xdxdxdxd Housh

What is returned by the following code? int cube(int x) { x = 3; return x * x * x; }

27

If a class is named Student, then every constructor would be named ___.

Student

Suppose you have a class called Turtle. What coding would create a new Turtle object?

Turtle turtlename = new Turtle ();

What is this code missing? double doIt(double x) { while (x>0) x -= 3; }

a return statement

A(n) ___ is a piece of information passed to a method.

actual parameter

The values passed to a method when it is called are...

actual parameters

A(n) ___ is a class method that is called when you create an object of the class using new.

constructor

The term ___ describes the process of combining an object's data and behavior into a single software entity and the details of implementation are hidden.

encapsulation

t/f? A variable declared in one method may be used in any other method in the same class.

false

t/f? Constructors should always return void.

false

t/f? Every method must have a return statement.

false

t/f? Methods that provide services to clients should be made private.

false

t/f? Only one object may be created from a particular class.

false

t/f? Parameters to methods may only be primitive types.

false

The parameters coded within the parentheses in a method's definition are called...

formal parameters

Small, usually private, methods defined within a class to assist in some processing required for the class are referred to as...

helper methods

Object is to class as...

house is to blueprint

A variable declared within a method is called a ___ variable.

local

A(n) ___ is an action that a Java object can perform.

method

Method overloading refers to...

more than one method with the same name

Methods in a class definition that are used to change the state of an object are called...

mutators

Within a class the use of two or more methods with the same name but different signatures is called method ___.

overloading

Instance variables for Java classes are nearly always declared to be ___.

private

If a method for a class needs to be visible to clients of the class, the method should be coded using the ___ modifier.

public

What should be used for services that an object provides to client code?

public methods

Assuming the existence of a class named Car, the variable car1 in the program statement: car1 = new Car(); is actually a(n) ___ to a Car object and is not an object itself.

reference

What characteristic of an object distinguishes that object from all other objects in the same program?

state

When a Coin object is passed to the println method,

the toString method is called on the object to get the string to print

t/f? A constructor must have the same name as its class.

true

t/f? An object may be made up of other objects.

true

t/f? Instance variables that are declared public violate the principle of encapsulation.

true

t/f? Overloaded methods have a signature, which includes the number, type, and order of parameters.

true

What term is used to describe the class definition statement keywords public and private?

visibility modifiers