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Handle and Declare rule - Ducking exceptions

 
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How do I fix this code to compile it successfully using Handle and Declare rule in

Exceptions


 
Esther Kak
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This class has two methods.
1. One riskyMethod() that throws and exception
2. One duckingMethod() that calls the riskyMethod.

And now, in the main() method...I am calling the duckingMethod. I know we have to Handle and declare rule - how do I implement this rule in the above code
 
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avi sinha
 
avi sinha
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even a better idea : not just to get the code compiled



avi sinha
 
Esther Kak
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Thanks...now I understood the rule Handle & Declare
But in K&B exam watch (page 362) it says

When an object of a subtype of Exception is thrown, it must be handled
or declared.

So...does that mean it can be either handled or declared. How can I apply to my example below.

As said in K&B if I have a userdefined Exception class like this:


Suppose, I am throwing the userdefined Exception in the risky method - How do I handle? How do I declare.
 
avi sinha
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you have got two options here

1st one : handle the risky method invocation


2nd one eclare that the method (main here) which contains the risky method invocation throws the Exception



for every checked exception either you will have to declare it or handle it (to get compiled successfully)
and all user created exceptions are checked exceptions

avi sinha
 
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