java - Array w/ Generics -


i have read what's reason can't create generic array types in java? . came when tried code:

hashmap<string, string>[] ret = new hashmap<string, string>[arraysize];

i decided "get wild" , try else

arraylist<hashmap<string, string>> ret = new arraylist<hashmap<string, string>>();

now, don't understand why first option bad/not-supported , second option compiles.

what missing? in first method error , cannot compile while second method has no compiler issues.

i prefer follow intelligent programming principles, not understand difference in particular case.

to point out know, second 1 compiles. arraylist not array, your program won't run generic array problem.

you're wondering how arraylist then. in implementation of arraylist i've seen, internally uses object array--not generic. class lot of casting.


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