Java Utililty Methods Array From

byte[] arrayFromArrayWithLength(final byte[] array, final int length)
array From Array With Length

final byte[] output = new byte[length];
for (int j = 0; j < length; j++) {
 output[j] = array[(j % array.length)];
return output;

double[] arrayFromIndex(double[][] values, int index)
array From Index

double[] array = new double[values.length];
for (int i = 0; i < values.length; i++) {
 array[i] = values[i][index];
return array;

String[] arrayFromList(String aList)
Function arrayFromList Given a comma seperated list, possibly within brackets this function will return all the comma seperated items as an array from strings

String aS1 = aList.replaceAll("[\\s\"\'\\]\\[]+", "");
String[] aV = aS1.split(",");
return aV;

String[] arrayFromString(String fromString)
array From String

if (fromString == null) {
 return null;
return fromString.split(";");

String[] arrayFromString(String s)
array From String

if (s == null)
 return new String[] {};
if (!s.startsWith("[") || !s.endsWith("]"))
 throw new IllegalArgumentException();
if (s.length() == 2)
 return new String[] {};
return s.substring(1, s.length() - 1).split(" *, *");

String[] arrayFromString(String str)
array From String

if ((str != null) && (str.length() > 0)) {
 return str.split("[ ,;]");
} else {
 return null;

Boolean[] toArray(boolean[] array)
to Array

Boolean[] newArray = new Boolean[array.length];
for (int i = 0; i < array.length; i++) {
 newArray[i] = Boolean.valueOf(array[i]);
return newArray;

boolean[] toArray(CharSequence input)
Translates a String of zero ('0') and one ('1') characters to an array of boolean.

int len = input.length();
boolean[] bools = new boolean[len];
for (int i = 0; i < len; i++) {
 bools[i] = (input.charAt(i) == '1');
return bools;

Class[] toArray(Class interfaceClass)
to Array

return new Class[] { interfaceClass };

double[] toArray(Double[] array)
to Array

if (array == null) {
 return null;
double[] data = new double[array.length];
for (int i = 0; i < array.length; i++) {
 double val = (array[i] == null) ? 0 : array[i].intValue();
 data[i] = val;
return data;