Java Utililty Methods Array to String

if (arr == null) {
    return "";
final StringBuilder sb = new StringBuilder();
for (final Object item : arr) {
    sb.append(item);
return sb.toString();
...

String result = "[";
for (int i = 0; i < array.length; ++i) {
    result += array[i].toString();
    if (i < array.length - 1) {
        result += ", ";
result += "]";
...

final StringBuilder builder = new StringBuilder();
builder.append(ARRAY_START);
if (array != null && array.length > 0) {
    appendNonEmptyArrayToString(array, builder);
builder.append(ARRAY_END);
return builder.toString();

if (args == null || args.length == 0)
    return null;
final StringBuilder sb = new StringBuilder();
for (String arg : args)
    sb.append(arg).append(",");
return sb.substring(0, sb.length() - 1);

return arrayToString(strs, ESCAPE, COMMA);

if (value == null || value.length == 0)
    return "";
StringBuilder buff = new StringBuilder(value[0]);
for (int i = 1; i < value.length; ++i)
    buff.append("*").append(value[i]);
return buff.toString();

boolean isFirst = true;
StringBuilder str = new StringBuilder();
for (String mode : values) {
    if (!isFirst) {
        str.append(',');
    str.append(mode);
    isFirst = false;
...

String sdata = "";
for (final T o : data) {
    sdata += "," + o;
return sdata.substring(1);

return collectionToString(Arrays.asList(array), DEFAULT_LIST_SEPARATOR);

String result = "";
for (int i = 0; i < a.length; i++) {
    result += floatToString(a[i]) + " ";
return result;