>>> Why don't we have >>> public <T super E> T[] toArray(T[] a) ? >>> This would prevent from the cast >>> r[i] = (T)it.next(); >> >> It's too late to change the method signature now. > > Sorry about my english, I meant why don't we have had ... > In other words, has there been a reason that it was not like that from the > beginning?
Perhaps because it is not legal Java? Éamonn On 13 March 2012 12:16, Ulf Zibis <ulf.zi...@gmx.de> wrote: > > Am 10.03.2012 13:52, schrieb David Holmes: >> >> On 10/03/2012 12:02 PM, Ulf Zibis wrote: >>> >>> Why don't we have >>> public <T super E> T[] toArray(T[] a) ? >>> This would prevent from the cast >>> r[i] = (T)it.next(); >> >> >> It's too late to change the method signature now. > > Sorry about my english, I meant why don't we have had ... > In other words, has there been a reason that it was not like that from the > beginning? > > >> Wouldn't following statement potentially throw a ClassCastException ? >>> >>> r[i] = (T)it.next(); >> >> >> Apparently not. I passed in a String[] when it should be Object[] and got >> ArrayStoreException. Checking the bytecode I don't see a checkcast. > > Thanks, checking that out. > > -Ulf >
