Example usage for java.lang Iterable iterator

Introduction

In this page you can find the example usage for java.lang Iterable iterator.

Prototype

Iterator<T> iterator();

Source Link

Document

Returns an iterator over elements of type T .

Usage

From source file:Main.java

/**
 * Returns an iterable as an enumeration (some older library code excepts
 * these)//from  ww  w. j  a  v a 2 s.  c o m
 * @param iterable the iterable
 * @return an enumeration returning the same sequence of elements as the
 * parameter iterable
 * @precondition iterable != null
 * @postcondition result != null
 */
public static <T> Enumeration<T> asEnumeration(final Iterable<T> iterable) {
    final Iterator<T> it = iterable.iterator();
    return new Enumeration<T>() {
        @Override
        public boolean hasMoreElements() {
            return it.hasNext();
        }

        @Override
        public T nextElement() {
            return it.next();
        }
    };
}

From source file:Main.java

public static <T> T getFirst(Iterable<? extends T> iterable, T def) {
    final Iterator<? extends T> iter = iterable.iterator();
    return iter.hasNext() ? iter.next() : def;
}

From source file:Main.java

public static <ELEM, COLL extends Collection<? super ELEM>> COLL addAll2(COLL dest,
        Iterable<? extends ELEM> source) {
    return addAllFromIterator(dest, source.iterator());
}

From source file:Main.java

public static boolean isNullOrEmpty(final Iterable<?> iterable) {
    return (iterable == null) || (!iterable.iterator().hasNext());
}

From source file:Main.java

/**
 * Setzt die Daten des Iterables in das ComboBoxModel.
 * /*from ww  w.  j  av a  2s . c om*/
 * @param comboBox {@link JComboBox}
 * @param iterable {@link Iterable}
 */
public static void fillComboBox(final JComboBox<?> comboBox, final Iterable<?> iterable) {
    fillComboBox(comboBox, iterable.iterator());
}

From source file:Main.java

public static <T> T removeFrom(Iterable<T> collection, Predicate<T> predicate) {
    Iterator<T> it = collection.iterator();

    while (it.hasNext()) {
        T o = it.next();/*w  ww.j  ava  2 s  . c  o m*/

        if (predicate.test(o)) {
            it.remove();
            return o;
        }
    }

    return null;
}

From source file:Main.java

public static <T> Iterator<T> safeIterator(Iterable<T> iterable) {
    return iterable == null ? Collections.<T>emptyList().iterator() : iterable.iterator();
}

From source file:Main.java

public static <T, Tout> List<Tout> select(Iterable<T> source, Function<T, Tout> action) {
    if (source == null || !source.iterator().hasNext())
        return Collections.emptyList();
    List<Tout> result = new ArrayList<Tout>();
    for (T item : source) {
        result.add(action.apply(item));/*from  w  w  w .  j a  v  a2  s  .  c  o  m*/
    }

    return result;

}

From source file:Main.java

public static <T> T getByIndex(Iterable<T> iterable, int index) {
    T el = null;// w  ww . j a v a  2  s. c  om
    Iterator<T> it = iterable.iterator();
    for (int i = 0; it.hasNext(); i++) {
        T cur = it.next();
        if (i == index) {
            el = cur;
            break;
        }
    }
    return el;
}

From source file:Main.java

public static final <T> List<T> collect(Iterable<? extends T> it, Comparator<? super T> cmp) {
    return collect(it.iterator(), cmp);
}