integer arraylist to int array
//only works in java 8 or later
list.stream().mapToInt(i -> i).toArray();integer arraylist to int array
//only works in java 8 or later
list.stream().mapToInt(i -> i).toArray();convert int array to integer list java
int[] arr = {1,2,3};
IntStream.of(arr).boxed().collect(Collectors.toList());convert array of int to arraylist java
int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
intList.add(i);
}convert arraylist to array int
templist.stream().mapToInt(i->i).toArray();arraylist to int array conversion in java
//use this if you don't want to use any methods to convert an
//arrayList(with the same size as required array) to a 'int[]' type.
//Also, this is only useful when you know the size of the array you're working with.
int[] array = new int[size];
for (int i = 0; i < array.length; i++) {
ans[i] = arraylist.get(i);
}
// array will be now of int[] type
// Also as @FineFinch pointed it could be done using :
//only works in java 8 or later
list.stream().mapToInt(i -> i).toArray();Copyright © 2021 Codeinu
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