Java Utililty Methods Iterable

List of utility methods to do Iterable

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Description

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

Method

StringBuilderappendTo(StringBuilder appendable, Iterable parts, CharSequence separator)
append To 
Iterator<?> iterator = parts.iterator();
if (iterator.hasNext()) {
    appendable.append(toString(iterator.next()));
    while (iterator.hasNext()) {
        appendable.append(separator);
        appendable.append(toString(iterator.next()));
return appendable;
voidcommafy(Iterable col, StringBuilder builder)
commafy 
for (Iterator itr = col.iterator(); itr.hasNext();) {
    Object obj = itr.next();
    builder.append(obj.toString());
    if (itr.hasNext()) {
        builder.append(", ");
booleancontainsSame(Iterable coll, Object obj)
contains Same 
for (Iterator<?> iterator = coll.iterator(); iterator.hasNext();) {
    Object element = iterator.next();
    if (element == obj)
        return true;
return false;
Iterable>convertIterable(final Iterable> iterables)
convert Iterable 
final List<Iterator<U>> iterators = new LinkedList<>();
for (Iterable<U> i : iterables) {
    iterators.add(i.iterator());
return iterators;
StringcreateDelimitedString(Iterable iterable, String delimiter)
create Delimited String 
Iterator iter = iterable.iterator();
String string = "";
while (iter.hasNext()) {
    string += iter.next();
    if (iter.hasNext())
        string += delimiter;
return string;
...
StringcreateUpdateTemplate(String table, Iterable columns)
A static helper method for generating SQL templates for UPDATE statements for the provided column colection or array 
StringBuilder builder = new StringBuilder();
builder.append("update ").append(table).append(" set ");
Iterator<String> it = columns.iterator();
while (it.hasNext()) {
    builder.append(it.next()).append(" = ?");
    if (it.hasNext())
        builder.append(", ");
return builder.append(" ").toString();
booleanequal(Iterable it1, Iterable it2)
equal 
Iterator i1 = it1.iterator();
Iterator i2 = it2.iterator();
return equal(i1, i2);
booleanequalsIterablesInOrder(Iterable i1, Iterable i2)
Check if values in iterables are identical and in identical order If both are instanceof Collection, this method check sizes first Calls only once Itarable#iterator() for both iterables 
if (i1 == i2) {
    return true;
if (i1 == null) {
    if (i2 == null) {
        return true;
    return false;
...
CfillFromIterable(C c, Iterable i)
Adds all of the items from a given Iterable into a Collection . 
return fillFromIterator(c, i.iterator());
TgetAny(Iterable iterable)
Returns one object from an Iterable or null if the iterable is empty. 
Iterator<T> iterator = iterable.iterator();
if (!iterator.hasNext()) {
    return null;
return iterator.next();