javaConvert any ArrayList to Array
T[] typedArray = typedList.toArray(T[]::new);ctrl + cT[]is an array of reference type T. | typedListis an ArrayList of type T. |
toArrayis a method of ArrayList to convert ArrayList to an Array. | T[]::newis a method reference of IntFunction<T[]> generator. |
Usage example
// initialization of ArrayList
ArrayList<Integer> typedList=new ArrayList<>();
// Adding 1 and 2 to ArrayList
typedList.add(1);
typedList.add(2);
//converting to Integer typed array
Integer[] typedArray = typedList.toArray(Integer[]::new);
// printing array to console
System.out.println(Arrays.toString(typedArray));output
[1, 2]