This morning, I was one of few lucky web developers who got a Google Wave Invite from Google itself ! Google Wave is really cool, you should try it out when it’s out!

For me to enjoy Google Wave, I had to give away my 8 invites to friends close by so that we can try it out. The invites have to be verified, If you have an invite, add me to your contact list on Google Wave: milladd@googlewave.com.

Thank you Google !

Arrays like Integer[] is a subtype of Number[] but List< Integer > is not a subtype of List< Number >. We would like lists to behave more like arrays, in that we want to accept not only a list with elements of a given type, but also a list with elements of any subtype of a given type. We then have to use wildcards.

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