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Exception Handling

 
Greenhorn
Posts: 11
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when i try to compile the code below.the error comes as:
Test3.java:14: exception java.io.IOException is never thrown in body of corresponding try statement.
Is it necessary that exception should be thrown in the try statement.
Thanks in advance


public class AQuestion
{
public static void main(String args[])
{
System.out.println("Before Try");
try
{
}
catch(java.io.IOException t)
{
System.out.println("Inside Catch");
}
System.out.println("At the End");
}
}
 
Bartender
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Is it necessary that exception should be thrown in the try statement.


Yes. The compiler will stop you trying to catch a checked exception that is not thrown from within the try block. So this:

will not compile. But this:

compiles fine.
 
anup sachan
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but below also we are not throwing amy checked exceptions .But the code compiles fine
 
Java Cowboy
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Originally posted by anup sachan:
but below also we are not throwing amy checked exceptions .But the code


Indeed. You are not throwing (or catching) any checked exceptions, so the code compiles fine. Did you expect anything else?

The compiler only does the check for checked exceptions, but ClassCastException is not a checked exception.
[ January 16, 2007: Message edited by: Jesper Young ]
 
anup sachan
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thanks i have got my doubt clarified.
 
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