Answers for "how to convert an arraylist to an int array in java"

integer arraylist to int array

//only works in java 8 or later
list.stream().mapToInt(i -> i).toArray();

Posted by: Guest on July-12-2020

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

convert Integer arraylist to array java

Your_ArrayList_Name.stream().mapToInt(k->k).toArray();

Posted by: Guest on February-05-2021

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