Answers for "convert an integer list in an array in java"

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

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);
}

Posted by: Guest on April-12-2020

int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
List lst = Arrays.asList(arr);
System.out.println(lst.size());

Posted by: Guest on January-01-1970

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