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Constructor magic?

 
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All:
Snippet of code taken from one of the questions contained in the K&B SCJP6 Study Guide Master Exam:


I understand, according to the same book I referred to, that if I coded a constructor in my class then the compiler will not provide a no-arg constructor for me. OK, quick question: Can someone please tell me why the line of code at "Line 1" does not cause a compiler error?
Thank you for your time
Gary
 
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varargs allows you to pass zero to any number of arguments. Hence the parameter variable is treated as an empty array when you send nothing to it.

Have a print statement and see the length of nums
 
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Dear John,

It's a valuable information. Excellent.
BR,
 
Gary Marshall
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Got it. I understand. Thank you for your time.
Gary
 
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