Core Java - Exception Handling

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Core Java | Question 474 of 492

Exception Handling

What is the output of the following program, When tested under JDK 5.0

class ExceptionDemo
{
public static void main(String[] args)
{
int a[] = new int[] {1,2,3,4,5};
try{
System.out.prinltln(a[6]);
} catch(Exception e) {
System.out.println("Catching Exception ...");
} catch(ArrayIndexOutofBoundsException ae) {
System.out.println("Catching ArrayIndexOutOfBounds Exception ...");
}
}
}

Total Answers and Comments: 11

Last Update: July 16, 2008 Asked by: khadarzone

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Best Rated Answer

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Submitted by: jrcheenu

while writing catch the inheritance hierarchy should be followed. The child class of exception should be caought before parent.

Above answer was rated as good by the following members:
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April 15, 2008 04:15:30

abuthahir.d

Member Since: January 2008 Contribution: 10

RE: Exception Handling

This will throw a compilation error .

I dont like to give the reason . check in any java books for exceptions. this is one of the basic rules for catching exceptions

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Overall Rating: -3

April 15, 2008 06:37:32

hemanth_1386

Member Since: April 2008 Contribution: 3

RE: Exception Handling

It doesn't give any compilation error.. it compiles successfully..
It throws ArrayIndexOutOfBoundException and it is caught by catch (Exception e) as it matches all the exceptions.

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April 15, 2008 08:43:23

abuthahir.d

Member Since: January 2008 Contribution: 10

RE: Exception Handling

Exception in thread "main" java.lang.Error: Unresolved compilation problem:

Unreachable catch block for ArrayIndexOutOfBoundsException. It is already handled by the catch block for Exception

this the error i got

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April 15, 2008 13:23:05

hemanth_1386

Member Since: April 2008 Contribution: 3

RE: Exception Handling

yes ur correct...

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April 15, 2008 15:38:03

charkat

Member Since: April 2008 Contribution: 1

RE: Exception Handling

it wont compile...in catch statement..we need to define catch for specific exception and then and then we need to give catch for general statement

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April 23, 2008 18:19:45

jrcheenu

Member Since: April 2008 Contribution: 5

RE: Exception Handling

while writing catch the inheritance hierarchy should be followed. The child class of exception should be caought before parent.

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1 0

Overall Rating: +1

June 08, 2008 07:02:04

ramesh124

Member Since: June 2008 Contribution: 2

RE: Exception Handling

It will not compile
The ERror because of
the catching exceptions should start from child Class of Exceptions and from there it can go to parent class.
If the catch blocks hierarchy is changed, it will compile successfully.

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June 19, 2008 23:40:54

manu.raj2007

Member Since: June 2008 Contribution: 1

RE: Exception Handling

This code results in a compilation error because ArrayIndexOutOfBoundsException has already been caught by its base class Exception.

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June 28, 2008 02:31:59

r.praveenkumar

Member Since: October 2007 Contribution: 24

RE: Exception Handling

This will throw a compiler error while catching exceptions we should first catch child class exceptions and then only base class. The reason is if we follow this we will get the more specific reason for the failure ie what caused the exception to rise.

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June 29, 2008 12:33:49

#10

rinumca

Member Since: June 2008 Contribution: 7

RE: Exception Handling

Here the child exception is caught before parent. In your program there are two compilation errors they are println is typed wrong and ArrayIndexOutOfBoundsException is also typed worng which result in compilation errors

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