Notes to OOP features of the Jeroo language

Object oriented programming defines objects

• Each Jeroo you create is an _______________.An object has ________________
• For example a Jeroo has: _____________ , ___________________ , ________________
• An object has _________________ (things it can do)

Classes = definitions of objects When you create a new object it is _______________.

A class describes 3 things:

1. What kind of _______________ is in an object
2. How to make a ______ object of that class (constructor)
   • Try this Example: Jeroo quentin = new Jeroo(10,7,EAST,1) ;
     • Holding ____ flower/s, Location = row ____, column ____, Direction = ________
   • The default constructor creates a Jeroo at location ________ facing ___________ with ____ flowers : Jeroo andy = new Jeroo();
3. The _____________ of an object (the actions it can perform)
• Example: andy.hop() Jeroos can hop, pick flowers, plant flowers, toss nets, and turn.

Syntax is important!
Jeroo andy = new Jeroo(2,5,SOUTH,3); andy is an _________ , Jeroo is the _________

Sending messages to objects

A message looks like this: object . method ( extra information )

• The __________ is the thing we are talking to
• The ____________ is a name of the action we want the object to take
• The ___________________ is anything required by the method in order to do its job. (parameter)

Messages or methods are used to:

• ______ an object some information
• ______ an object to do something
• ______ an object for information (usually about itself)

Using OOP syntax: Rewrite the following English statements as object oriented messages

• Tell the woman named Clarissa to walk 2 steps ____________________________
• Tell the Jeroo named Alan to turn to the right ______________________________

Vocabulary Review (watch out! the order is mixed up!)

• • _________: something that you “say” to an object, either telling it something or asking it for information
• • _________: an instance, or member, of a class
• • _________: the type, or description, of an object
• • _________: extra information sometimes needed when sending a message.
• • _________: a way to create an object. comes as part of the class definition.