Question 1

Given the statement:   System.out.println("First Java application"); out refers to ____.

Accepted Answer

The keyword "out" in the statement "System.out.println" refers to the standard output device, which is typically the console or terminal where the program is being run. Therefore, option B is the correct answer. Option A may seem like a possible choice since the output may appear on the screen, but it is not specific enough. Options C and D are incorrect since they do not relate to the output device used in this statement.

Question 2

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

Accepted Answer

Locating and repairing syntax errors is part of the process of debugging a program. Interpreting refers to the process of executing a program line by line at runtime. Compiling refers to the process of converting source code into machine code. Executing refers to the process of running a compiled program. While all of these steps might be involved in the overall program development process, only debugging specifically involves locating and fixing syntax errors.

Question 3

____ 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.

Accepted Answer

Arguments are pieces of information that are passed to a method to perform its task or carry out its purpose. Applets and Objects are not related to this concept. Methods refer to the code block that performs a certain task, but they can also receive arguments.

Question 4

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

Accepted Answer

The reserved keyword "static" in Java means that a method belongs to the class itself, rather than to any specific instance of the class. This allows the method to be accessed and used without creating an object of the class.

Question 5

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.

Accepted Answer

When you compile a class containing errors, the Java compiler will produce error messages indicating the location and nature of the errors. The class cannot be run until it is successfully compiled without errors.

Question 6

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

Accepted Answer

A Java identifier can contain letters, digits, dollar signs, or underscores, but not ampersands or number signs.

Question 7

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

Accepted Answer

Dots in Java are used to separate the names of components such as class, method, and variable names in a statement.

Question 8

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.

Accepted Answer

If an object's methods are well written, the user should not need to know about the low-level details of how the methods are executed. The user can simply interact with the object through its interface, which defines how the methods can be called and what their expected results are. This abstraction simplifies the user's experience and makes the object easier to use.

Question 9

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

Accepted Answer

System software is responsible for controlling and managing the hardware and software components of a computer system. Applications such as word processing, calculations, and games are examples of application software.

Question 10

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

Accepted Answer

Access specifiers provide control over access to the class and its members. They define the level of accessibility of a class and its members for other classes present in the program. Access specifiers are of three types- public, private, and protected. These access specifiers explicitly specify the scope of the class or its members for accessing the same outside the class.

Question 11

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

Accepted Answer

Using the void keyword in the main() method header indicates that no value will be returned by the main() method when it is called.

Question 12

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

Accepted Answer

This statement is true. A compiler only looks at the actual code and does not pay attention to any whitespace like spaces, tabs, or newlines.

Question 13

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

Accepted Answer

This is a Java standard convention.

Question 14

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

Accepted Answer

Polymorphism refers to the ability of a programming language to interpret the same code differently in different contexts. This feature is particularly useful for improving the readability and flexibility of code. However, none of the other options (architecturally neutral, source code, insulation) have anything to do with this specific concept.

Question 15

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

Accepted Answer

Java bytecode cannot be directly executed by the computer, it must be interpreted by the Java interpreter to produce executable statements.

Question 16

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

Accepted Answer

Encapsulation refers to the practice of hiding the implementation details of an object from the outside world and instead exposing only a public interface through which the object can be interacted with. This is done in order to ensure that the internal state of the object remains consistent and to prevent any unintended modification by external entities.

Question 17

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

Accepted Answer

Machine language is the most basic circuitry-level language because it consists of instructions written in binary code that can be directly executed by a computer's CPU. Java, BASIC, and C are higher-level programming languages that require compilers or interpreters to be translated into machine language.

Question 18

Logic errors are easily identified when a program is compiled.

Accepted Answer

Logic errors, also known as semantic errors, are not caught by the compiler because the code is technically correct, but the intended logic is flawed. These errors often result in unexpected program behavior or incorrect output.

Question 19

Line comments start with ____.

Accepted Answer

Line comments in most programming languages start with two forward slashes. Other symbols may be used for line comments in specific languages, but the most common one is // for single-line comments.

Question 20

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

Accepted Answer

Procedures are also called modules, methods, functions, and subroutines. Java programmers most frequently use the term "method." Therefore, the best choice is A) Procedures.

Quiz 1: Creating Your First Java Classes

Given the statement: System.out.println("First Java application") ; out refers to ____.