Deck 1: Creating Java Programs

Question 1

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

Answer 1

C

Question 2

____ 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

Answer 2

A

Question 3

Logic errors are easily identified when a program is compiled.

Answer 3

False

Question 4

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

Question 5

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

Question 6

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

Question 7

____ 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 8

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

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

Question 9

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

Question 10

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

Question 11

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

Question 12

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

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

Question 13

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 14

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 15

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 16

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 17

____ 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 18

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

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

Question 19

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

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

Question 20

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 21

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

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

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

{    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 24

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 25

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 26

   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 27

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 28

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 29

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 30

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

Question 31

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 32

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 33

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

Question 34

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

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

Question 35

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 36

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

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

Question 37

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 38

   public class First    {
     public static void main(String[] args)
     {
        System.out.println("First Java application");
     }
   }
Given the above code, which item identifies the method's return type?

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

Question 39

____ 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 40

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 42

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

Question 43

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 44

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 45

Regarding code layout, write the following Java code using a common alternate placement of the first curly brace:
public static void main(String[] args)
{
System.out.println("First Java application");
}

Question 46

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

Question 47

Briefly describe the elements of the main() method:
public static void main(String[] args)
{
Java code...
}

Question 48

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

Question 49

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

Question 50

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 51

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 52

JOptionPane.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?

Question 53

Why is it important for programmers to use program comments?

Question 54

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

Question 55

What are the two main types of Java programs?

Question 56

Write a line comment and block comment for the following line of code identifying the author, date, and purpose of the method. In addition, explain the difference between comments that consist of a double-slash (//) and those that have a starting and ending slash asterisk (/* .. */).
System.out.println("Hello Students");

Question 57

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

Question 58

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 59

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

Question 60

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

Question 61

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