TEST BANK
JAVA SOFTWARE SOLUTIONS: FOUNDATIONS OF PROGRAM DESIGN
10TH EDITION
CHAPTER NO. 01: INTRODUCTION
TRUE/FALSE
1. All information is stored in the computer using binary numbers.
ANS: T
The computer is a digital device meaning that it stores information in one of two states using
binary. We must determine then how to represent meaningful information (such as a name or
a program instruction or an image) in binary.
2. Java is an object-oriented programming language.
ANS: T
Java is classified as a high-level programming language but it is also classified as an object-
oriented programming language because it allows the programmer to implement data
structures as classes.
3. System.out.print is used in a program to denote that a documentation comment
follows.
ANS: F
Documentation comments follow // marks or are embedded between */ and */.
System.out.print is an instruction used to output a message to the screen (the Java
console window).
4. Java byte codes are directly executable whereas Java source code is not.
ANS: F
Neither Java source code nor Java byte codes are executable. Both must be compiled or
interpreted into machine code. Java byte codes are useful however in that they are machine-
independent but semi-compiled code that allows your Java code to be transmitted over the
Internet and executed on another computer even if that other computer is a completely
different type.
5. The Java compiler is able to find all programmer errors.
, ANS: F
The Java compiler can find syntax errors but cannot find either logical errors (errors that are
caused because of poor logic in writing the program) or run-time errors (errors that arise
during the execution of the program).
6. Java is a case-sensitive language which means Current, CURRENT, and current will all
reference the same identifier.
ANS: F
Java is case sensitive which means that Current, CURRENT, and current will all be
recognized as different identifiers. This causes problems with careless programmers who do
not spell an identifier consistently in terms of upper and lower case characters.
7. Code placed inside of comments will not be compiled and, therefore, will not execute.
ANS: T
The compiler discards comments; therefore, any code inside a comment is discarded and is
not compiled. Your executable program consists only of the code that is compiled.
8. The word Public is a reserved word.
ANS: F
public is a reserved word, but since Java is case sensitive, Public differs from public
and therefore Public is not a reserved word.
9. Reserved words in Java can be redefined by the programmer to mean something other than
their original intentions.
ANS: F
Java reserved words cannot be redefined.
10. In a Java program, dividing by zero is a syntax error.
ANS: F
Dividing by 0 is not detected at compile time, and because a computer cannot divide by 0, this
is a run-time error.
11. In a Java program, dividing by zero is a syntax error.
, ANS: F
Dividing by 0 is not detected at compile time, and because a computer cannot divide by 0, this
is a run-time error.
12. During translation, the compiler puts its output (the compiled Java program) into ROM.
ANS: F
ROM stands for read-only-memory. The compiled output (the byte codes) may be placed
into RAM (writable random access memory) or into a file (on your hard drive, for example).
13. Objects are defined by a class that describes the characteristics common to all instances of the
class.
ANS: T
An object is an instance of a class. And, the purpose of a class is to describe these common
characteristics.
14. Inheritance is a form of software reuse.
ANS: T
Inheritance allows us to capitalize on the similarities among various kinds of classes that have
a common base (parent) class. Thus we reuse the base class each time a class inherits from it.
15. Polymorphism is the idea that we can refer to multiple types of related objects in consistent
ways.
ANS: T
Polymorphism allows us to use the same name for similar behaviors that occur among diverse
and possibly unrelated objects. For example, to "open" may refer to a file, or to a device, or
to a communications line, etc. The same term, "open," is being used even though the objects
that are being opened are quite different.
16. In Java, identifiers may be of any length up to a limit determined by the compiler.
ANS: F
Java (and Java compilers) do not limit the length of the identifiers you use. Identifiers may
be as long as you wish. Good programming practice, however, will limit the lengths of the
identifiers you create.
MULTIPLE CHOICE
, 1. A Java program is best classified as
a. hardware
b. software
c. storage
d. processor
e. input
ANS: B
Programs are classified as software to differentiate them from the mechanisms of the
computer (hardware). Storage and the processor are two forms of hardware while input is the
information that the program processes.
2. Six bits can be used to represent __________ distinct items or values.
a. 6
b. 20
c. 24
d. 32
e. 64
ANS: E
With n bits, we can represent 2^n different values. 2^6 = 64.
3. When executing a program, the processor reads each program instruction from
a. secondary memory (storage)
b. the Internet
c. registers stored in the processor
d. main memory
e. Any of these
ANS: D
The program is first loaded from secondary memory into main memory before it is executed
so that the processor is not slowed down by reading each instruction. This idea of executing
programs stored in memory is called the Stored Program Computer and was pioneered by
John Von Neumann in the 1940s.
