Java Utililty Methods Array to String

if (array == null || array.length == 0) {
    return "";
StringBuffer s = new StringBuffer(32 * array.length);
s.append(array[0]);
for (int i = 1; i < array.length; i++) {
    s.append(separator).append(array[i]);
return s.toString();

if (array == null) {
    return "";
} else {
    StringBuffer str = new StringBuffer("");
    for (int i = 0; i < array.length; ++i) {
        if (i != array.length - 1) {
            str.append(array[i].toString()).append(split);
        } else {
...

if (ary == null || ary.length == 0)
    return "";
final StringBuffer sb = new StringBuffer(50);
for (int j = 0; j < ary.length; ++j) {
    if (j > 0)
        sb.append(',');
    if (ary[j] != null)
        sb.append(ary[j]);
...

if (list == null) {
    return null;
String res = "[ ";
for (int i = 0; i < list.length; ++i) {
    res += list[i] + " ";
res += "]";
...

boolean first = true;
StringBuilder sb = new StringBuilder();
for (Object object : objects) {
    if (first) {
        first = false;
    } else {
        sb.append(", ");
    sb.append(object.toString());
return sb.toString();

if (objects == null)
    return "null";
StringBuffer buffer = new StringBuffer("{");
for (int i = 0; i < objects.length; i++) {
    if (i > 0)
        buffer.append(", ");
    buffer.append(objects[i]);
buffer.append("}");
return buffer.toString();

List<Object> x = newList();
x.addAll(Arrays.asList(objects));
return x.toString();

int num = objects.length;
if (num == 0) {
    return "[]";
} else {
    StringBuffer buffer = new StringBuffer("[ ");
    for (int i = 0; i < num; i++) {
        if (i > 0) {
            buffer.append(", ");
...

return arrayToString(objs, "");

StringBuffer buffer = new StringBuffer();
if (objs != null) {
    for (int i = 0; i < objs.length; i++) {
        if (buffer.length() > 0)
            buffer.append("\n");
        buffer.append(objs[i]);
return buffer.toString();