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Constructors of unimplemented Exceptions

Ranch Hand
Posts: 40
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Any unimplemented exceptions in this interface must all be created as member classes of the suncertify.db package. Each must have a zero argument constructor and a second constructor that takes a String that serves as the exception's description.

Does this mean that only two constructors (zero argument, and String) are allowed?
Starting JDK 1.4 there is a very useful feature of wrapping exceptions using the Exception(Throwable cause) constructor. Can we use (implement) this constructor as well?
author and jackaroo
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Hi Zafer,

That instruction tells you the minimum number and type of constructors that your Exceptions must implement. You are free to implement any additional constructors you like.

Regards, Andrew
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