Java Utililty Methods List to Array

List of utility methods to do List to Array

  1. HOME
  2. Java
  3. L
  4. List to Array

Description

The list of methods to do List to Array are organized into topic(s).

Method

String[]convertStringListToArray(List list)
Konwertuje liste typu String do tablicy. 
String[] result = new String[list.size()];
list.toArray(result);
return result;
String[]convertStringListToArray(List list)
convert String List To Array 
if (list == null) {
    return new String[0];
String array[] = new String[list.size()];
for (int i = 0; i < list.size(); i++) {
    array[i] = list.get(i);
return array;
...
Object[][]convertToArray(final List> list)
convert To Array 
final Object[][] array = new Object[list.size()][];
int i = 0;
for (List<Object> nestedList : list) {
    array[i++] = nestedList.toArray(new Object[nestedList.size()]);
return array;
int[]convertToArray(List list)
convert To Array 
int[] array = new int[list.size()];
Iterator<Integer> iterator = list.iterator();
for (int i = 0; i < array.length; i++)
    array[i] = iterator.next().intValue();
return array;
ObjectconvertToArray(List args)
convert To Array 
String[] array = new String[args.size()];
args.toArray(array);
return array;
double[]listToArray(final List list)
List to array. 
double[] array = new double[list.size()];
for (int i = 0; i < array.length; i++) {
    array[i] = list.get(i).doubleValue();
return array;
double[]listToArray(final List a)
Converts a List to a regular double[] 
final double[] x = new double[a.size()];
int i = 0;
for (double d : a)
    x[i++] = d;
return x;
Object[]listToArray(List data)
list To Array 
Object newdata[] = new Object[data.size()];
int i = 0;
for (Iterator iterator = data.iterator(); iterator.hasNext();) {
    Object cur = iterator.next();
    newdata[i] = cur;
    i++;
return newdata;
...
long[]listToArray(List ids)
Converts the give list of Long objects to array. 
long[] result = new long[ids.size()];
for (int i = 0; i < result.length; i++) {
    result[i] = ((Long) ids.get(i)).longValue();
return result;
Object[]listToArray(List list)
list To Array 
return list.stream().toArray(Object[]::new);