JAVA SOFTWARE SOLUTIONS: FOUNDATIONS OF PROGRAM DESIGN
10TH EDITION
CHAPTER NO. 01: INTRODUCTION
TRUE/FALSE
1. All information is stored in the computer using binary numbers.
ANS: T
The computer is a digital device meaning that it stores information in one of two states using
binary. We must determine then how to represent meaningful information (such as a name or
a program instruction or an image) in binary.
2. Java is an object-oriented programming language.
ANS: T
Java is classified as a high-level programming language but it is also classified as an object-
oriented programming language because it allows the programmer to implement data
structures as classes.
3. System.out.print is used in a program to denote that a documentation comment
follows.
ANS: F
Documentation comments follow // marks or are embedded between */ and */.
System.out.print is an instruction used to output a message to the screen (the Java
console window).
4. Java byte codes are directly executable whereas Java source code is not.
ANS: F
Neither Java source code nor Java byte codes are executable. Both must be compiled or
interpreted into machine code. Java byte codes are useful however in that they are machine-
independent but semi-compiled code that allows your Java code to be transmitted over the
Internet and executed on another computer even if that other computer is a completely
different type.
5. The Java compiler is able to find all programmer errors.
, ANS: F
The Java compiler can find syntax errors but cannot find either logical errors (errors that are
caused because of poor logic in writing the program) or run-time errors (errors that arise
during the execution of the program).
6. Java is a case-sensitive language which means Current, CURRENT, and current will all
reference the same identifier.
ANS: F
Java is case sensitive which means that Current, CURRENT, and current will all be
recognized as different identifiers. This causes problems with careless programmers who do
not spell an identifier consistently in terms of upper and lower case characters.
7. Code placed inside of comments will not be compiled and, therefore, will not execute.
ANS: T
The compiler discards comments; therefore, any code inside a comment is discarded and is
not compiled. Your executable program consists only of the code that is compiled.
8. The word Public is a reserved word.
ANS: F
public is a reserved word, but since Java is case sensitive, Public differs from public
and therefore Public is not a reserved word.
9. Reserved words in Java can be redefined by the programmer to mean something other than
their original intentions.
ANS: F
Java reserved words cannot be redefined.
10. In a Java program, dividing by zero is a syntax error.
ANS: F
Dividing by 0 is not detected at compile time, and because a computer cannot divide by 0, this
is a run-time error.
11. In a Java program, dividing by zero is a syntax error.
, ANS: F
Dividing by 0 is not detected at compile time, and because a computer cannot divide by 0, this
is a run-time error.
12. During translation, the compiler puts its output (the compiled Java program) into ROM.
ANS: F
ROM stands for read-only-memory. The compiled output (the byte codes) may be placed
into RAM (writable random access memory) or into a file (on your hard drive, for example).
13. Objects are defined by a class that describes the characteristics common to all instances of the
class.
ANS: T
An object is an instance of a class. And, the purpose of a class is to describe these common
characteristics.
14. Inheritance is a form of software reuse.
ANS: T
Inheritance allows us to capitalize on the similarities among various kinds of classes that have
a common base (parent) class. Thus we reuse the base class each time a class inherits from it.
15. Polymorphism is the idea that we can refer to multiple types of related objects in consistent
ways.
ANS: T
Polymorphism allows us to use the same name for similar behaviors that occur among diverse
and possibly unrelated objects. For example, to "open" may refer to a file, or to a device, or
to a communications line, etc. The same term, "open," is being used even though the objects
that are being opened are quite different.
16. In Java, identifiers may be of any length up to a limit determined by the compiler.
ANS: F
Java (and Java compilers) do not limit the length of the identifiers you use. Identifiers may
be as long as you wish. Good programming practice, however, will limit the lengths of the
identifiers you create.
MULTIPLE CHOICE
, 1. A Java program is best classified as
a. hardware
b. software
c. storage
d. processor
e. input
ANS: B
Programs are classified as software to differentiate them from the mechanisms of the
computer (hardware). Storage and the processor are two forms of hardware while input is the
information that the program processes.
2. Six bits can be used to represent __________ distinct items or values.
a. 6
b. 20
c. 24
d. 32
e. 64
ANS: E
With n bits, we can represent 2^n different values. 2^6 = 64.
3. When executing a program, the processor reads each program instruction from
a. secondary memory (storage)
b. the Internet
c. registers stored in the processor
d. main memory
e. Any of these
ANS: D
The program is first loaded from secondary memory into main memory before it is executed
so that the processor is not slowed down by reading each instruction. This idea of executing
programs stored in memory is called the Stored Program Computer and was pioneered by
John Von Neumann in the 1940s.
