Java Utililty Methods Iterable Join

List of utility methods to do Iterable Join

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Description

The list of methods to do Iterable Join are organized into topic(s).

Method

Stringjoin(Iterable items)
Joins the given sequence of strings with a command and space between each consecutive pair. 
return join(items, ", ");
Stringjoin(Iterable items, String delimiter)
join 
StringBuffer buffer = new StringBuffer();
Iterator<?> iter = items.iterator();
if (iter.hasNext()) {
    buffer.append(iter.next().toString());
    while (iter.hasNext()) {
        buffer.append(delimiter);
        buffer.append(iter.next().toString());
return buffer.toString();
Stringjoin(Iterable items, String separator)
Same as #join(String[],String) but expecting an Iterable instead of an array 
final StringBuilder builder = new StringBuilder();
final Iterator<?> it = items.iterator();
while (it.hasNext()) {
    builder.append(it.next().toString());
    if (it.hasNext()) {
        builder.append(separator);
return builder.toString();
Stringjoin(Iterable iterable, String separator)
join 
return iterable == null ? null : join(iterable.iterator(), separator);
Stringjoin(Iterable iterable, String separator)
Joins the elements of the provided Iterable into a single String containing the provided elements. 
StringBuffer buffer = new StringBuffer();
Iterator<?> iterator = iterable.iterator();
while (iterator.hasNext()) {
    buffer.append(iterator.next());
    if (iterator.hasNext()) {
        buffer.append(separator);
return buffer.toString();
Stringjoin(Iterable list, String delimiter)
join 
if (list == null)
    return null;
StringBuilder builder = new StringBuilder();
for (Iterator<?> i = list.iterator(); i.hasNext();) {
    Object value = i.next();
    builder.append(value);
    if (i.hasNext())
        builder.append(delimiter);
...
Stringjoin(Iterable objects)
join 
Iterator<?> iterator = objects.iterator();
if (!iterator.hasNext()) {
    return "";
StringBuilder buffer = new StringBuilder(iterator.next().toString());
while (iterator.hasNext()) {
    buffer.append(iterator.next().toString());
return buffer.toString();
Stringjoin(Iterable objects, String delimiter)
join 
Iterator<?> i = objects.iterator();
if (!i.hasNext()) {
    return "";
StringBuilder result = new StringBuilder();
result.append(i.next());
while (i.hasNext()) {
    result.append(delimiter).append(i.next());
...
Stringjoin(Iterable parts, String delimiter)
Joins the String values of the contents of the Object array (parts) by inserting (delimiter) between each String. 
if (parts == null)
    return null;
if (delimiter == null)
    throw new NullPointerException(
            "The delimiter cannnot be null. Use an empty string if you want no delimiter.");
StringBuilder result = new StringBuilder();
String currentDelim = null;
for (Object part : parts) {
...
Stringjoin(Iterable target, String separator)
join 
StringBuilder sb = new StringBuilder();
Iterator<?> it = target.iterator();
if (it.hasNext()) {
    sb.append(it.next());
    while (it.hasNext()) {
        sb.append(separator);
        sb.append(it.next());
return sb.toString();