35

Any of the file input or output methods in a Java program might throw an exception, so all the relevant code in the class is placed in a ____ block.

finally

throw

try

catch

36

You specify 2D colors by using the ____ method.

paint()

setPaint()

color()

setColor()

37

Which JFrame JFrame method is used to display the frame?

Display().

Load().

setVisible(true)

show(true)

38

The method __________ sets the font (Helvetica, 20-point bold) in component C.

c.setFont(new Font("Helvetica", Font.bold, 20))

c.setFont(new Font("helvetica", BOLD, 20))

c.setFont(Font("Helvetica", Font.BOLD, 20))

c.setFont(new Font("Helvetica", Font.BOLD, 20))

39

Usually, the subclass constructor only needs to initialize the ____ that are specific to the subclass.

objects

data fields

methods

constructors

40

If graph holds a Graphics object, which of the following puts "CAT" starting at X = 20, Y = 50?

drawString("CAT", 20, 50);

graph.drawString(20, 50, "CAT");

graph.println("CAT");

graph.drawString("CAT", 20, 50);

41

The keyword ____ indicates that a field value is unalterable.

end

final

permanent

static

42

You define the text to be displayed in a tool tip by using the setToolTipText() method and passing an appropriate ____ to it.

Integer

Date

String

Boolean

43

Which of the following most completely describes the steps for setting up event handling for a GUI component?

Create a class that represents the event handler, attach the JFrame to a JWindow object and register the event handler.

Implement an appropriate event-listener interface and register the event handler.

Create a class that represents the event handler and implement an appropriate event-listener interface.

Create a class that represents the event handler, implement an appropriate event-listener interface and register the event handler.

44

Suppose that the class Mystery is derived from the class Secret. Consider the following statements. Secret secRef = new Secret(); Mystery mysRef = new Mystery(); Which of the following statements is legal in Java? (i) secRef = mysRef; (ii) mysRef = secRef;

Only (i)

Only (ii)

Both (i) and (ii)

None of these

45

Which class do you use to read data from a text file?

File

Formatter

Scanner

Input

46

Which method is used to register a listener object to a button object?

addActionListener

registerButton

eventButton

buttonListener

47

When using the drawRoundRect() method, if you assign ____ to the arc coordinates, the rectangle is not rounded; instead, the corners are square.

-1

0

10

99

48

What happens in a method if there is an exception thrown in a try block but there is no catch block following the try block?

The program ignores the exception.

The program will not compile without a complete try/catch structure.

The program terminates immediately.

The program throws an exception and proceeds to execute the finally block.

49

Which method contains the code that the program executes when a specific event is generated?

buttonListener

GUIListener

actionPerformed

windowListener

50

Given a Graphics object g, to draw an circle with radius 20 centered at (50, 50), you use __________.

g.drawOval(50, 50, 20, 20)

g.drawOval(50, 50, 40, 40)

g.drawOval(30, 30, 20, 20)

g.drawOval(30, 30, 40, 40)