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

  None of these

  ReadException

  Exception

  FileNotFoundException

  IOException

  Half-n-half Clue
 

2.

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

  Applet

  Object

  Component

  Container

  Graphics

  Half-n-half Clue
 

3.

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

  draw()

  paint()

  show()

  update()

  Half-n-half Clue
 

4.

If you want to assign a value of 99 to the variable year, then which of the following lines can be used within an tag?

  number = getParameter(99)

  < param number = 99 >

  < param = radius value = 99 >

  < param name = number value = 99 >

  < number = 99 >

  Half-n-half Clue
 

5.

Given file is a File object, which of the following are legal statements to create a new file?
(A) file.create();
(B) FileOutputStream fos = new FileOutputStream(file);
(C) FileWrter out = new FileWriter(file);
(D) FileInputStream fis = new FileInputStream(file);
(E) RandomAccessFile raf = new RandomAccessFile(file);

  (B), (D) & (E)

  (B), (C) & (D)

  (B), (C) & (E)

  (B) & (C)

  (A), (B), (D) & (E)

  Half-n-half Clue
 

6.

Which of the following methods can be used to draw the outline of a square within a java.awt.Component object?
(A) fillRect()
(B) drawLine()
(C) drawRect()
(D) drawString()
(E) drawPolygon()

  (A), (B) & (C)

  (B), (C) & (E)

  (B) & (C)

  (A), (B), (C) & (E)

  (C), (D) & (E)

  Half-n-half Clue
 

7.

Which of the following strings can be used as mode strings for creating a RandomAccessFile object?
(A) "r"
(B) "w"
(C) "rw"
(D) "wr"
(E) "0"

  (A), (B) & (C)

  (B), (D) & (E)

  (C) & (D)

  (A), (B), (C) & (E)

  (A) & (C)

  Half-n-half Clue
 


 
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