try/catch/finally

[Irfan Khan]

What all gets printed when the following gets compiled and run. Select all correct answers.

public class test {
public static void main(String args[]) {
int i=1, j=1;
try {
i++;
j--;
if(i/j > 1)
i++;
}
catch(ArithemticException e)
{
System.out.println(0);
}
catch(ArrayIndexOutOfBoundsException e)
{
System.out.println(1);
}
catch(Exception e)
{
System.out.println(2);
}
finally {
System.out.println(3);
}
System.out.println(4);
}
}


A.0
B.1
C.2
D.3
E.4

[deekasha gunwant]

Hi Irfan,

The o/p will be 0,3,4.
Reason---
if(i/j>1) throws ArithmeticException that is caught by
catch(ArithmeticException ae) -----> prints 0
finally block gets executed -----> prints 3
control continues after finally ----> prints 4
The points that gets clear from ur code is
1-> finally block gets executed in every case i.e. Exception or no exception .
2-> after finally / catch block the program continues through the next block of statements.

regards
deekasha

[Anonymous]

Deekasha is right.
But Irfan, what are you trying to prove here?
Good Luck
Ambrose

[Anonymous]

Deeksha,
I think you are a little bit wrong.
After finally gets executed, the flow goes back to the calling method which calls the present method( not the next block of statements).
I agree that your o/p is correct.

[deekasha gunwant]

Hi danny,
if u agree with my answers then u should agree that after executing finally block the control moves to next block of statement (if present).otherwise how would 4 get printed.
in case there is nothing written in the function after the finally block then certainly the control will get transferred to the caller function.
now do u agree with me ........
deekasha

[Thomas Paul]

Deekasha is correct. The try/catch is used to catch an exception and process it so that program flow can continue.

[charu]

What error will it give if there is no catch for a try but there is a finally?

[This message has been edited by charu (edited October 17, 2000).]
[This message has been edited by charu (edited October 17, 2000).]

[Pichai Bala]

Hi Charu,
The finally block will get executed wether or not
the exception is thrown or handled. The only time the finally will not get executed is when you invoke the System.exit(); On all other times finally will be called.
Pichai

[deekasha gunwant]

Hi,
try block must be at least followed by either a catch block or a finally block.or both may be there.
so in case there is no catch after try block but still finally block is there then it's okay with the compiler.
in case there are both catch and finally blocks then finally block shall be the last.
regards
deekasha

[Richard Mack]

I'm not sure if it was clearly stated above. However, the last line of code was only executed because the exception was caught`.
Had the exception not been handled, the finally block would have been executed, execution of the mothod would have ceased, and the exception would have been thrown to the calling method (assuming this method could throw this exception).

[Richard Mack]

In regards to previous...
Since this a main method, execution of the program would have halted.