Example usage for java.util Map get

Introduction

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

Prototype

V get(Object key);

Source Link

Document

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Usage

From source file:Main.java

private static int getInt(Map<String, Object> data, String key) {
    return (int) (long) (Long) data.get(key);
}

From source file:org.grails.datastore.mapping.config.utils.ConfigUtils.java

public static <T> T read(Class<T> type, String key, Map<String, String> config, T defaultValue) {
    String value = config.get(key);
    return value == null ? defaultValue : converter.convertIfNecessary(value, type);
}

From source file:Main.java

public static final Object get(Object key) {
    Map<Object, Object> cache = LOCAL_CACHE.get();
    return cache == null ? null : cache.get(key);
}

From source file:Main.java

/**
 * Adds the value to map. If the key does not exists new value list is created and the value is
 * added to it/*  www. j  a va2 s.c  om*/
 * 
 * @param <K>
 *            the key type
 * @param <V>
 *            the value type
 * @param map
 *            the map
 * @param key
 *            the key
 * @param newValue
 *            the new value
 */
public static <K, V> void addValueToMap(Map<K, List<V>> map, K key, V newValue) {
    List<V> list = map.get(key);
    if (list == null) {
        list = new LinkedList<V>();
        map.put(key, list);
    }
    list.add(newValue);
}

From source file:Main.java

public static <K1, K2, V> Map<K2, V> mkMap(Map<K1, Map<K2, V>> multiMap, K1 key) {
    Map<K2, V> map = multiMap.get(key);
    if (map == null) {
        map = new HashMap<>();
        multiMap.put(key, map);//from  w  w  w.  ja va 2s . c  o  m
    }
    return map;
}

From source file:Main.java

public static List<Map<String, String>> searchFromAccNumber(List<Map<String, String>> orders, String acc) {
    List<Map<String, String>> result = new ArrayList<Map<String, String>>();
    if (acc != null) {
        for (Map<String, String> o : orders) {
            if (acc.equalsIgnoreCase(o.get("accountNumber"))) {
                result.add(o);//www  .ja v  a  2s. c o  m
            }
        }
    }
    return result;
}

From source file:Main.java

public static void addIntPair(Map map, Object key, int value1, int value2) {
    Object o = map.get(key);
    List pair;/*from w w  w .  ja v a  2  s . c o  m*/
    if (o == null) {
        pair = new ArrayList();
        pair.add(new Integer(value1));
        pair.add(new Integer(value2));
        map.put(key, pair);
    } else {
        pair = (List) o;
        List newPair = new ArrayList();
        int new1 = ((Integer) pair.get(0)).intValue() + value1;
        int new2 = ((Integer) pair.get(1)).intValue() + value2;
        newPair.add(new Integer(new1));
        newPair.add(new Integer(new2));
        map.put(key, newPair);
    }
}

From source file:Main.java

/**
 * @param <K>//w  ww . ja  v a2s  .co m
 * @param <V>
 * @param aMap
 * @param aKey
 * @param aValue
 * @return {@link List} to which value was added
 */
public static <K, V> List<V> addToValueList(Map<K, List<V>> aMap, K aKey, V aValue) {
    List<V> valueList = aMap.get(aKey);
    if (valueList == null) {
        valueList = new ArrayList<>();
        aMap.put(aKey, valueList);
    }

    valueList.add(aValue);
    return valueList;
}

From source file:Main.java

public static <K, V> V getOrAdd(Map<K, V> map, K key, Supplier<V> constructor) {
    V value = map.get(key);
    if (value == null) {
        value = constructor.get();//w  ww  .j av  a2s.c om
        map.put(key, value);
    }
    return value;
}

From source file:Main.java

/**
 * Returns String from a map of string of set of string.
 *
 * @param map Map of string of set of string.
 * @param name Key of the map entry./*from  ww w . j  a v a  2s.  co  m*/
 * @return String from a map of string of set of string
 */
public static String getMapAttr(Map map, String name) {
    Set s = (Set) map.get(name);
    String retVal = ((s == null) || s.isEmpty()) ? null : ((String) s.iterator().next());
    return (retVal != null) ? retVal.trim() : null;
}