Object Oriented Design and Design Pattern

This repository contains Java programs that demonstrate various concepts in Object-Oriented Analysis and Design (OOD) and Design Patterns. The labs cover topics related to multiple interface/inheritance and various design patterns. Each lab experiment is implemented as a separate Java program.

Lab Experiments on Object Oriented Analysis and Design

1. Multiple Interface/Inheritance Demonstration

• The program in this experiment demonstrates the use of multiple interfaces/inheritance in a Java application. The application chosen showcases the practical application of this concept.

2. PET Management System

• This experiment involves the implementation of a PET management system, covering aspects related to PET shops, PET care, and PET services. The program follows appropriate object-oriented design principles.

Lab Experiments on Design Patterns

3. Facade Design Pattern for Banking Service

• Write a Java program to demonstrate the implementation of a facade design pattern for a Banking Service with Checking, Saving, and Investment modules.
• Expressing this in Java can be broken down into steps
  • Design the interface
  • Implement the interface with one or more classes
  • Create the facade class and wrap the classes that implement the interface.
  • Use the facade class to access the subsystem

4. Composite Design Pattern for Generic Housing Structures

• Write a Java program to demonstrate the implementation of a composite design pattern by using an example with a building composed of generic housing structures.
• Expressing this in Java can be broken down into steps
  • Design the interface that defines the overall type
  • Implement the composite class
  • Implement the leaf class

5. Proxy Design Pattern for Online Retail Store

• Write a Java program to demonstrate the implementation of a proxy pattern for an online retail store with global distribution and warehousing.
• Expressing this in Java can be broken down into steps
  • Design the subject interface
  • Implement the real subject class
  • Implement the proxy class

6. Decorator Design Pattern for a Web Page

• Write a Java program to demonstrate the implementation of a decorator pattern for a web page, which might display complex behavior, such as only allowing access to authorized users, or splitting search results across multiple pages.
• Expressing this in Java can be broken down into steps
  • Design the component interface
  • Implement the interface with your base concrete compoent class
  • Implement the interface with your abstract decorator class
  • Inherit from the abstract decorator and implement the component interface with concreate docorator classes.

7. State Design Pattern for Vending Machine Functionality

• Write a Java program to demonstrate the implementation of a state design pattern for a vending machine functionality on purchasing items.

Lab Experiments on Object Oriented Design and Design Pattern (Solve)

Experiment	Description	Code Link
1. Multiple Interface/Inheritance Demonstration	Understand the power of multiple interfaces/inheritance in Java. The program in this experiment demonstrates the practical application of this concept.	Code
2. PET Management System	Implement a PET management system, incorporating object-oriented design principles. Covering aspects related to PET shops, PET care, and PET services.	Code

Lab Experiments on Design Patterns

Experiment	Description	Code Link
3. Facade Design Pattern for Banking Service	Implement a facade design pattern for a Banking Service with Checking, Saving, and Investment modules. The Java program demonstrates the design and usage of the facade pattern.	Code
4. Composite Design Pattern for Generic Housing Structures	Demonstrate the composite design pattern using a building composed of generic housing structures. Learn how to design interfaces, implement composite classes, and create leaf classes.	Code
5. Proxy Design Pattern for Online Retail Store	Implement a proxy pattern for an online retail store with global distribution and warehousing. This Java program guides you through designing subject interfaces, implementing real subjects, and creating proxy classes.	Code
6. Decorator Design Pattern for a Web Page	Implement a decorator pattern for a web page, displaying complex behavior like access control and search result pagination.	Code
7. State Design Pattern for Vending Machine Functionality	Implement a state design pattern for a vending machine functionality on purchasing items.	Code

Happy coding!