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Department of Information Technology

Design Patterns Lab

Lab Manual [Subject Code]

I M Tech II Semester [Branch: IT]

Guru Nanak Engineering CollegeIbrahimpatnam, R R District 501 506 (A. P.)

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Lab Manual for the Academic Year 2008-09

(In accordance with JNTU syllabus)

SUBJECT : DP LAB

SUBJECT CODE :

SEMESTER :

STREAM : Department of Information Technology

INSTRUCTOR : S. ANITHA REDDY

PROGRAMMERS : 1) G. SRINIVASULU

2) M.B. NEELAKANTESHWARA REDDY

Head IT

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Lab Manual for the Academic Year 2008-09

(In accordance with JNTU syllabus)

Suggestions from Principal:

Enhancement if any:

Comments:

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INDEX

S. No Contents

1 Lab Objective

2 Introduction About Lab

3 Guidelines to Students

4

List of Lab Exercises

4.1 Syllabus Programs (JNTU)

4.2 Additional and Advanced Programs

51.Description about UML

2. Description about DP

6 Solutions for Programs

7 Solutions for Additional Programs

8 References

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LAB OBJECTIVE

Overview Object ModelUML

Basic Model Advanced Models

Class & Object Collaboration Sequence

Use Cases Advanced Modeling

Component Diagram Deployment Diagrams

INTRODUCTION ABOUT LAB

There are 66 systems (Compaq Presario) installed in this Lab. Theirconfigurations are as follows:

Processor : AMD Athelon 1.67 GHz

RAM : 256 MB

Hard Disk : 40 GB

Mouse : Optical Mouse

Network Interface card : Present

Software

All

systems are configured in DUAL BOOT mode i.e., Students can boot from

Windows XP or Linux as per their lab requirement.

This is very useful for students because they are familiar with differentOperating Systems so that they can execute their programs in different

programming environments.

Each student has a separate login for database access

Oracle 9i client version is installed in all systems. On the server, account for eachstudent has been created.

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This is very useful because students can save their work ( scenarios, pl/sqlprograms, data related projects ,etc) in their own accounts. Each student work is safe

and secure from other students.

Latest Technologies like DOT NET and J2EE are installed in some systems. Beforesubmitting their final project, they can start doing mini project from 2nd year onwards.

MASM ( Macro Assembler ) is installed in all the systems

Students can execute their assembly language programs using MASM. MASMis very useful students because when they execute their programs they can see

contents of ProcessorRegisters and how each instruction is being executed in

the CPU.

Rational Rose Software is installed in some systems

Using this software, students can depict UML diagrams of their

projects.

Softwares installed: C, C++, JDK1.5, MASM, OFFICE-XP, J2EE and DOT NET,

Rational Rose.

Systems are provided for students in the 1:1 ratio.

Systems are assigned numbers and same system is allotted for students

when they do the lab.

Description about DP

Each pattern describes a problem which occurs over and over again in ourenvironment,

and then describes the core of the solution to that problem,

in such a way that you can use this solution a million times over,without ever doing it the same way twice

A design pattern Is a common solution to a recurring problem in design

Abstracts a recurring design structure Comprises class and/or object

Dependencies

Structures Interactions

Conventions

Names & specifies the design structure explicitly A design pattern has 4 basic parts:

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1. Name 2. Problem

3. Solution

4. Consequences and trade-offs of application Language- and implementation-independent

A micro-architecture

Adjunct to existing methodologies (Unified, OMT, etc.) No mechanical application

The solution needs to be translated into concrete terms in the application

context by the developer

Goals

Codify good design Distil and disseminate experience

Aid to novices and experts alike

Abstract how to think about design Give design structures explicit names

Common vocabulary

Reduced complexity Greater expressiveness

Capture and preserve design information

Articulate design decisions succinctly

Improve documentation Facilitate restructuring/refactoring

Patterns are interrelated

Additional flexibility

Description about UML

INTRODUCTION

The Unified Modeling Language (UML) is a graphical language for

visualizing, specifying, constructing, and documenting the artifacts of a

software-intensive system.The UML offers a standard way to write a system's blueprints, including

conceptual things such as business processes and system functions as well as

concrete things such as programming language statements, database schemas,and reusable software components."

The important point to note here is that UML is a 'language' for specifying

and not a method or procedure. The UML is used to define a software system;

to detail the artifacts in the system, to document and construct - it is thelanguage that the blueprint is written in. The UML may be used in a variety of

ways to support a software development methodology.

A modeling language for specifying, visualizing, constructing, and

documenting Used to derive or evolve a system Means to capture and

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- State Diagram - The status condition and responses of theelements of a system

- Activity Diagram - The activities of the system

The implementation model view

- Component Diagram - The organization of the elements realizingthe system

The Environment model view

- Deployment diagram - Configuration of environment elements and

the mapping of elements realizing the system into them

Modeling Mechanisms

Perspectives define a particular point of view

Dichotomies define how something can be viewed from different

perspectives and discover inconsistencies within models

Layers of abstraction define a particular level of abstraction and

establish the level of detail, enables focused communication, usedfor organization of models

Extension mechanisms define the means of customizing andextending the UML

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Index PageS. No. Date Program / Experiment

PageNo.

Sign / Remarks

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Annexure - 2


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Index Page

S. No. Date Program / ExperimentPageNo.

Sign / Remarks

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Annexure - 2


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UML Syllabus Programs (JNTU)

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S. No Programs1. Use case Diagram for Librarian Scenario

2. Using UML design Abstract factory design pattern

3. Using UML design Adapter-class Design pattern

4. Using UML design Adapter-object Design pattern

5. Using UML design Strategy Design pattern

6. Using UML design Builder Design pattern

7. Using UML design Bridge Design pattern

8. Using UML design Decorator Design pattern

9. User gives a print command from a word document. Design to represent thischain of responsibility Design pattern

10. Design a Flyweight Design pattern

11. Using UML design Facade Design pattern12. Using UML design Iterator Design pattern

13. Using UML design Mediator Design pattern

14. Using UML design Proxy Design pattern

15. Using UML design Visitor Design pattern

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1. Use case Diagram for Librarian Scenario.

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2. Using UML design Abstract factory design pattern.

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3 .Using UML design Adapter-class Design pattern.

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4. Using UML design Adapter-object Design pattern.

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5. Using UML design Strategy Design pattern.

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6. Using UML design Builder Design pattern.

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7. Using UML design Bridge Design pattern.

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8. Using UML design Decorator Design pattern.

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9. Design to represent this chain of responsibility Design pattern.

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10. Design a Flyweight Design pattern.

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11. Using UML design Facade Design pattern.

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12. Using UML design Iterator Design pattern.

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13. Using UML design Mediator Design pattern.

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14. Using UML design Proxy Design pattern.

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15. Using UML design Visitor Design pattern.

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