• Post Reply Bookmark Topic Watch Topic
  • New Topic

overloading generic methods  RSS feed

Mike Mitchell
Ranch Hand
Posts: 38
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi guys. I have two questions about generic method overloading.

With regard to this code:

(a) When methods 1 and 3 are commented in, compiler complains about 'call 2', presumably because Number implements Comparable. If I comment out 'method 1', the compiler chooses the method with the narrower upper bound. Is there a rule about overloading generic methods to be deduced from that? Does this have something to do with 'covariance'?

(b) When methods 3 and 4 are commented out the autoboxing of calls 2 and 3 works fine, however when 3 and 4 are in (and method 1 out per a), call 2 fails with:

and call 3 with:

If I explicitly box them myself it works as expected. That seems strange to me.

[ June 21, 2008: Message edited by: Mike Mitchell ]
Consider Paul's rocket mass heater.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!