Classes

Question 1

An object that belongs to a particular class is called an _________ of that class. The process of creating an object is called ________

Answer 1

instance, instantiation

Question 2

“Garbage collection” definition

Answer 2

objects that are no longer accessible in the program (no longer referred to by any variable) are automatically destroyed and the memory they occupy is recycled.

Question 3

Public fields + methods:

Answer 3

accessible ANYWHERE in all your code

Question 4

Private field + methods:

Answer 4

accessible ONLY within constructors and methods of the same class

Question 5

A requirement on the AP exam is to make ALL instance variables ______

Answer 5

private

Question 6

Encapsulation definition:

Answer 6

The concept of private fields and methods hiding the implementation details of a class from other classes, its clients.

Question 7

A _____ class uses your class through constructors and public methods.

Answer 7

client

Question 8

“Information Hiding” definition:

Answer 8

the practice of supplying as little information to client classes as possible. For example, if a method is used only internally within that class, it should be made PRIVATE

Question 9

Since all instance variables are private, they are not directly accessible in client classes. It is common to provide special public methods, called ________, that return the values of instance variables.

Answer 9

accessors

Question 10

Modifier definition

Answer 10

A public method that sets a new value of an instance variable is called a modifier