Final Exam

Question 1

How can I make a line in processing?

Answer 1

line(x1,y2, x2, y2)

Question 2

How can I make an ellipse in processing?

Answer 2

ellipse (x, y, width, height)

Question 3

How can I make a rectangle in processing?

Answer 3

rect(x, y, width, height)

Question 4

How can I make a triangle in processing?

Answer 4

triangle(x1, y1, x2, y2, x3, y3)

Question 5

what does the keyword class mean?

Answer 5

declares class

Question 6

what does the keyword extends mean?

Answer 6

tells the programmer that a class inherits attributes from another class.

Question 7

what does the keyword implements mean?

Answer 7

declares a class that implements an interface.

Question 8

what does the keyword abstract mean?

Answer 8

indicates that a class or a method is abstract and cannot be instantiated or declared.

Question 9

what does the keyword package mean?

Answer 9

Declares a package for organizing classes, prevents naming conflicts.

Question 10

what does the keyword public mean?

Answer 10

Lets the programmer know that this class can be used and extended into other classes.

Question 11

what does the keyword private mean?

Answer 11

Let’s the programmer know that this class cannot be used and extended into other classes. Cannot be used in subclasses or subpackages.

Question 12

what does the keyword protected mean?

Answer 12

Let’s the programmer know that this class cannot be accessed in another class but can be used in subclasses or subpackages. Less restrictive than private but more restrictive than public.

Question 13

what does the keyword static mean?

Answer 13

This lets the programmer know that this variable, method, or sub-class can be accessed through all instances of the class.

Question 14

what does the keyword final mean?

Answer 14

This lets the programmer know that the class, method, or variable is unchangeable and unextendable.

Question 15

What does the wrapper class do?

Answer 15

Allows a primitive type to be stored as an object. Example: Integer ob1; int num1 = 70; ob1 = num1;

Question 16

What comes first in the anatomy of a class?

Answer 16

Data declarations, then method declarations.