Example usage for java.util Iterator hasNext

Introduction

In this page you can find the example usage for java.util Iterator hasNext.

Prototype

boolean hasNext();

Source Link

Document

Returns true if the iteration has more elements.

Usage

From source file:Main.java

public static Map<String, Boolean> parseBooleanJsonMap(JSONObject object) throws JSONException {
    Map<String, Boolean> map = new ArrayMap<String, Boolean>();
    Iterator<String> keys = object.keys();
    while (keys.hasNext()) {
        String key = keys.next();
        map.put(key, object.getBoolean(key));
    }// ww w.  j  av a 2  s  .c  o  m
    return map;
}

From source file:Main.java

public static <ELEM, COLL extends Collection<? super ELEM>> COLL addAllFromIterator(COLL dest,
        Iterator<? extends ELEM> source) {
    while (source.hasNext()) {
        dest.add(source.next());/*from  w ww .ja  v  a 2  s  .  com*/
    }
    return dest;
}

From source file:Main.java

/** @return whether given coll contains all elements of other, using a naive/basic algorithm. */
public static boolean containsAll(Collection<?> coll, Collection<?> other) {
    Iterator<?> citer = other.iterator();
    while (citer.hasNext())
        if (!coll.contains(citer.next()))
            return false;
    return true;// w  w w .  jav a 2 s .c o m
}

From source file:Main.java

public static Object keyString(HashMap<String, String> map, String o) {
    Iterator<String> it = map.keySet().iterator();
    while (it.hasNext()) {
        Object keyString = it.next();
        if (map.get(keyString).equals(o))
            return keyString;
    }/*from  w  w  w. j av  a2s. co m*/
    return null;
}

From source file:Main.java

private static String buildQueryString(String method, Map<String, String> args) {
    String qry = buildQueryString(method);
    Iterator it = args.entrySet().iterator();
    while (it.hasNext()) {
        String key = (String) it.next();
        String val = args.get(key);
        qry = qry.concat("?").concat(key).concat("=").concat(val);
    }/*from  ww w.  j  a  v  a  2 s  .  c o  m*/
    return qry;
}

From source file:CollectionAll.java

static void traverse(Collection coll) {
    Iterator iter = coll.iterator();
    while (iter.hasNext()) {
        String elem = (String) iter.next();
        System.out.print(elem + " ");
    }/*w ww  .ja  v  a2 s.  co  m*/
    System.out.println();
}

From source file:Main.java

public static <E> boolean isEmpty(Collection<E> collection) {
    if (collection == null || collection.isEmpty()) {
        return true;
    }/*from  w  w w  .j  a v a  2  s  . c o  m*/
    Iterator<E> it = collection.iterator();
    while (it.hasNext()) {
        E type = (E) it.next();
        if (type != null) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static <E> boolean contains(Collection<E> c, E item, BiPredicate<? super E, ? super E> equalTester) {
    Iterator<E> iter = c.iterator();
    while (iter.hasNext()) {
        if (equalTester.test(iter.next(), item)) {
            return true;
        }//w w  w .j  av  a  2  s  .c om
    }
    return false;
}

From source file:Main.java

/**
 * Removes nulls from provided collection.
 * //from  w  w w . j a v a 2s  .  c om
 * @param c
 *            to remove nulls from
 * @return number of removed elements
 */
@SuppressWarnings("rawtypes")
public static int removeNulls(Collection c) {
    int removed = 0;
    Iterator iterator = c.iterator();
    while (iterator.hasNext()) {
        if (iterator.next() == null) {
            iterator.remove();
            removed++;
        }
    }
    return removed;
}

From source file:Main.java

public static boolean remove(Collection collection, Object object) {
    boolean removed = false;
    Iterator it = collection.iterator();
    while (it.hasNext()) {
        Object o = it.next();/*from www .j a  va  2 s  .c o m*/
        if (o.equals(object)) {
            removed = true;
            it.remove();
            break;
        }
    }

    return removed;
}