Java Utililty Methods Iterator

List of utility methods to do Iterator

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Description

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

Method

StringprintContainer(Iterator it, String sep)
print Container 
String ret = "";
while (it.hasNext()) {
    ret += it.next().toString();
    if (it.hasNext()) {
        ret += sep;
return ret;
...
voidprintElements(String desc, Iterator i)
Print every element of an iterator to stdout. 
printElements("", desc, i);
voidprintIterator(final Iterator iterator)
Helper method for printing the content from an Iterator. 
int i = 1;
while (iterator.hasNext()) {
    final T element = iterator.next();
    System.out.println(i + ".)Element:" + element);
    i++;
voidprintIterator(Iterator i, String header)
print Iterator 
System.out.println(header);
for (int c = 0; c < header.length(); c++)
    System.out.print("=");
System.out.println();
if (i.hasNext()) {
    while (i.hasNext())
        System.out.println(i.next());
} else
...
voidprintIterator(Iterator> it)
print Iterator 
while (it.hasNext()) {
    Map.Entry<K, V> entry = it.next();
    System.out.println(entry.getKey() + "  " + entry.getValue());
voidput(String key, Iterator value)
put 
iteratorMap.put(key, value);
MapputAllFromAll(Map map, Iterator> mapsIterator)
Puts all entries from all maps in the range of an iterator to a given map. 
for (Map<K, V> eachMap : in(mapsIterator)) {
    map.putAll(eachMap);
return map;
intread(Iterator it, E[] array)
read 
int i = 0;
for (; i < array.length && it.hasNext();) {
    E item = it.next();
    if (item != null) {
        array[i++] = item;
return i;
...
SetreduceSet(Iterator> values)
A helper method for set MapReduce. 
Set<T> set = new HashSet<>();
while (values.hasNext()) {
    set.addAll(values.next());
return set;
booleanremoveAll(Collection collection, Iterator itemsToRemove)
Removes from a collection all items retrieved from a specified iterator. 
boolean modified = false;
while (itemsToRemove.hasNext()) {
    Object o = itemsToRemove.next();
    while (true) {
        if (collection.remove(o)) {
            modified = true;
        } else {
            break;
...