Answers for "java convert list to integer array"

list to int array in java 8

int[] array = list.stream().mapToInt(i->i).toArray();

Posted by: Guest on July-30-2020

convert list of integer to array in java

List<Integer> al = new ArrayList<Integer>(); 
Integer[] arr = new Integer[al.size()]; 
arr = al.toArray(arr);

Posted by: Guest on May-22-2020

how to convert int array to Integer List in java

int[] ints = {1,2,3};
List<Integer> list = Arrays.stream(ints).boxed().collect(Collectors.toList());

Posted by: Guest on August-28-2021

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