Java Utililty Methods ArrayList to Array

byte[] temp = new byte[indata.size()];
for (int i = 0; i < temp.length; i++)
    temp[i] = (byte) indata.get(i).byteValue();
return temp;

String resultString = null;
for (Byte byteToProcess : byteArrayList) {
    resultString += (char) (byteToProcess.byteValue());
return resultString;

StringBuffer buf = new StringBuffer();
for (Byte b : al) {
    buf.append(String.format("%02X", b));
return buf.toString();

int[] list = new int[al.size()];
for (int i = 0; i < al.size(); i++)
    list[i] = al.get(i);
return list;

Long[] outputNodeIndices = new Long[alInput.size()];
int j = 0;
for (Iterator i = alInput.iterator(); i.hasNext(); j++) {
    outputNodeIndices[j] = ((Long) i.next()).longValue();
return (outputNodeIndices);

String[] temp = al.toArray(new String[0]);
String[] list = new String[temp.length];
System.arraycopy(temp, 0, list, 0, temp.length);
return list;

int num = a.size();
double[] result = new double[num];
for (int i = 0; i < num; i++)
    result[i] = ((Double) a.get(i)).doubleValue();
return result;

if (tempList.size() == 0) {
    return null;
int[] tempArray = new int[tempList.size()];
for (int i = 0; i < tempList.size(); i++) {
    tempArray[i] = tempList.get(i);
return tempArray;
...

int size = list.size();
int[] result = new int[size];
for (int i = 0; i < size; i++) {
    result[i] = ((Integer) list.get(i)).intValue();
return result;

return arrayListToStringArray(arrayList);