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 list of integer to array in java
List<Integer> al = new ArrayList<Integer>();
Integer[] arr = new Integer[al.size()];
arr = al.toArray(arr);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);
}List of Integer to int array
int [] ints = list.stream().mapToInt(Integer::intValue).toArray();java int array to Integer ArrayList
int[] ints = {1, 2, 3};
List<Integer> intList = new ArrayList<Integer>(ints.length);
for (int i : ints)
{
intList.add(i);
}Copyright © 2021 Codeinu
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