Java OOP

What java library must be imported to get user input for the Scanner class?

• DecimalFormat( ) 
• javax.swing.JOptionPane;
• java.util.Scanner;
• java.util.Random

What is a constructor?

• another name for an instance variable
• the method that creates an object, or instance, of the class
• the return type of a method
• the instantiation of an object

What is 1001 0011 in decimal?

• 148
• 156
• 147
• none of these

What does it mean when a method is static?

• it modifies or mutates an object
• it is private
• it applies to the entire class, not just one object or instance
• it is overloaded

What is the result of the following expression when x is 3583?
(x/10)%10

• 3
• 8
• 83
• 300

GradStudent extends class Student.  Which of these is NOT valid?

• Students s = new Student()
•  Student s = new GradStudents()
• GradStudent g = new Student()
• GradStudent g = new GradStudent()

The operators * and + have the same precedence.

• True
• False

A precise step-by-step procedure that solves a problem or a achieves a goal is ....

• a method
• an algorithm
• a class
• an interface

_________________ means the method has no return value. 

• void
• static
• concatenation
• string

___________________ variable is a variable defined in a class.

• reference
• instance
• modulous
• void