Finally

[Vivek Shrivastava]

Hi,
Here i have some confusion about sequence of output. is it not supposed to first handle the Exception thrown in catch block then execute finally block??
please explain it to me.

   import java.io.*; 
   import java.net.*; 
   public class Base{ 
     private void test() throws IOException { 
       String a = null; 
       String b = "b"; 
       try { 
                // Complex processing 
                if(a==null) 
                    throw new MalformedURLException("test"); 
                if(b ==null) 
                    throw new EOFException("test"); 
                // Complex processing 
           } 
           catch (MalformedURLException e) { 
              System.out.println("CaughtMalformedURLException"); 
               throw e; 
           } 
           catch (EOFException e)  { 
               System.out.println("Caught EOFException"); 
               throw e; 
           } 
           finally { 
                   System.out.println("End finally "); 
           } 
           System.out.println("End processing"); 
    } 
    static public void main(String[] a) { 
       try { 
           new Base().test(); 
       } 
       catch (Exception e) { 
         System.out.println("Exception at main()");
       } 
     } 
   } 

Output:
CaughtMalformedURLException
End finally
Exception at main()
regards
vivek

[This message has been edited by Vivek Shrivastava (edited August 08, 2000).]

[Anonymous]

Hi Vivek
The reason why you get the following is as follows.
Once the code a==null is successfull, the MalformedURLException is thrown. This exception is caught in the same test() method which prints CaughtMalformedURLException and again throws the same execption.
But before control is transferred to the main, finally() is executed, so it prints
End finally.
Then this exception is caught in the main() method which prints
Exception at main().
Hope this clarifies
Anand

[chetan nain]

dear vivek,
note that MalformedURLexception is a checked exception.
1. this means that this exception must either be caught using the try-catch construct, or , be declared in the throws clause of the invoking method.
2. in your code, this exception is caught using the first catch construct. it is then RETHROWN.
3. since it is checked exception, it has to be declared in the throws clause of invoking method ie test(). note that this is not done. the test() method only throws one IOException.
3. thus, after execution of finally, method is aborted and hence result
hth, chetan