Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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A declaration statement can do all the following tasks except
____.
a. | assign an initial value to the variable when declaring a variable | b. | call a constructor
to declare an instance of a class when declaring a variable | c. | declare a data type
and name an identifier | d. | declare multiple variables with different data
types. |
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2.
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Which of the following obeys the order of operator precedence rules for
arithmetic operators (from highest to lowest)?
a. | * , %, + | c. | *, +, % | b. | %, - , / | d. | +, /, % |
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3.
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Which of the following is not a comparison operator?
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4.
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Which of the following is an equality operator?
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5.
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The ____ method assigns a caption or String to an object.
a. | add() | c. | setForeground() | b. | println() | d. | setText() |
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6.
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When a call statement is encountered, the Java compiler looks for a matching
method in all of the following places except ____.
a. | in the application itself | c. | the imported
packages | b. | an external class | d. | the Java SDK |
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7.
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The ____ statement is an example of a selection structure.
a. | catch | c. | try | b. | if...else | d. | while |
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8.
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Which of the following is a valid condition for an if statement? Assume the
variable "done" is a boolean.
a. | (done=true) | c. | (done == "false") | b. | ((done == false) ||
(done == true)) | d. | (done ==
false && done) |
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9.
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Which of the following is the logical NOT operator?
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10.
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Which of the following is not a requirement for method arguments and
their respective parameters?
a. | An argument and its respective parameter must have the same identifier
name. | b. | There must be the same number of arguments as parameters. | c. | The arguments must
be in the same order as the parameters. | d. | Each argument must be of the same data type as
its respective parameter. |
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11.
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Which of the following is not a reference type in Java?
a. | array | c. | float | b. | Date | d. | String |
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12.
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Pressing ____ when a window is active saves an image of the current screen to
the Windows Clipboard.
a. | alt+ctrl | c. | alt+print screen | b. | alt+insert | d. | alt+shift |
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13.
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Which of the following is not a requirement of user-defined
methods?
a. | they must be called from other code | c. | they must contain a method
header | b. | they must contain a set of braces | d. | they must reside inside a
class |
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14.
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The ____ statement identifies a block of statements that potentially may throw
an exception.
a. | catch | c. | throw | b. | finally | d. | try |
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15.
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The ____ method is triggered when a user clicks an option button in a
CheckboxGroup.
a. | addItemListener() | c. | itemStateChanged() | b. | getState() | d. | setState() |
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True/False
Indicate whether the
statement is true or false.
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16.
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Java allows the programmer to declare a variable as one data type and then later
insert another data type into that variable location.
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17.
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If several variables of the same data type are declared in a program, the data
type can be listed once followed by the variables separated by commas.
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18.
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Java cannot compile and execute a program successfully if the program has no
code inside the main() method.
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19.
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In a method call, parentheses must be included after the method name even if the
method sends no arguments.
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20.
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The expression, !(a == a), evaluates to true.
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21.
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The assignment operator in Java also can be used to represent equality.
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22.
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When applets use components to display text boxes, the last text box added to
the applet has the focus.
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23.
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Return value identifiers must be declared in the body of the method.
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24.
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A method's return value and its resulting storage location, if any, must
have the same data type and identifier name.
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25.
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Applets use the System.exit() method to terminate the program.
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