Example usage for java.util.concurrent ConcurrentHashMap ConcurrentHashMap

Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentHashMap ConcurrentHashMap.

Prototype

public ConcurrentHashMap()

Source Link

Document

Creates a new, empty map with the default initial table size (16).

Usage

From source file:Main.java

public static final <K, V> ConcurrentMap<K, V> newConcurrentMap() {
    return new ConcurrentHashMap<K, V>();
}

From source file:Main.java

public static <K, V> ConcurrentMap<K, V> createConcurrentMap() {
    return new ConcurrentHashMap<K, V>();
}

From source file:Main.java

public static <T> Set<T> newConcurentHashSet() {
    return Collections.newSetFromMap(new ConcurrentHashMap<T, Boolean>());
}

From source file:Main.java

/**
 * new concurrentHashMap// w  w  w.  j a  v  a 2s. co  m
 * 
 * @return
 */
public static <K, V> ConcurrentHashMap<K, V> newConcurrentHashMap() {
    return new ConcurrentHashMap<K, V>();
}

From source file:Main.java

public static synchronized ConcurrentHashMap<String, String> getMap() {
    if (publicDnsMap == null) {
        publicDnsMap = new ConcurrentHashMap<String, String>();
    }//from w  w  w  . j av a 2  s.  c  om
    return publicDnsMap;
}

From source file:Main.java

public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) {
    Map<Object, Boolean> seen = new ConcurrentHashMap<>();
    return t -> seen.putIfAbsent(keyExtractor.apply(t), Boolean.TRUE) == null;
}

From source file:Main.java

public static Map<String, String> getChildElementNodesMap(Node node) {
    if (node == null) {
        return null;
    }//from  w  ww.j  av  a  2  s.  c o m

    Map<String, String> map = new ConcurrentHashMap<>();
    NodeList nodeList = node.getChildNodes();
    if (nodeList != null && nodeList.getLength() > 0) {
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node item = nodeList.item(i);
            if (item != null && item.getNodeType() == Node.ELEMENT_NODE) {
                map.put(item.getNodeName(), item.getTextContent().trim());
            }
        }
    }
    return map;
}

From source file:Main.java

private static ConcurrentHashMap<String, Object> map() {
    if (_map.get() == null)
        _map.set(new ConcurrentHashMap<String, Object>());
    return _map.get();
}

From source file:Main.java

public static <K, V> ConcurrentHashMap<K, V> newConcurrentHashMap() {
    return new ConcurrentHashMap<K, V>();
}

From source file:Main.java

public static <KEY, VALUE> ConcurrentHashMap<KEY, VALUE> newConcurrentHashMap() {
    return new ConcurrentHashMap<KEY, VALUE>();
}