Example usage for java.util Iterator next

Introduction

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

Prototype

E next();

Source Link

Document

Returns the next element in the iteration.

Usage

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<String, Integer> swapIntKeysAndStrValues(Map<Integer, String> hm) {
    HashMap<String, Integer> nhm = new HashMap<String, Integer>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((String) m.getValue(), (Integer) m.getKey());
    }//from   w w  w . j  a v  a2  s  . c  o  m
    return nhm;
}

From source file:Main.java

public static <T> List<T> search(final String str, Collection<? extends T> coll, Comparable<? super T> comp) {
    if (comp == null)
        return null;
    List<T> list = new ArrayList<T>();
    Iterator<? extends T> i = coll.iterator();
    while (i.hasNext()) {
        T next = i.next();
        if (comp.compareTo(next) > 0) {
            list.add(next);/*from w w w.j  ava  2 s .  c o m*/
        }
    }
    return list;
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<String, String> swapStrKeysAndStrValues(Map<String, ?> hm) {
    HashMap<String, String> nhm = new HashMap<String, String>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((String) m.getValue(), (String) m.getKey());
    }// w  w  w .j  a  va2s  . com
    return nhm;
}

From source file:Main.java

public static JSONObject shallowDiffJSONObjects(JSONObject jo1, JSONObject jo2) throws JSONException {
    JSONObject result = new JSONObject();
    Iterator<String> it = jo2.keys();
    while (it.hasNext()) {
        String key = it.next();

        // See if the key is missing or the value is different in the other object
        Object val1 = jo1.opt(key);
        Object val2 = jo2.get(key);

        if (val1 == null || !val2.equals(val1))
            result.put(key, val2);
    }//from   ww  w .j a v  a2  s. co  m

    return result;
}

From source file:Main.java

/**
 * Adds the contents of an iterator to an existing Collection.
 * @param <T> The type of elements returned by the iterator.
 * @param collection The receptacle to put the elements into.
 * @param elementsToAdd The elements to add to the Collection.
 */// w w  w  . jav a 2  s .  c o m
public static <T> void addToCollection(Collection<T> collection, Iterator<T> elementsToAdd) {
    while (elementsToAdd.hasNext()) {
        T next = elementsToAdd.next();
        collection.add(next);
    }
}

From source file:Main.java

public static <T> List<T> listFromIterator(Iterator<T> i) {
    List<T> retval = new ArrayList<T>();
    while (i.hasNext())
        retval.add(i.next());
    return retval;
}

From source file:Main.java

public static List list(Iterator ite) {
    ArrayList ret = new ArrayList();
    while (ite.hasNext()) {
        Object o = ite.next();
        ret.add(o);//ww w .j  a v  a 2 s .  c o  m
    }
    return ret;
}

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;
    }//  ww w .  j  a  va 2s. c  o m
    return null;
}

From source file:Main.java

public static <K, V> Map<K, V> convertMap(final Map<K, V> map, final Collection<K> keys,
        final Collection<V> values) {
    if (keys.size() != values.size()) {
        throw new IllegalArgumentException("Invalid Collection. Collection size is not equals.");
    }/*  w w w  .j av a  2s.  c  o  m*/
    Iterator<V> valueIt = values.iterator();
    for (K key : keys) {
        map.put(key, valueIt.next());
    }
    return map;
}

From source file:Main.java

public static <T> T getByIndex(Iterable<T> iterable, int index) {
    T el = null;//from   www  .  j  av a2  s . c  o  m
    Iterator<T> it = iterable.iterator();
    for (int i = 0; it.hasNext(); i++) {
        T cur = it.next();
        if (i == index) {
            el = cur;
            break;
        }
    }
    return el;
}