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Thread class constructor

Peter Swiss

Joined: Mar 03, 2011
Posts: 23
Hi guys,

This piece of code compiles fine

Class C does not implement Runnable. Still, object of C is passed to the Thread constructor.
Here is the API for Thread class..

The constructors are no-arg, with a Runnable or with a String. How come this code compiles, when class C is not a Runnable nor a String?
Suhrid Karthik
Ranch Hand

Joined: Aug 31, 2008
Posts: 58

The Thread class itself implements Runnable. Hence, since C extends Thread, C also IS-A Runnable.
Peter Swiss

Joined: Mar 03, 2011
Posts: 23
Ok, thanks Suhrid!
It is sorta covered in the JavaRanch Style Guide.
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