Java Utililty Methods List to Array

List of utility methods to do List to Array

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Description

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

Method

String[]listToArray(List list)
list To Array 
final int size = list.size();
String[] str = (String[]) list.toArray(new String[size]);
return str;
Object[]listToArray(List list)
list To Array 
if (list == null) {
    return new Object[] {};
Object[] arr = new Object[list.size()];
return list.toArray(arr);
Object[]listToArray(List list)
Convert List to Array[] 
if (list == null) {
    return null;
} else {
    Object valueArr[] = new Object[list.size()];
    list.toArray(valueArr);
    return valueArr;
byte[]listToArray(List bytes)
list To Array 
byte[] buffer;
buffer = new byte[bytes.size()];
int i = 0;
for (Byte b : bytes) {
    buffer[i++] = b;
return buffer;
Comparable[]listToArray(List list)
list To Array 
Comparable[] array = new Comparable[list.size()];
int i = 0;
for (Comparable c : list) {
    array[i] = c;
    i++;
return array;
double[]listToArray(List doubles)
Convert a list of Doubles to an array of primitive double types. 
double[] array = new double[doubles.size()];
for (int i = 0; i < doubles.size(); i++) {
    array[i] = doubles.get(i);
return array;
double[]listToArray(List list)
list To Array 
double[] arr = new double[list.size()];
for (int i = 0; i < list.size(); ++i)
    arr[i] = list.get(i);
return arr;
float[]listToArray(List list)
list To Array 
int size = list != null ? list.size() : 0;
float[] floatArr = new float[size];
for (int i = 0; i < size; i++) {
    floatArr[i] = list.get(i);
return floatArr;
int[]ListToArray(List list)
Convert a List of Integer s to an array of ints. 
if (list == null) {
    return null;
int count = list.size();
int[] result = new int[count];
for (int i = 0; i < count; ++i) {
    result[i] = list.get(i);
return result;
int[]listToArray(List list)
list To Array 
if (isEmpty(list)) {
    return null;
int[] result = new int[list.size()];
for (int i = 0; i < result.length; i++) {
    result[i] = list.get(i);
return result;
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