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[quote=bluebird;279103]hello, What problems will I encounter if I use Array although I don' know how many elements need I store? If I set the array size very large than I expected, can problem arises anymore? I tried to use Arraylist. But when there are many attributes, I always declare a …
hi i guess its not a problem with the code, it must function i see ur code is this ArrayList<Item> itemsList = new ArrayList<Item>(); ... Item anItem = new Item(); ... itemsList.add(anItem); double amount = itemsList.get(0).getStartValue(); and i understand from this is u r trying to add item object in …
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