Example usage for java.util Map entrySet

Introduction

In this page you can find the example usage for java.util Map entrySet.

Prototype

Set<Map.Entry<K, V>> entrySet();

Source Link

Document

Returns a Set view of the mappings contained in this map.

Usage

From source file:Main.java

public static String MapToUrl(Map<?, ?> data) {
    StringBuffer queryString = new StringBuffer();
    for (Map.Entry<?, ?> pair : data.entrySet()) {
        queryString.append(pair.getKey() + "=");
        queryString.append(pair.getValue() + "&");
    }//from  w ww  . j  a v  a 2  s  .  co m
    if (queryString.length() > 0) {
        queryString.deleteCharAt(queryString.length() - 1);
    }
    return queryString.toString();
}

From source file:Main.java

public static <K, G> Map<K, G> reverseMap(Map<String, K> keyIdMap, Map<String, G> keyValueMap) {
    Map<K, G> ret = new HashMap<K, G>();
    for (Entry<String, G> entry : keyValueMap.entrySet()) {
        K id = keyIdMap.get(entry.getKey());
        ret.put(id, entry.getValue());/*from  w w w.j  a  v a2 s  .com*/
    }
    return ret;
}

From source file:Main.java

public static <T extends Comparable> List<Entry<String, T>> sortMapDesc(Map<String, T> keywordMap) {
    List<Entry<String, T>> arrayList = new ArrayList<Entry<String, T>>(keywordMap.entrySet());
    Collections.sort(arrayList, new Comparator<Entry<String, T>>() {

        @Override//w  w  w .  ja  v a 2 s  .  c  o  m
        public int compare(Entry<String, T> e1, Entry<String, T> e2) {
            return (e2.getValue()).compareTo(e1.getValue());
        }
    });
    return arrayList;
}

From source file:Main.java

public static <T extends Comparable> List<Entry<String, T>> sortMapAsc(Map<String, T> keywordMap) {
    List<Entry<String, T>> arrayList = new ArrayList<Entry<String, T>>(keywordMap.entrySet());
    Collections.sort(arrayList, new Comparator<Entry<String, T>>() {

        @Override/*from  w  ww  . j a va 2 s .c o m*/
        public int compare(Entry<String, T> e1, Entry<String, T> e2) {
            return (e1.getValue()).compareTo(e2.getValue());
        }
    });
    return arrayList;
}

From source file:Main.java

/**
 *  //  ww w .  j a v a 2 s  .c o m
 * @param vehiclesMap
 */
public static void print(Map<String, List<String>> map) {
    for (Iterator<Entry<String, List<String>>> iterator = map.entrySet().iterator(); iterator.hasNext();) {
        Map.Entry<String, List<String>> entry = (Map.Entry<String, List<String>>) iterator.next();
        String key = entry.getKey();
        List<String> values = entry.getValue();

        System.out.println(key);

        for (String string : values) {
            System.out.println("\t" + string);
        }
    }

    //      System.out.println("Lista: " + vehicles.size());
}

From source file:Main.java

public static String serializeAttributes(Map<String, String> attributes) {
    String serialization = "";
    for (Entry<String, String> entry : attributes.entrySet()) {
        serialization = concatKeyValue(serialization, entry.getKey(), entry.getValue());
    }/*from   w w w.j a  va2 s .  c  o  m*/
    return serialization;
}

From source file:Main.java

/**
 * Sorts a Map by it's value/*  w  w w .j a  va2  s. c  om*/
 *
 * @param map Map
 * @param <K> Key
 * @param <V> Value
 * @return The sorted map
 */
public static <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
    Map<K, V> result = new LinkedHashMap<>();
    Stream<Map.Entry<K, V>> st = map.entrySet().stream();

    st.sorted(Comparator.comparing(Map.Entry::getValue))
            .forEachOrdered(e -> result.put(e.getKey(), e.getValue()));

    return result;
}

From source file:Main.java

public static <T extends Object> List<T> map2list(Map<String, T> maps) {
    List<T> list = new ArrayList<T>();
    Iterator<Entry<String, T>> iterator = maps.entrySet().iterator();
    while (iterator.hasNext()) {
        Entry<String, T> entry = iterator.next();
        list.add(entry.getValue());/* w w w  .j  a v a 2 s  . c  om*/
    }
    return list;
}

From source file:Main.java

public final static <K, V> String keyJoin(Map<K, V> map, String separator) {
    StringBuilder sb = new StringBuilder();
    for (Map.Entry<K, V> entry : map.entrySet()) {
        sb.append(String.valueOf(entry.getKey())).append(separator);
    }//from   ww w  .j  a va  2 s.co  m
    return sb.toString().substring(0, sb.toString().length() - separator.length());
}

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());
    }// ww  w.j a v  a2  s  . co  m
    return nhm;
}