Reference no: EM13271347

Question 1. 1. (TCO 4) What can you say about the following Java class definition?

public class MyApp extends JFrame implements ActionListener { ... } (Points : 6)
This class is illegal because it is using inheritance and implementing an interface at the same time.
MyApp is using inheritance to create a customized JFrame based application which handles ActionEvents.
This class will need to use an object of some other class which provides the actionPerformed method.
None of the above.








Question 2. 2. (TCO 5) Which of the following draws a rectangle whose center position is (400, 400) and whose length and height is 200? (Points : 6)
g.drawSquare(300, 300, 200, 200);
g.drawSquare(200, 200, 200, 200);
g.drawRectangle(200, 200, 200, 200);
g.drawRectangle(300, 300, 200, 200);








Question 3. 3. (TCO 5) The Graphics class in Java provides methods to (Points : 6)
draw lines between any two points.
draw text strings starting at any point.
draw shapes such as rectangles, ovals, etc.
All of the above.







Question 4. 4. (TCO 5) In order to draw an orange circle, you must first (Points : 6)
draw the circle and then set the color using circle.setColor(ORANGE);.
set the color on the graphics object by doing g.setColor(Color.ORANGE);.
set the circle color by doing circle.setColor(ORANGE);.
set the background color to Color.ORANGE and then draw the circle.







Question 5. 5. (TCO 5) In order to get an event associated with a mouse click and determine the position of the mouse cursor when the click happened, a Java program must (Points : 6)
implement the MouseMotionListener interface and use the MouseMotionEvent to get the position.
implement the MouseEventListener interface and use the getX and getY methods to get the position..
implement the MouseListener interface and use the MouseEvent object parameter to the mouseClicked method to get the position.
implement the MouseEvent interface and use the getX and getY methods to get the position.








Question 6. 6. (TCO 5) KeyEvents are generated whenever (Points : 6)
a key is pressed.
a key is released.
a key is typed.
All of the above.






Question 7. 7. (TCO 6) When an exception occurs, it is said to have been (Points : 6)
caught.
thrown.
declared.
handled.







Question 8. 8. (TCO 6) Which of the following statements is true? (Points : 6)
The code in a finally block is executed only if an exception occurs.
The code in a finally block is executed only if an exception does not occur.
The code in a finally block is executed only if there are no catch blocks.
The code in a finally block is executed if the try block it follows is entered.







Question 9. 9. (TCO 6) The purpose of the finally block is to (Points : 6)
catch an exception.
provide a place to put code that could fail.
release any resources acquired in the try block whether an exception occurs or not.
execute when an object is no longer needed.







Question 10. 10. (TCO 7) What does the following Java statement do?

FileOutputStream stream = new FileOutputStream("myfile.txt"); (Points : 6)
Creates an output stream for reading Unicode characters from a file.
Creates an output stream for writing Unicode characters to a file
Creates an output stream for reading bytes from a file.
Creates an output stream for writing bytes to a file.








Question 11. 11. (TCO 7) What can you do with the following object?

DataOutputStream stream = new DataOutputStream(new FileOutputStream("myfile.txt")); (Points : 6)
Read and write values of any primitive data type.
Read objects from the file.
Read values of any primitive data type from the file.
Write values of any primitive data type to the file.






Question 12. 12. (TCO 7) Which of the following classes enable input and output of entire objects to or from a file? (Points : 6)
SerializedInputStream and SerializedOutputStream
SerializedIOStream
ObjectInputStream and ObjectOutputStream
ObjectIOStream

Question 13. 13. (TCO 8) Which of the following is commonly found in a class level Javadoc comment? (Points : 6)
The @author tag.
The @version tag.
The start of paragraph marker <p>.
All of the above.

Question 14. 14. (TCO 8) The @see tag is used to (Points : 6)
create a link to additional documentation explaining the purpose of the method being documented.
create a link from one class to another class.
identify who is responsible for writing and maintaining the class.
None of the above.

Question 15. 15. (TCO 8) If a Java archive file is executable, it is executed by issuing which command? (Points : 6)
jar -exe archiveName.jar
java -jar archiveName.jar
javac archiveName.jar
None of the above.