Java Utililty Methods Iterator from

List of utility methods to do Iterator from

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Description

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

Method

intgetMaxLength(Iterator i)
calculate the maximum length of all strings in i. 
int max = 0;
while (i.hasNext()) {
    String s = i.next().toString();
    int c = s.length();
    if (c > max)
        max = c;
return max;
...
doublegetPerplexity(Iterator probStream)
get Perplexity 
double sum = 0.0f;
return sum;
IteratorgetPersistentKeysIterator(HashMap hashMap)
Returns an iterator for the hash map keys that is not changed by parallel changes to the hash map. 
return ((HashMap) hashMap.clone()).keySet().iterator();
StringgetSigLinePastOtherAnnotations(String selfCmprurrentLine, Iterator line_itr)
get Sig Line Past Other Annotations 
while (selfCmprurrentLine.trim().startsWith("@")) { 
    selfCmprurrentLine = line_itr.next(); 
return selfCmprurrentLine;
ListgetSomeElements(Iterator iterator, int limit)
get Some Elements 
ArrayList<T> list = new ArrayList<>();
int currentAmount = 0;
while (iterator.hasNext() && (currentAmount++ < limit)) {
    list.add(iterator.next());
return list;
ListgetSubList(Iterator iterator, int startIndex, int numberOfItems)
Create a list of objects taken from the given iterator and crop the resulting list according to the startIndex and numberOfItems parameters. 
List croppedList = new ArrayList(numberOfItems);
int skippedRecordCount = 0;
int copiedRecordCount = 0;
while (iterator.hasNext()) {
    Object object = iterator.next();
    if (++skippedRecordCount <= startIndex) {
        continue;
    croppedList.add(object);
    if ((numberOfItems != 0) && (++copiedRecordCount >= numberOfItems)) {
        break;
return croppedList;
IteratorgetTypedIterator(Iterator it, Class clz)
get Typed Iterator 
return (Iterator<T>) it;
IteratortoIterator(Enumeration enumeration)
Adapt an enumeration to an iterator. 
@SuppressWarnings("hiding")
class EnumerationIterator<E> implements Iterator<E> {
    private Enumeration<E> enumeration;
    public EnumerationIterator(Enumeration<E> enumeration) {
        this.enumeration = enumeration;
    public boolean hasNext() {
        return this.enumeration.hasMoreElements();
...