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(String separator, Iterable elements)
Joins a collection of elements into a single string value, with a specified separator. 
StringBuilder sb = new StringBuilder();
for (Iterator<?> i = elements.iterator(); i.hasNext();) {
    sb.append(i.next());
    if (i.hasNext() && separator != null) {
        sb.append(separator);
return sb.toString();
...
Stringjoin(String separator, Iterable objects)
Creates a string with toString() of each object with the given separator. 
if (separator == null) {
    throw new NullPointerException("The 'separator' cannot be null");
if (objects == null) {
    throw new NullPointerException("The 'objects' cannot be null");
StringBuilder string = new StringBuilder();
Iterator<?> iterator = objects.iterator();
...
Stringjoin(String separator, Iterable args)
join 
StringBuilder builder = new StringBuilder();
for (T project : args) {
    builder.append(project);
    builder.append(separator);
if (builder.length() > 0) {
    return builder.substring(0, builder.length() - 1);
} else {
...
Stringjoin(String seperator, Iterator objects)
join 
StringBuilder buf = new StringBuilder();
if (objects.hasNext())
    buf.append(objects.next());
while (objects.hasNext()) {
    buf.append(seperator).append(objects.next());
return buf.toString();
Stringjoin(String seprator, Iterable coll)
join 
return join("", seprator, coll);
voidjoin(StringBuilder buf, Iterable values, String separator)
append values to buf separated with the specified separator 
for (Iterator<?> i = values.iterator(); i.hasNext();) {
    buf.append(i.next());
    if (i.hasNext()) {
        buf.append(separator);
StringjoinIterableOnComma(Iterable iterable)
join Iterable On Comma 
if (iterable != null) {
    StringBuilder buf = new StringBuilder();
    Iterator<?> it = iterable.iterator();
    while (it.hasNext()) {
        buf.append(it.next());
        if (it.hasNext()) {
            buf.append(',');
    return buf.toString();
} else {
    return "";
IterablejoinIterables(final Iterable... iterables)
join Iterables 
return new Iterable<T>() {
    @Override
    public Iterator<T> iterator() {
        Iterator<T>[] iterators = new Iterator[iterables.length];
        for (int i = 0; i < iterators.length; i++) {
            iterators[i] = iterables[i].iterator();
        return joinIterators(iterators);
...
StringjoinStr(CharSequence glue, Iterable parts)
join Str 
return joinStr(glue, parts.iterator());
StringjoinStrings(Iterable arr, String glue)
join Strings 
StringBuilder ret = new StringBuilder();
boolean first = true;
for (Object s : arr) {
    if (!first) {
        ret.append(glue);
    } else {
        first = false;
    ret.append(s);
return ret.toString();