Answers for "how to convert arraylist integer to array in java"

integer arraylist to int array

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

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 arraylist to array int

templist.stream().mapToInt(i->i).toArray();