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I would like to use code similar to the following:
int letterIndex[];
LinkedList<Integer> letterList;
…
if(!letterList.isEmpty()) letterIndex = (Integer[])letterList.toArray();
However, it is not allowed, and apparently the cast to Integer[] is not autoboxed when converting to int[]. How would I accomplish the equivalent without declaring letterIndex as Integer[] instead of int[]?
You’d have to create a new array and assign each value from the
Integer[]array.Apache commons-lang has
ArrayUtils.toPrimitive(wrapperArray).