Deck 3: Syntax, Errors, and Debugging

Question 1

The x and y coordinates of a point express its position relative to the system's origin.

Answer 1

True

Question 2

In Java, when integers and floating-point numbers are combined in a calculation, the integers are converted to doubles before the operation is performed.

Answer 2

True

Question 3

An object is an example of a primitive data type.

Answer 3

False

Question 4

An object can respond to a message only if its class implements a corresponding method. ____________________

Question 5

Objects support terminal input and output.

Question 6

FIGURE 3-2
The Java coordinate system is oriented as shown in Figure 3-2 above. ____________________

Question 7

Programming and natural languages share all of the following elements EXCEPT ____.

A) rigidity
B) vocabulary
C) syntax
D) semantics

Question 8

Natural languages are more rigid than programming languages.

Question 9

Which of the following is NOT an example of a primitive data type?

A) Strings
B) Numbers
C) Characters
D) Booleans

Question 10

Arithmetic operators are examples of Java syntax.

Question 11

____ define the rules for interpreting the meaning of statements.

A) Syntax
B) Rigidity
C) Logic
D) Semantics

Question 12

Explanations are sentences inserted into a program in such a manner that the compiler ignores them. ____________________

Question 13

Java uses a technique called mixed-mode to convert one data type to another in arithmetic expressions. ____________________

Question 14

FIGURE 3-1
The line in Figure 3-1 above was drawn using the ColorPanel class.

Question 15

Programming languages have smaller vocabularies and simpler syntax than natural languages.

Question 16

Strings can be combined in expressions with other strings or numbers using the concatenation operator.

Question 17

Which of the following is a difference between programming and natural languages?

A) semantics
B) literalness
C) exception
D) origin

Question 18

Syntax are the rules for combining words into statements.

Question 19

All of the following are examples of Java vocabulary EXCEPT ____.

A) =
B) *
C) (f - 32) * / 9
D) Fahrenheit

Question 20

An object must be instantiated before use. ____________________

Question 21

The paintComponent is triggered automatically by the ____ in response to certain events.

A) JVM
B) compiler
C) method
D) program

Question 22

A(n) ____________________ expression consists of operands and operators.

Question 23

Boolean, if, import, and return are all examples of ____.

A) user-defined symbols
B) reserved words
C) variables
D) signatures

Question 24

Programmers share code using a mechanism called a(n) ____________________.

Question 25

A ____ error occurs when the computer is instructed to divide by 0.

A) Syntax
B) Run-time
C) Logic
D) Semantic

Question 26

Text that appears between an opening /* and a closing */ is a(n) ____.

A) end-of-line comment
B) multiline comment
C) debugging statement
D) expression

Question 27

You can reduce the number of logic errors in a program by rereading code carefully, or ____.

A) proofreading
B) debugging
C) desk checking
D) keywording

Question 28

Numbers with decimals are the ____________________ numeric data type.

Question 29

Items in a program whose values do not change are called ____________________.

Question 30

____ errors are also called bugs.

A) Syntax
B) Run-time
C) Logic
D) Semantic

Question 31

Which of the following numeric data types is used for smaller, less precise floating-point numbers?

A) Double
B) Float
C) Short
D) Byte

Question 32

A ____ error occurs when a semicolon is missing at the end of a statement.

A) Syntax
B) Run-time
C) Logic
D) Semantic

Question 33

In an import statement, you can substitute a class or subsection name with the ____ character to indicate that all of the subsections in the package of classes in the subsection are to be imported.

A) \
B) ?
C) *
D) #

Question 34

Sending a message to a variable before the corresponding object has been instantiated causes a(n) ____ exception.

A) no such method
B) syntax
C) desk checking
D) null pointer

Question 35

The ____Panel class has all of the behavior of a JPanel, but it also knows how to draw specific shapes.

A) Color
B) Image
C) Shape
D) Draw

Question 36

Caroline uses the ____ character to include quotation marks in the welcome message.

A) escape
B) output
C) concatenation
D) forward slash

Question 37

To use a method successfully, you must know ____.

A) what type of value it returns
B) its name
C) the number and type of the parameters it expects
D) all of the above

Question 38

The ____ character is used to indicate that punctuation such as commas and quotation marks should be taken literally.

A) *
B) =
C) (
D) \

Question 39

The expression (3 + 5) + 2* 2 + 4 will yield ____ as the answer.

A) 16
B) 20
C) 24
D) 60

Question 40

Which of the following is NOT true about variables?

A) Their values can change during execution.
B) Before using a variable for the first time, the program must declare its type.
C) The type of data a variable contains can be changed.
D) All of the above are true.

Question 41

A(n) ____________________ is a computer program that can replicate itself and move from computer to computer.

Question 42

Identify the letter of the choice that best matches the phrase or definition.
a.Variable declaration statement
b.Keyword
c.5.301E5
d.(0, 0)
e.Method signature
The origin in a screen coordinate system.

Question 43

Identify the letter of the choice that best matches the phrase or definition.
a.Variable declaration statement
b.Keyword
c.5.301E5
d.(0, 0)
e.Method signature
A example of scientific notation.

Question 44

Identify the letter of the choice that best matches the phrase or definition.
a.Variable declaration statement
b.Keyword
c.5.301E5
d.(0, 0)
e.Method signature
A reserved word.

Question 45

Identify the letter of the choice that best matches the phrase or definition.
a.Variable declaration statement
b.Keyword
c.5.301E5
d.(0, 0)
e.Method signature
What a program must use before using a variable for the first time.

Question 46

Identify the letter of the choice that best matches the phrase or definition.
a.Variable declaration statement
b.Keyword
c.5.301E5
d.(0, 0)
e.Method signature
The name, type, and number of parameters.