDraw Class Diagram continue…? A class diagram does not express anything specific about the relationships of a given object, but it does abstractly describe the potential relationships of one object to other objects. A class diagram is the logical map of your existing or future source code.  FIG 1.0 BankAccount Class Diagram   public class BankAccount { } BankAccount -acctId: String -balance: double +deposit(…): void +withdraw(…): double -calcInterest(…): double

9. UML Modeling using MagicDraw Class Diagram continue…? class Bank { private String city; private int currentIndex=0; Privat BankAccount [ ] accounts; public void add(…) { } public BankAccount getAccount(…) { } } Bank BankAccount -city: String -currentIndex:int -accounts: BankAccount -acctId: String -balance: double +add(…): void +getaccount(…): BankAccount +withdraw(…): void +deposit(…): double -calcInterest(…): double

10. UML Modeling using MagicDraw Class Diagram continue…? Createa class diagram All options associated with a class can be set in the Class Specification dialog box.

11. UML Modeling using MagicDraw Object Diagram ? Classes represent types of objects that are handled in a system.The instances of those types (objects) are instantiated only on the runtime. Object Class myAccount BankAccount -acctId: String -balance: 30.00 -acctId: String -balance: double +deposit(…): void +withdraw(…): double -calcInterest(…): double +deposit(…): void +withdraw(…): double -calcInterest(…): double

12. UML Modeling using MagicDraw State Diagram? Objects change their state as a request in executing a method.. In general, The behavior of objects of a class can be described in terms of states and events, using a state machine connected to the class under construction. A State Machine is a specification of the sequence of states through which an object or an interaction goes in response to events during its life A State Diagram is a graph that represents a state machine .

13. UML Modeling using MagicDraw Interface ? An interface is a specifier for the externally-visible operations of a class, component, or other classifier (including subsystems) without specification of internal structure. Each interface often specifies only a limited part of the behavior of an actual class. interface Creditchecker { } public class BankAccount implements CreditChecker { } “interface” Creditchecker BankAccount

14. UML Modeling using MagicDraw Abstract classes ? In UML there are two ways to denote that a class or method is abstract. You can write the name in italics, or you can use the {abstract} property, both options are shown below: public abstract class Accounts { private String name; } Accounts name Accounts {abstract} name

15. UML Modeling using MagicDraw Properties? Properties, like {abstract} can be added to any class, they represent extra information for the class, such as CustomerAccounts {author=ellie, Date=20050804, File=account.java, Private}

16. UML Modeling using MagicDraw Association ? An Association between classes often represent instance variables that hold references to other objects. public class Bank { private BankAccount CustomersAccounts[100]; } 100 CustomersAccounts Bank BankAccount

17. UML Modeling using MagicDraw Inheritance ? An inheritance between classes often represent instance variables that hold references to other objects. public class BankAccount { } public class SavingAccount extends BankAccount { } public class CheckingAccount extends BankAccount { } BankAccount SavingAccount CheckingAccount

18. UML Modeling using MagicDraw Override Operations ? Overriding Operation When you inherit classes from the base class, which has abstract functions, you have to redefine them in the inherited classes. The implement and override operations tool will help you generate operations that are defined as abstract in the base class. The command Implement/Override Operations command can be invoked in 2 cases: • When one classifier inherits operations from the base classifier (Generalization relationship). • When some classifier implements Interface (Realization relationship).

19. UML Modeling using MagicDraw Override Operation continue ? To start the Implement/Override Operations tool From the shortcut menu of the selected class, choose Tools. Then, choose Implement/Override Operations. The Select Operations to Implement, Override dialog box appears. 

20. UML Modeling using MagicDraw MagicDraw Tools? MagicDraw provides the following tools and wizards to help you perform the design tasks in your job quickly and easily: • Reports– prepares HTML, PDF, or RTF report documents describing the model. • Class Diagram Wizard– helps to create and customize new class diagrams. • Package Overview Diagram Wizard– generates the package dependency diagram for packages in your project. • Tools for Analysis– prepares diagrams and report documents of the relationships between classes in the UML model. • Hierarchy Diagram Wizard • Content Diagram Wizard- generates content of diagrams that are used in the project. • Creating Setters / Getters– creates getting and setting operators for attributes defined in the class. Helps in analyzing the class. • Implementing or Overriding Operations– creates defined operations down the inheritance tree. • And more…

21. UML Modeling using MagicDraw MagicDraw Demo? MagicDraw Basics demo : MD_viewlets_Basics.exe This demo introduces the very basics of working with MagicDraw: shows how to create project and diagrams, outlines the main working environments, navigates through elements drawing and presentation options. Code Generation : MD90_viewlets_Codegeneration.exe This demo will show you how to perform code generation in the MagicDraw UML. You will get acquainted with source code generation from model and see how model changes are reflected in the code.

22. UML Modeling using MagicDraw Information on MagicDraw ? http://www.magicdraw.com

23. UML Modeling using MagicDraw Appendix A. Process of software system modeling: Without UML: • Define problem • Go to whiteboard • Draw high level boxes • Draw flowcharts(show: behaviors and state diagram) • Write High level Specification. • Write functional specification(function name,parameters,..) • Code • Analyze • Build • Test With UML and UML tools such as MagicDraw: • Define problem • ..And use UML concept and tools such as MagicDraw to do the rest