psuresh1982

 Profile Answers by psuresh1982 

• Oct 25th, 2007

 

checked Exceptions must be dealt with in either a try/catch block or by declaring a "throws" in a method. Unchecked exceptions normally are Runtime exceptions like NullPointerException or ClassCastException.

A simple rule of thumb: If it's an exception you can possibly deal with (continue to run the program using some alternative code), use checked exceptions. For exceptions that should never happen (if they do, it's a bug), use unchecked (Runtime) exceptions which will come up to the surface and displayed to the user. Like this you assure that if there's a bug, it will show up eventually and can be fixed, and you don't run the risk of catching an exception and forgetting to deal with it (f.i.
empty catch block).

Also if you want more details then go through the following URL....

http://www.javapractices.com/Topic129.cjp

aneesm

 Profile Answers by aneesm Questions by aneesm

• Nov 16th, 2007

 

Unchecked exceptions are those exceptions that are not mentioned after throws clause.
Checked exceptions are those which are mentioned in the throws clause

sampra

 Profile Answers by sampra 

• Feb 14th, 2008

 

checked exp is complie time exception or caught excep eg aerithmatic exp
unchecked is runtim excption or uncaught excep  eg virtual memory

kiranmai.kasturi

 Profile Answers by kiranmai.kasturi 

• Jun 9th, 2008

 

checked exception is compile time exception which inherit "Exception" and unchecked exception is Rintime exception which is subclass of "RuntimeException"

muktasharad

 Profile Answers by muktasharad 

• Sep 5th, 2008

 

checked exceptions must be handeled.That is, a try-catch must either be nested around the call to the method that throws the exception.The compiler will throw an error message if it detects an uncaught exception and will not compile the file.

The run-time exceptions(unchecked exceptions) do not have to be caught. This avoids requiring that a try-catch be place around, for example, every integer division operation to catch a divide by zero or around every array variable to watch for indices going out of bounds.

You can use multiple catch clauses to catch the different kinds of exceptions that code can throw as shown in this snippet:

try   {     ... some code...   }   catch (ArrayIndexOutOfBoundException e)   {     ...   }   catch (IOException e)   {     ...   }   catch (Exception e)   {     ...   }   finally // optional   {     ...this code always executed even if        no exceptions...   }

 

inderjeet singh

• May 12th, 2012

 

Checked Exception represents the External Failure while Unchecked Exception represents the Internal failure.