Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
____ are insertions within the code that explain the purpose of the code
statements.
a. | Comments | c. | Requirements | b. | Algorithms | d. | Solutions |
|
|
|
2.
|
____ are values that cause a certain rule to become effective.
a. | Boundary values | c. | Operation values | b. | Method values | d. | Trigger values |
|
|
|
3.
|
____ allows an instruction to be given to an object using a generalized rather
than a specific, detailed command.
a. | Aggregation | c. | Inheritance | b. | Encapsulation | d. | Polymorphism |
|
|
|
4.
|
The System class extends methods from its superclass, which is the ____
class.
a. | Array | c. | Object | b. | Exception | d. | JavaBean |
|
|
|
5.
|
A(n) ____, identified by the = new notation, declares the type of data or object
to be stored and assigns it a variable name in the computer's memory.
a. | constructor | c. | declarer | b. | destructor | d. | initializer |
|
|
|
6.
|
The immediate superclass of a TextArea component is ____.
a. | TextContainer | c. | TextComponent | b. | Text | d. | TextField |
|
|
|
7.
|
Consider the following for statement: for (int counter = 1; counter < 1;
counter --). How many times will the loop execute?
a. | 0 | c. | 2 | b. | 1 | d. | infinite number of
times |
|
|
|
8.
|
To represent a null string, type ____.
|
|
|
9.
|
Which of the following obeys the order of operator precedence rules for
arithmetic operators (from highest to lowest)?
a. | * , %, + | c. | *, +, % | b. | %, - , / | d. | +, /, % |
|
|
|
10.
|
The ____ method assigns a caption or String to an object.
a. | add() | c. | setForeground() | b. | println() | d. | setText() |
|
|
|
11.
|
Which of the following is a valid condition for an if statement? Assume the
variable "done" is a boolean.
a. | (done=true) | c. | (done == "false") | b. | ((done == false) ||
(done == true)) | d. | (done ==
false && done) |
|
|
|
12.
|
Which of the following is not a requirement for method arguments and
their respective parameters?
a. | An argument and its respective parameter must have the same identifier
name. | b. | There must be the same number of arguments as parameters. | c. | The arguments must
be in the same order as the parameters. | d. | Each argument must be of the same data type as
its respective parameter. |
|
|
|
13.
|
All of the following are conceptual constructs of object-oriented programming
except ____.
a. | encapsulation | c. | iteration | b. | inheritance | d. | polymorphism |
|
|
|
14.
|
Which of the following is the correct shortcut syntax for creating and
initializing an array?
a. | boolean[] results = {true, false, true}; | c. | boolean[] results =
[true, false, true]; | b. | boolean results = {true, false,
true}; | d. | boolean[3]
results = [true, false, true]; |
|
True/False
Indicate whether the
statement is true or false.
|
|
|
15.
|
The impetus, or trigger, that causes a message to be sent to an object must come
from another object.
|
|
|
16.
|
In TextPad, the Save button is enabled only when changes have been made to the
document.
|
|
|
17.
|
FlowLayout contains the following alignment constants that can be used as
arguments to its constructor: LEFT, CENTER, RIGHT, TOP, and BOTTOM.
|
|
|
18.
|
In Java, the length of an array is not a method, but a property provided for all
arrays.
|
|
|
19.
|
If several variables of the same data type are declared in a program, the data
type can be listed once followed by the variables separated by commas.
|
|
|
20.
|
The expression, !(a == a), evaluates to true.
|
|
|
21.
|
An applet is a small program that executes on a Web server.
|
|
|
22.
|
A class name cannot contain spaces and must not begin with a number.
|
|
|
23.
|
The if...else structure is an example of a repetition structure.
|
|
|
24.
|
Modules are not reusable.
|
Completion
Complete each
statement.
|
|
|
25.
|
The particular set of rules or grammar that specify how the instructions are to
be written is called the ____________________ of the language.
|
|
|
26.
|
A portion of a program that allows the programmer to specify that code will be
executed only if a condition is met is called a(n) ____________________.
|
|
|
27.
|
The ____________________, also know as the UML, is a language tool that provides
a standardized model for object-oriented design to depict or describe concepts graphically.
|
|
|
28.
|
The Java compiler converts the source code for a program into
____________________.
|
|
|
29.
|
Identifiers are used to name ____________________, which are locations in
computer memory that can change values as the code executes.
|
|
|
30.
|
The layout manager, ____________________, places components into one of five
geographical regions within the container.
|
|
|
31.
|
The ____________________ is associated with ActionEvent objects and can be used
to compare its return object with another component of the same type.
|
|
|
32.
|
The ____________________ assigns an image to a Frame's title bar
icon.
|
|
|
33.
|
When using a(n) ____________________ in the third parameter of a for loop, the
stop value in the second parameter must be less than the initial value in the first parameter in
order to avoid an infinite loop.
|
|
|
34.
|
The ____________________ in the java.lang package allow programmers to convert
Strings to a numeric data type.
|
|
|
35.
|
The operators <, >, <=, and >= are called
____________________.
|
|
|
36.
|
Each of the single-line if statements, block if statements, or if...else
statements may be ____________________, or completely included, within another if statement.
|
|
|
37.
|
The ____________________ takes three arguments, each of which is a number in the
range from 0 to 255 that corresponds to a specified red, green, and blue color.
|
|
|
38.
|
The result of a comparison operation is a(n) ____________________ data
type.
|
|
|
39.
|
A(n) ____________________ uses a graphical user interface (GUI) for user input
and program output with on-screen elements such as text boxes, buttons, menus, and toolbars to
support user interaction.
|
|
|
40.
|
A(n) ____________________, also called a bean, is a reusable software component
developed in Java, which can be used by any application that understands the same format.
|
|
|
41.
|
____________________ refers to the program's ability to deliver a result
quickly enough to be useful and in a space small enough to fit the environment.
|
|
|
42.
|
Unlike other comments in Java, ____________________ have no ending
symbol.
|
|
|
43.
|
The ____________________, or AWT, is a package included with the SDK to provide
programs access to color, draw methods, and other GUI elements.
|
|
|
44.
|
The operators == and != are called ____________________.
|
|
|
45.
|
A(n) ____________________ listens for events during the execution of an
interactive program.
|
|
|
46.
|
Each of the single-line if statements, block if statements, or if...else
statements may be ____________________, or completely included, within another if statement.
|
|
|
47.
|
The ____________________ component is used to construct an instance of a menu
bar.
|
|
|
48.
|
The ____________________ component adds a command to a previously declared Menu
component, thus resulting in a new command on the drop-down menu.
|
|
|
49.
|
The ActionListener interface requires a(n)
________________________method.
|
|
|
50.
|
The Toolkit class is the ________________________ of all actual
implementations
of the Abstract Window Toolkit.
|