Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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A ____ is an AWT component that serves as an invisible container to further
refine the arrangement of components within another Container.
a. | Container | c. | Panel | b. | Frame | d. | Window |
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2.
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All of the following are assignment operators except ____.
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3.
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Consider the following for statement: for (int counter = 1; counter < 1;
counter --). How many times will the loop execute?
a. | 0 | c. | 2 | b. | 1 | d. | infinite number of
times |
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4.
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A(n) ____ is convenient when assigning values to two-dimensional arrays or when
keeping track of a table of numbers.
a. | add-and-assign operator | c. | nested loop | b. | control
array | d. | while
loop |
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5.
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The immediate superclass of a TextArea component is ____.
a. | TextContainer | c. | TextComponent | b. | Text | d. | TextField |
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6.
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The ____ method makes a menu item clickable.
a. | add() | c. | setActionCommand() | b. | addActionListener() | d. | setMenuBar() |
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7.
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The ____ is an object that implements the WindowListener interface.
a. | WindowAdapter | c. | WindowObject | b. | WindowEvent | d. | EventHandler |
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8.
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A ____ object resides in a buffer between the clipboard and the calling
application.
a. | Clipboard | c. | Transferable | b. | DataFlavor | d. | Toolkit |
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9.
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The ____ method returns the most recent value of the system clipboard provided
by the native platform.
a. | getDefaultToolkit() | c. | getSystemClipboard() | b. | getContents() | d. | getTransferData() |
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10.
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To represent a null string, type ____.
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True/False
Indicate whether the
statement is true or false.
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11.
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In Java, the length of an array is not a method, but a property provided for all
arrays.
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12.
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The third parameter of a for statement, the counter-control value, can be
incremented or decremented by any integer value.
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13.
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FlowLayout contains the following alignment constants that can be used as
arguments to its constructor: LEFT, CENTER, RIGHT, TOP, and BOTTOM.
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14.
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When adding containers to a Frame in its constructor method, the name of the
Frame object must be included in front of the add() method.
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15.
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The return data type of the getLabel() method is a Label object.
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Completion
Complete each
statement.
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16.
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When using a(n) ____________________ in the third parameter of a for loop, the
stop value in the second parameter must be less than the initial value in the first parameter in
order to avoid an infinite loop.
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17.
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Stand-alone windowed applications often are called ____________________.
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18.
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The layout manager, ____________________, places components into one of five
geographical regions within the container.
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19.
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Java supports a(n) ____________________ to create a String representation of
each primitive data type.
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20.
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A(n) ____________________ remains on the screen after the user releases the
mouse button.
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21.
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A container with added components is a(n) ____________________.
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22.
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The term, ____________________, refers to system dependent implementations of
components.
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23.
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The ____________________ is associated with ActionEvent objects and can be used
to compare its return object with another component of the same type.
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24.
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When using several Frames in an application, use the ____________________ to
decide exactly when or what event will make any given Frame visible.
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25.
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The ____________________ assigns an image to a Frame's title bar
icon.
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