Exam 14: Applets and More

Which of the following is NOT a restriction placed on applets?

In an applet, events are handled:

Which tag will produce largest text?

The browser creates an instance of the applet class automatically.

The delay parameter in the Timer constructor is the amount of time between action events, measured in microseconds.

If an applet attempts to violate one of the JVM restrictions:

The delay parameter in the Timer constructor is the amount of time between action events, measured in milliseconds.

________ is the language that Web pages are written in.

Look at the following applet code. 1 import javax.swing.*; 2 import java.awt.*; 3 public class GraphicsTest extends JApplet 4 { 5 public void init() 6 { 7 getContentPane().setBackground(Color.WHITE); 8 } 9 public void paint(Graphics g) 10 { 11 int[] xCoords = {20, 20, 60, 100, 140, 140, 100, 60}; 12 int[] ycoords = {20, 100, 140, 140, 100, 60, 20, 20}; 13 super.paint(g); 14 g.setColor(Color.YELLOW); 15 g.fillPolygon(xCoords, yCoords, 8); 16 g.setColor(color.BLACK); 17 g.setFont(new Font("SansSerif", Font.BOLD, 35)); 18 g.drawString("SLOW", 35, 95); 19 } 20 } What will be the coordinates of the third point of the polygon?

The play method will load and play a sound file once, then release it for garbage collection. The getAudioClip method will load the sound file and may assign the location of the sound file to a variable so it may be invoked many times.

In the following code, what does getDocumentBase()return? Play(getDocumentBase(), "mysound.wav");

Whenever you need a component of any type to be painted, call the paint method.

When the applet viewer opens an HTML document with more than one applet tag:

Look at the following applet code: 1 import javax.swing.*; 2 import java.awt.*; 3 public class GraphicsTest extends JApplet 4 { 5 public void init() 6 { 7 getContentPane().setBackground(Color.WHITE); 8 } 9 public void paint(Graphics g) 10 { 11 super.paint(g); 12 g.setColor(Color.YELLOW); 13 g.fillOval(100, 100, 50, 50); 14 g.setColor(Color.BLACK); 15 g.setFont(new Font("SansSerif", Font.BOLD, 35)); 16 g.drawString("SLOW", 110, 110); 17 } 18 } Which line sets the color that will be used to draw "SLOW"?

Given the following code, how many times per second will the TimerListener event be generated? Timer timer = new Timer(500, new TimerListener());

When you extend an interface, you must implement all the methods defined in the interface. If you are interested in only one or two mouse events, you can extend the ________ class which implements the MouseListener interface, but does not require you to write all the functions in the interface.

To support the Swing classes in applets, some browsers require a ________, which is software that extends or enhances another program.

Which of the following is NOT a valid AWT class?

In an HTML document, the tags:

The Applet class requires that you write a constructor to create an object of the class.