Example usage for java.util Set iterator

Introduction

In this page you can find the example usage for java.util Set iterator.

Prototype

Iterator<E> iterator();

Source Link

Document

Returns an iterator over the elements in this set.

Usage

From source file:Main.java

License:asdf

public static <K, V> Object getKey(Map<K, V> in, V value) {
    Set<K> key = in.keySet();
    Iterator<K> keyIterator = key.iterator();
    while (keyIterator.hasNext()) {
        K valueObject = (K) keyIterator.next();
        if (in.get(valueObject).equals(value)) {
            return valueObject;
        }//  w w w. jav  a 2 s  . co  m
    }
    return null;
}

From source file:Main.java

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

From source file:Main.java

public static void print(Set set) {
    Iterator iter = set.iterator();
    System.out.println("Printing Set: ");
    while (iter.hasNext()) {
        System.out.println("   " + iter.next());
    }/*from   w  ww .ja  v  a 2  s  .co m*/
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static String getKeyByValue(Map<?, String> hm, String value) {
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        if (m.getValue().equals(value))
            return m.getKey() + "";
    }//w  w w  . j  av a  2  s .  c  om
    return null;
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<Integer, String> swapStrKeysAndIntValues(Map<String, Integer> hm) {
    HashMap<Integer, String> nhm = new HashMap<Integer, String>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((Integer) m.getValue(), (String) m.getKey());
    }//from w ww. j av  a2s  .c om
    return nhm;
}

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  . ja  v  a2  s  . c om*/
    return nhm;
}

From source file:SetUtils.java

public static boolean containsAny(Set a, Set b) {
    for (Iterator iter = b.iterator(); iter.hasNext();) {
        if (a.contains(iter.next())) {
            return true;
        }// ww  w  .ja  v  a  2s  .c o  m
    }
    return false;
}

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());
    }/*from w  w  w  .  ja v a  2s  .c  o  m*/
    return nhm;
}

From source file:Main.java

public static void printMap(Map<String, String> map) {
    Set<Map.Entry<String, String>> s = map.entrySet();
    Iterator<Map.Entry<String, String>> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry<String, String> entry = (Map.Entry<String, String>) it.next();
        String key = (String) entry.getKey();
        String value = (String) entry.getValue();
        System.out.println(key + " => " + value);
    }/*from  w w  w. j ava2 s .  co m*/
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static List<String> keysToList(Map<?, ?> map) {
    List<String> list = new ArrayList<String>();
    Set<?> set = map.entrySet();
    Iterator<?> iter = set.iterator();
    while (iter.hasNext()) {
        Map.Entry m = (Map.Entry) iter.next();
        list.add("" + m.getKey());
    }/*from   w  ww  .  java  2  s  .  c  o m*/
    return list;
}