Object Oriented Programming

Object Oriented Programming Paradigm (OOPP)

• Core Concept: OOPP models software applications as a collection of related real-world objects that interact with each other to facilitate human-computer interaction.
• Key Components:
  • Objects: Real-world entities characterized by state (stored in attributes) and behavior (disclosed through methods).
  • Classes: Blueprints for objects; they encapsulate a group of similar objects and define their mutual methods.
  • Packages: Collections of related classes.
• Fundamental Principles:
  • Data Encapsulation: Hiding implementation details by binding code and data together to protect them from outside interference.
  • Public Interface: The specific methods exposed to the outside world, allowing controlled interaction and data security.
  • Inheritance: The mechanism by which one object acquires the properties of another.
  • Polymorphism: The ability for multiple classes to use the same method name, with specific redefinitions for derived classes.
• Application in UI Design:
  • Object-oriented modeling (OOM) unites users with software objects to achieve specific goals.
  • Design Process: Starts with user requirement analysis, followed by dialogue structure specification, and development/testing against Use Cases.
  • Analysis Objects: Key objects identified during the analysis of Use Case processes; their relationships are documented in object diagrams.