Objects?

Objects?

1. Technical Defition

   • Class VS Object?
     • Class is the blueprint
       • Only One
       • Can't Be Directly Used
     • Object is made from class
       • As many copies as you need
       • Runs actual code
   • Attributes to hold data
   • Methods to hold
   • Private Vs Public
     • Public can be used by other pieces of code
     • Private can only be used within the object

2. How Do They Relate To Getting Stuff Done?

   • Real World Objects
     • Attributes describe what the thing is
       • A door can be open or closed
       • A door can be locked or unlocked
       • A door has a key
     • Methods describe what the object can do or have done to it
       • The door can be opened
       • Someone can knock on the door
   • Abstract Objects
     • Some pieces of code and data naturally fit together
     • Make code reusable
     • Easy to manage chunks
   • Byte Code
     • References the addresses of other pieces of data
     • Helps compiler match the right code to the right data