Java quiz 09: How to handle exceptions?

  Quizzes     Assignments     Puzzles     Easy exercises     Required knowledge  
< Java Quizzes    Green = Easy,  Blue = Normal,  Red = Hard
Select    01   02   03   04   05   06   07   08   09   10   11   12   13   14   15 
 16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   By title 

As a programmer you need to realize what kind of exceptions might occur in your code.
By handling the exceptions, you would avoid problems for the users of your program.
In the following example, passing some parameters to the method myMethod could cause exceptions. Therefore it is necessary to handle the exceptions that might occur.

Java quiz 9: How to handle exceptions?

Level: Hard

What is written to the standard output as the result of executing the following code?

public class MyException
  int[] arrayInt = new int[8];
  int nr = 3;

  public void myMethod(int i, int i2)
      arrayInt[i] = i2;
      nr = i / i2;
    catch (ArithmeticException ae)
    catch (ArrayIndexOutOfBoundsException ae)
  public static void main(String[] args)
    MyException me = new MyException();
    me.myMethod(8, 0);
    me.myMethod(7, 0);
                                                                Author: Sar Maroof

Select the correct answer.

Answer explanation

  1. After creating the object me, the method myMethod(8, 0) is invoked. The parameter 8 is passed to the statement arrayInt[i] = i2; as follows: arrayInt[8] = 0.
    Since the eighth element of the array doesn’t exist, the exception ArrayIndexOutOfBoundsException is occured.
    Therefore the program writes “x” to the standard output.
  2. When the method myMethod(7, 0) is invoked, the statement nr = i / i2; divides 7 by zero. Dividing by zero causes ArithmeticException. Therefore, the program writes “t” to the standard output.
    So, this program writes xt to the standard output.

The correct answer is: f.

Sar Maroof is a professional software development teacher, gives master classes and publishes technical articles. He is also an expert software developer and worked for several big as well as small companies and later as a freelancer.

 Subscribe to Sar Maroof's RSS feeds!
 Mail this page to a friend!
 Bookmark this page!

Leave a Reply