CSE 2011 Lecture 4

Inheritance

• An object is a collection of data and methods to operate on that data
  
  • Method is a procedure, function, operation
    
• For a motor
  
  • turnOn
    
  • turnOff
    
  • setSpeed
    
• An Object is an instance of a Class
  
  • The class provides the template for the object
    
• Template gives
  
  • Data
    
  • Methods
    
• Class contains methods, objects contain the data
  
  • Typically pictured as an object pointing to the class
    
  • Because the object uses methods
    
  • Objects share methods
    

Container

• A collection of data is stored in a container
  
  • The data can be of different sub-types
    
• Containers can be organized in different ways
  
  • Sequence,
    
  • Tree's
    
  • Table
    

Sequence

• A list of objects in order
  
  • Contains a head, front, tail and last
    
  • Sequence = <head. ^ tail = front ^ <last>