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 ArrayList<String> getHashMap(HashMap<String, String> hm) {
    ArrayList<String> a = new ArrayList<String>();
    Set<Map.Entry<String, String>> s = hm.entrySet();
    Iterator<Map.Entry<String, String>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, String> m = (Map.Entry<String, String>) it.next();
        a.add(m.getKey() + "\t" + m.getValue());
    }// w  ww. j a v  a  2  s .  com
    return a;
}

From source file:Main.java

public static void dumpIntent(Intent i) {

    Bundle bundle = i.getExtras();/*from w  w  w.  ja  va  2  s  . c  o  m*/
    if (bundle != null) {
        Set<String> keys = bundle.keySet();
        Iterator<String> it = keys.iterator();
        while (it.hasNext()) {
            String key = it.next();
        }
    }
}

From source file:Main.java

public static <T> T first(Collection<T> c) {
    if (isEmpty(c))
        return null;

    if (c instanceof List)
        return (T) ((List<T>) c).get(0);

    Iterator<T> iter = c.iterator();
    if (iter.hasNext()) {
        return iter.next();
    }/*from  ww w.  jav  a 2 s .  co m*/
    return null;
}

From source file:Main.java

public static String implode(Iterator it) {
    StringBuilder sb = new StringBuilder();
    while (it.hasNext()) {
        sb.append(it.next());/*from  w ww .j ava2 s.c  om*/
        sb.append(", ");
    }

    return sb.toString().replaceAll(", +$", "");
}

From source file:Main.java

public static ArrayList<String> getHashMap2(HashMap<String, Integer> hm) {
    ArrayList<String> a = new ArrayList<String>();
    Set<Map.Entry<String, Integer>> s = hm.entrySet();
    Iterator<Map.Entry<String, Integer>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, Integer> m = (Map.Entry<String, Integer>) it.next();
        a.add(m.getKey() + "\t" + m.getValue());
    }//from   w ww.  j a v  a2 s .c om
    return a;
}

From source file:Main.java

private static void setSizes(java.util.List<JComponent> aComponents, Dimension aDimension) {
    Iterator<JComponent> compsIter = aComponents.iterator();
    while (compsIter.hasNext()) {
        JComponent comp = (JComponent) compsIter.next();
        comp.setPreferredSize((Dimension) aDimension.clone());
        comp.setMaximumSize((Dimension) aDimension.clone());
    }/*  www  .  java  2  s.  c om*/
}

From source file:Main.java

/**
 * @param iterable//from   w ww. j  av  a 2  s .  co m
 * @return null if the iterable element is null or if there are no elements in it or the first element if it does
 */
public static <E> E first(final Iterable<E> iterable) {
    if (null == iterable) {
        return null;
    }
    final Iterator<E> it = iterable.iterator();
    if (!it.hasNext()) {
        return null;
    }
    return it.next();
}

From source file:Main.java

public static Map<Object, Object> copySafelyToObjectToObjectMap(Map<?, ?> map) {
    Map<Object, Object> castedCopy = new LinkedHashMap<Object, Object>();

    if (map == null) {
        return castedCopy;
    }/*  w  w w  .ja v a  2  s  .c o m*/

    Iterator<?> it = map.keySet().iterator();
    while (it.hasNext()) {
        Object nextKey = it.next();
        castedCopy.put(nextKey, map.get(nextKey));
    }
    return castedCopy;
}

From source file:Main.java

public static boolean equalsSet(Collection c1, Collection c2) {
    boolean equals;
    if (c1 == null) {
        equals = (c2 == null);/*from  w ww. j a v  a 2 s  . c  om*/
    } else if (c2 == null) {
        equals = false;
    } else if (c1.size() == c2.size()) {
        equals = true;
        Iterator iterC1 = c1.iterator();
        while (equals && iterC1.hasNext()) {
            Object o1 = iterC1.next();
            equals = c2.contains(o1);
        }
    } else {
        equals = false;
    }
    return equals;
}

From source file:Main.java

/**
 * not tested yet// ww w  . j a v a  2  s.co  m
 * 
 * @param map
 * @return
 */
public static List<Object> getMapValues(Map<Object, Object> map) {
    List<Object> valuemaplist = new ArrayList<Object>();

    Iterator<Object> iterator = map.keySet().iterator();
    while (iterator.hasNext()) {
        valuemaplist.add(map.get(iterator.next()));
    }
    return valuemaplist;
}