True/False
Indicate whether the
statement is true or false.
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1.
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Unlike natural languages, programming languages do not have semantics.
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2.
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In an expression, the arithmetic operators for multiply and divide must not be
adjacent.
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3.
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Programming languages have large vocabularies and complex syntax compared to
natural languages.
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4.
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In a programming language, one must get the syntax absolutely correct.
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5.
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Java’s syntax for manipulating primitive data types differs from the
syntax for manipulating objects.
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6.
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Literals are restricted to the primitive data types and strings.
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7.
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A variable’s data type can change while a program is running.
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8.
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It is customary to write the names of constants in lowercase.
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9.
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The semantics of division are different for integer and floating-point
operands.
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10.
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Strings can be concatenated to numbers.
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11.
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An object can respond to a message even if its class does not implement a
corresponding method.
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12.
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It is common practice to precede major segments of code with brief comments that
explain their purpose.
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13.
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Programming environments are able to detect logic errors automatically.
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14.
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Incorrect output is the most obvious indication that there is a logic error in a
program.
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15.
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When a window opens, the JVM sends the message paintComponent to each object contained in the window.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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16.
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____ consists of the rules for combining words into
sentences.
a. | Vocabulary | c. | Syntax | b. | Semantics | d. | Logic |
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17.
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____ data types include numbers (both integer and floating-point),
characters, and Booleans.
a. | Primitive | c. | Complex | b. | Object | d. | Basic |
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18.
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Java includes ____ numeric data types.
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19.
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A variable of data type double uses ____ bytes of memory for storage.
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20.
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A variable declared with the keyword ____ will be a constant.
a. | const | c. | final | b. | static | d. | constant |
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21.
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An assignment statement has the form ____.
a. | <expression> = <variable>; | c. | <expression> ==
<variable>; | b. | <variable> =
<expression>; | d. | <variable> == <expression>; |
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22.
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____ have higher precedence than ____.
a. | Addition and subtraction; multiplication and division | b. | Subtraction and
division; addition and multiplication | c. | Multiplication and addition; subtraction and
division | d. | Multiplication and division; addition and subtraction |
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23.
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Which of the following operators has the highest precedence?
a. | addition | c. | multiplication | b. | unary minus | d. | assignment |
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24.
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Intermixing integers and floating-point numbers in an arithmetic expression is
referred to as ____ arithmetic.
a. | multitype | c. | mixed-mode | b. | mixed-type | d. | intertype |
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25.
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The escape sequence ____ indicates a newline character.
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26.
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Which of the following is a valid variable name?
a. | 3rdPayment | c. | pay.rate | b. | _$_$$$ | d. | final |
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27.
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Comments that appear between the symbols /* and */ are referred to as ____
comments.
a. | end of line | c. | javadoc | b. | multiline | d. | standard |
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28.
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____ errors occur when a program asks the computer to do something that it
considers illegal, such as dividing by 0.
a. | Logic | c. | Syntax | b. | System | d. | Run-time |
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29.
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Adding extra lines of code to a program that print the values of selected
variables in the terminal window in order to identify a logic error is an example of a(n) ____
technique.
a. | desk checking | c. | debugging | b. | compiling | d. | instantiating |
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30.
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In a screen coordinate system, the origin (0,0) is located at the ____ of a
window.
a. | center | c. | upper-right | b. | lower-left | d. | upper-left |
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Completion
Complete each
statement.
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31.
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____________________ is the set of all of the words and symbols in the
language.
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32.
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____________________ define the rules for interpreting the meaning of
statements.
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33.
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____________________ are items in a program whose values do not change.
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34.
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A(n) ____________________ is an item whose value can change during the execution
of a program.
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35.
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Before using a variable for the first time, the program must declare its type in
a(n) ____________________ statement.
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36.
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A(n) ____________________ consists of operands and operators combined in a
manner familiar from algebra.
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37.
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When evaluating an expression, Java applies operators of higher precedence
before those of lower precedence, unless overridden by ____________________.
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38.
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If a program tried to add 1 to the maximum integer value, it would result in a
condition known as ____________________.
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39.
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A technique called ____________________ allows one data type to be explicitly
converted to another.
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40.
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The string concatenation operator uses the ____________________ symbol.
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41.
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A method’s name and the types and number of its parameters are called the
method’s ____________________.
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42.
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Words that cannot be employed as user-defined symbols are called
____________________ because they have special meaning in Java.
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43.
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When using a package, a programmer ____________________ the desired class or
classes.
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44.
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The Scanner class’s ____________________ method
returns an entire line of input, including leading and trailing white space.
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45.
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____________________ are explanatory sentences inserted in a program in such a
manner that the compiler ignores them.
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46.
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____________________ errors (also called design errors or bugs) occur when a
programmer fails to express himself or herself accurately.
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47.
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When a program attempts to perform an illegal operation, the JVM will throw a(n)
____________________.
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48.
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Sending a message to a variable before the corresponding object has been
instantiated causes a(n) ____________________ exception.
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49.
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To provide a panel with additional capabilities, you can define a new type of
panel by ____________________ the JPanel class.
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50.
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Every panel maintains an instance of the
java.awt.Graphics class, known as the panel’s graphics ____________________.
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