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Java Programming : java.awt and java.io : Multiple Choice


Learn about java.awt and java.io packages.

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Multiple choice

Your Performance  

1.

Which of the following applet tags is legal to embed an applet class named Test into a Web page?

  < applet
code = Test.class width = 200 height = 100>

  < applet
code = Test.class width = 200 height = 100

  < applet>
code = Test.class width = 200 height = 100>

  < applet
param = Test.class width = 200 height = 100>

  < applet
class = Test width = 200 height = 100>

  Half-n-half Clue
 

2.

Which of the following statements are true?
(A) Unicode characters are all 16 bits.
(B) UTF characters are all 24 bits.
(C) Reader class has methods that can read integers and floats.
(D) File class may be used to rename a file.
(E) DataOutputStream objects are used to write primitive data to a file.

  (A) & (D)

  (A), (C), (D) & (E)

  (A), (D) & (E)

  (A), (B) & (D)

  (B), (D) & (E)

  Half-n-half Clue
 

3.

When we invoke repaint() for a java.awt.Component object, the AWT invokes the method:

  draw()

  show()

  paint()

  update()

  Half-n-half Clue
 

4.

Which of the following methods can be used to change the size of a java.awt.Component object?
(A) dimension()
(B) setSize()
(C) area()
(D) size()
(E) resize()

  (A), (B) & (E)

  (B), (D) & (E)

  (B) & (E)

  (D) & (E)

  (A), (B), (C) & (E)

  Half-n-half Clue
 

5.

The setBackground() method is part of the following class in java.awt package:

  Graphics

  Object

  Component

  Applet

  Container

  Half-n-half Clue
 

6.

What does the following line of code do?
Textfield text = new Textfield(10);

  Creates text object that can hold 10 rows of text.

  The code is illegal.

  Creates text object that can hold 10 columns of text.

  Creates the object text and initializes it with the value 10.

  Half-n-half Clue
 

7.

Which exception is thrown by the read() method of InputStream class?

  IOException

  ReadException

  None of these

  Exception

  FileNotFoundException

  Half-n-half Clue
 


 
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