1. Basic Object-Oriented Concepts
22-Apr-17

2. Object Oriented Programming
Object-oriented programming (OOP) is a programming language model organized around objects
Objects have a state or properties (information about the object stored in variables) size, height, position, balance
Objects have a behavior or actions that it performs. Methods. move ____ turn____
Programming languages have predefined methods for each class.

3. Class <CAR> creates cars
Everything in Java is in a class. Class called Car The class creates objects
The class represents a template for creating objects of that class.

4. Class Car creates car objects: Share same attributes but they store different values.
<7_series_BMW>
Object
<VW_Beetle>
Object
<Ford_Mustang>
Share same attritubes: They have a …….
color –
model#
name
doors
You would store this in variables because it would be different for each object.

5. Example: A “Rabbit” object
You could (in a game, for example) create an object representing a rabbit
It would have data which is stored in variables.
How hungry it is? = hungry = true;
How frightened it is? frightened = false;
Where it is? location = 0;
What is its name? name = “Rabbit”;
And methods: things it can do
eat, hide, run, dig

6. Class <CAR> startEngine checkEngine fillTank getAmountOfGas
Method of a Class
Class
<CAR>
Every class has predefined methods for the object created. Methods allow the object created to perform an action
startEngine
checkEngine
fillTank
getAmountOfGas

7. Control flow of a program
Three types of control flow that are used to execute a program
Sequentially - all code will run sequentially
Conditionals (if statements)
Loops (repeats)

8. Introduction to programming thru SNAP
Cloud storage if you create user name
The program interface
Click on object and script area to build your code