Chapter 2 - Classes and Objects Flashcards
1
Q
When designing a class, think about
A
Things the object knows
Things the object does
2
Q
Instance variables
A
Things an object knows about itself
3
Q
Methods
A
Things an object can do
4
Q
State
A
Instance Variables (Knows)
5
Q
Behavior
A
Methods (Does)
6
Q
What represent an object’s state (The Data)
A
instance variables
7
Q
Think of instance as another way of saying
A
object
8
Q
A class is
A
A blueprint for an object
9
Q
One analogy for object is
A
A packet of unused Rolodex cards. Same blank fields (ivars) Create a new card create a new object
10
Q
Dot operator (.) gives?
A
gives access to an object’s state and behavior (ivars and methods)
11
Q
Two uses of main
A
Test your real class Launch/start a java application
12
Q
I represent ‘state’
A
instance variables
13
Q
I declare methods
A
class
14
Q
I am used to create object instances
A
class
