Deck 1: Creating Java Programs

Question 1

Using the void keyword in the main() method header indicates that a value will be returned by the main() method is called.

Answer 1

False

Question 2

You must use the Java interpreter to translate the bytecode into executable statements before running a Java application.

Answer 2

True

Question 3

Logic errors are easily identified when a program is compiled.

Answer 3

False

Question 4

____ are pieces of information that are sent into, or passed to, a method, usually because the method requires the information to perform its task or carry out its purpose.

A) Applets
B) Methods
C) Arguments
D) Objects

Question 5

In Java, the reserved keyword ____ means that a method is accessible and usable even though no objects of the class exist.

A) active
B) undefined
C) static
D) void

Question 6

____ describes the feature of languages that allows the same word to be interpreted correctly in different situations based on the context.

A) Polymorphism
B) Architecturally neutral
C) Source code
D) Insulation

Question 7

A(n) ____ defines the circumstances under which a class can be accessed and the other classes that have the right to use a class.

A) identifier
B) access specifier
C) parameter
D) Pascal casing

Question 8

____ refers to the hiding of data and methods within an object.

A) Instance
B) Inheritance
C) Passed
D) Encapsulation

Question 9

System software is used for tasks such as word processing, calculations and playing games.

Question 10

A Java identifier can contain only letters, digits, ampersands, or number signs.

Question 11

A program written in ____ is the most basic circuitry-level language.

A) Java
B) machine language
C) BASIC
D) C

Question 12

If an object's methods are well written, the user is unaware of the low-level details of how the methods are executed, and the user must simply understand the interface or interaction between the method and the object.

Question 13

A compiler ignores whitespace (that is, any combination of nonprinting characters) between words and lines.

Question 14

Programs that are embedded in a Web page are called Java ____.

A) consoles
B) applets
C) applications
D) windowed applications

Question 15

Although not a requirement, it is Java standard that class identifiers begin with an uppercase letter and use other uppercase letters to improve readability.

Question 16

Line comments start with ____.

A) a forward slash and an asterisk
B) two forward slashes
C) a forward slash and two asterisks
D) a percent sign

Question 17

Dots (or periods) in a Java statement are used to separate the names of the components that make up the statement.

Question 18

Locating and repairing all syntax errors is part of the process of ____ a program.

A) interpreting
B) compiling
C) debugging
D) executing

Question 19

____ are also called modules, methods, functions, and subroutines. Java programmers most frequently use the term "method."

A) Procedures
B) Calls
C) Classes
D) Applications

Question 20

When you issue the command to compile a class containing errors, the Java compiler does not produce any error messages. You will first need to run the class in order to see error messages.

Question 21

Java contains a class named ____ that allows you to produce dialog boxes.

A) JBox
B) JOptionPane
C) JDialog
D) JGUI

Question 22

If a compiler detects a violation of language rules, it refuses to translate the class to ____.

A) an application
B) a logic error
C) machine code
D) Java

Question 23

In a ____ environment, you can change directories using the cd command. For example, to change to a directory named MyClasses, you type cd MyClasses and press Enter.

A) Windows
B) Java
C) graphical
D) DOS

Question 24

When you run a Java application using the ____ command, do not add the .class extension to the filename.

A) class
B) static
C) java
D) output

Question 25

____ is the process the compiler uses to divide your source code into meaningful portions; the message means that the compiler was in the process of analyzing the code when the end of the file was encountered prematurely.

A) Running
B) Debugging
C) Compiling
D) Parsing

Question 26

A(n) ____________________ error occurs when the syntax of the program is correct and the program compiles but produces incorrect results when you execute it.

Question 27

If you receive an error that states, "Exception in thread 'main' java.lang.NoClassDefFoundError," when you try to execute the application, you probably do not have your ____ set correctly.

A) class length
B) class path
C) java
D) object

Question 28

A ____ is an error not detected until the program asks the computer to do something wrong, or even illegal, while executing.

A) syntax error
B) run-time error
C) package
D) Java API

Question 29

You use an import statement when you want to access a built-in Java class that is contained in a group of classes called a(n) ____________________.

Question 30

It is a tradition among programmers that the first program you write in any language produces "____" as its output.

