Enthuware

I was thrown by the fact that main() is declared as throwing an Exception, yet the Data class wasn't throwing any. I was expecting a compiler error as a result.

A method can be defined to throw any exception even though the code inside it does not throw that exception.
HTH,
Paul.

I just had a doubt with the answer.
how the output is 10Y 0Z ?
i got the point of 10Y but why it is 0Z instead of 10Z because the value of x is changed to 10 when the first object is called because objects are passed by reference...

Please advise!

There are two Data objects. The first one is created with int 10 and the second one is created with string "Z". Where do you see x being changed to 10 for the second Data object?