Peter Potter wrote:How much does it take you to do a standard Enthuware OCA test ? Even though my results range between 90 and 100% it takes me about 4 hours to do the test . Can i assume the real exam is faster to do or is there something wrong with my brain speed ?
Campbell Ritchie wrote:I presume you meant “cast”. I see my spelling was just as bad.
Paul Anilprem wrote:. . . applying an explicit case. . . .I always find it amusing that the javac tool thinks the programmer knows what they are doing
[the javac tool] expects . . . that the programmer knows what they are doing . . .
Peter Potter wrote:
what i thought was that line 4 will throw classcastexception because classes are in the same inheritance tree and compiler is not that smart to define whether under the superclas's reference a is a subclass object ( there might be ) or superclass object and has to allow assigning a reference to b and at runtime it will become clear that under a was superclass object and it ill throw an exception .
Mohanraj Ramalingam wrote:Hello All,
Quick question on the certification. Bought certificate voucher on March 15 and it says 6 months validity. But the email says my voucher expires on 30 September.
IS it going to e Sep 15th or Sep 30? My understanding is 30 September. Can someone tell me is my understanding is correct.
Valentin Crettaz wrote:Very happy to be around for this week's book promo! Thanks Javaranch!
Go ahead and shoot all the questions you have! Yeeehaaa!!!
Brecht Geeraerts wrote:If the compiler doesn't allow the following:
Then I am wondering, in what type of scenario would one use List<? extends X>?
Also, is this what is meant by "the List becomes logically immutable"?
Brecht Geeraerts wrote:Ah, okay. Thanks, Paul. I did not know that
Brecht Geeraerts wrote:Is that book already available for purchase?