A) Hi, your name!
B) Hello, world!
C) My first program!
D) Hello, your name!

Question 31

{ public static void main(String[] args)
{
System.out.println("First Java application");
}
}
Given the above code, which item identifies the access specifier?

A) public
B) static
C) void
D) First

Question 32

____________________ comments are a special case of block comments that are used to generate documentation.

Question 33

The ____________________ is also called the Java class library; it contains information about how to use every prewritten Java class, including lists of all the methods you can use with the classes.

Question 34

In programming, named computer memory locations are called ____________________ because they hold values that might vary.

Question 35

Whenever a method requires multiple arguments, the arguments are always separated with ____.

A) commas
B) periods
C) forward slashes
D) brackets

Question 36

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
Allow you to assign intuitive names to areas of computer memory

Question 37

It is best to use the ____ available text editor when writing Java programs.

A) most complex
B) simplest
C) best
D) latest

Question 38

public class First {
Public static void main(String[] args)
{
System.out.println("First Java application");
}
}
Given the above code, which item identifies the name of the class?

A) public
B) static
C) void
D) First

Question 39

After a successful compile, you can run the class file on any computer that has a ____.

A) Java language interpreter
B) Web browser
C) text editor
D) DOS

Question 40

public class First {
Public static void main(String[] args)
{
System.out.println("First Java application");
}
}
Given the above code, which item identifies that the method will work without instantiating an object of the class?

A) public
B) static
C) void
D) println

Question 41

Why is it important for programmers to use program comments?

Question 42

What happens after a programmer successfully compiles a Java program named "First.java"?

Question 43

Provide examples of logic errors. How do programmers minimize logic errors in their code?

Question 44

Describe the components (objects and classes) that are used in the statement System.out.println().

Question 45

If you modify a class, what are the steps you must take to see your changes in the executing program?

Question 46

Why is creating a GUI environment for users a natural use for object orientation?

Question 47

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
Translates an entire program before carrying out the statement

Question 48

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
Series of characters that will appear in output exactly as entered

Question 49

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
A low-level programming language

Question 50

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
Any combination of nonprinting characters

Question 51

Identify why a class named first would be different from a class named FIRST. Explain why it is important to be aware of uppercase and lowercase values when writing Java programs?

Question 52

What are some of the reasons the javac command might not be recognized?

Question 53

Regarding code layout, what would be an equally valid and legal way to write the following Java code:
public static void main(String[] args)
{
System.out.println("First Java application");
}

Question 54

When you define a Java class using an identifier, what are the requirements you need to know?

Question 55

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
Hypothetical computer used to run a Java program

Question 56

Explain the purpose of arguments and why it is necessary to pass arguments to a method.

Question 57

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
The characteristics that define an object

Question 58

What are the two main types of Java programs?

Question 59

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
The rules for the programming language

Question 60

Match each term with the correct statement below.
a.literal string
f.compiler
b.high-level programming languages
g.attributes
c.dialog box
h.Machine language
d.syntax
i.Java virtual machine (JVM)
e.whitespace
A GUI object resembling a window in which you can place messages you want to display

Question 61

Write a line comment and block comment for the following line of code identifying the author, date, and purpose of the method.
System.out.println("Hello Students");

Question 62

Many help sources and documentation are available for Java programmers. List and describe three possible sources of Java documentation and sources that are available for use.

Question 63

public class FindMyErrors
{
public static void main(String[] args)
{
System.out.println("My application with errors)
}
Given the above code, identify three separate syntax errors.

Question 64

public class Hello
{
public static void main(String[] args)
{
_________________________
}
{
Using the given code, write the statement in the main() method body that will produce the output "Hello to all!".

Question 65

In Java, whitespace is optional but useful. Describe why and how whitespace can be used in coding?

Question 66

System.out.println("First Java application");
Given the above code, identify and describe the use of a literal string and the use of parentheses.

Question 67

Once an application is written and saved, the Java class must be compiled. Describe what two procedures must occur in order to view the output of the application.

Question 68

JOption.Pane.showMessageDialog(null, "Show my message");
The showMessageDialog() method above requires two arguments. What are the two arguments and what is the purpose of each argument?