Java Utililty Methods Array to String

String s = "";
for (int i = 0; i < d.length; i++) {
    s = s + df.format(d[i]);
    if (i < d.length - 1)
        s = s + ",";
return s;

StringBuffer result = new StringBuffer();
if (a.length > 0) {
    result.append(a[0]);
    for (int i = 1; i < a.length; i++) {
        result.append(",");
        result.append(a[i]);
return "[" + result.toString() + "]";

StringBuffer sb = new StringBuffer();
for (int r = 0; r < array.length; r++) {
    sb.append(array[r] + ",");
return sb.toString();

int length = array.length;
if (length == 0)
    return "";
StringBuilder sb = new StringBuilder();
for (int i = 0; i < length; ++i) {
    sb.append(array[i]);
    if (i < length - 1)
        sb.append(separator);
...

return arrayToString(v, null);

StringBuilder sb = new StringBuilder();
sb.append('[');
for (double x : xs) {
    if (sb.length() != 1)
        sb.append(", ");
    sb.append(x);
sb.append(']');
...

try {
    return new String(array, ASCII_CHARSET);
} catch (UnsupportedEncodingException e) {
    return null;

int i;
int count;
final byte[] temp;
count = 0;
temp = new byte[length];
for (i = start; i < (start + length); i++) {
    if ((array[i] >= 0) && (array[i] < 32)) {
        temp[count] = 32;
...

if (array.length == 0) {
    return "";
StringBuilder sb = new StringBuilder();
for (Float o : array) {
    sb.append(o.toString());
    sb.append('|');
sb.deleteCharAt(sb.length() - 1);
return sb.toString();

if (a == null)
    return "null";
if (a.length == 0)
    return "";
final StringBuffer sb = new StringBuffer();
sb.append(a[0].toString());
for (int i = 1; i < a.length; i++) {
    sb.append(",");
...