FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 3: Using Methods, Classes and Objects

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 31

Multiple Choice

Review LaterAdd Note

Review Later

Methods that retrieve values are called ____ methods.

A) static
B) accessor
C) class
D) mutator

E) C) and D)
F) A) and B)

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

The ____ method executes first in an application, regardless of where you physically place it within its class.

A) start()
B) run()
C) main()
D) execute()

E) C) and D)
F) A) and D)

Correct Answer

verified

Show Answer

Question 33

Essay

Review LaterAdd Note

What are the four components of a method header?

What is the difference between a mutator method and an accessor method? Provide an example of each.

An application's main() method must have a void return type.

Match each term with the correct statement below.

public class Employee {    private int empNum;    private double empSalary; ​    public void setEmpNum(int emp)    {       empNum = emp;    }     public void setEmpSalary(double sal)    {       empSalary = sal;    } } Given the class defined in the code above, write the Java statements that will create a new employee instance called employee15 and assign an empNum of 15 and empSalar y of 500.00 to that employee instance.

Does a programmer need to write every class he or she uses? Why or why not?

Match each term with the correct statement below.

Which of the following is NOT an initial value assigned to an object's data field by a default constructor?

Any class can contain an unlimited number of methods.

Parentheses in a method declaration contain parameters that are "dropped into" the method.

Access specifiers are sometimes called access____.

A method header is also called a(n) _____.

The name of the ____ is always the same as the name of the class whose objects it constructs.

A(n) ____ constructor is one that requires no arguments.

Every object is a _____ of a more general class.

Methods used with object instantiations are called ____ methods.

How do you use a value returned from a method? Provide an example.

Normally, you declare constructors to be ____so that other classes can instantiate objects that belong to the class.