Code example for ConcurrentMap

Methods: entrySet

            public Iterator<Map.Entry<K, V>> iterator() {
                return new Iterator<Map.Entry<K, V>>() {
                    private final Iterator<Map.Entry<Key, V>> it = map
                    public boolean hasNext() { 
                        return it.hasNext();
                    public Map.Entry<K, V> next() {
                        return new Map.Entry<K, V>() {
                            private final Map.Entry<Key, V> en =;
                            public K getKey() { 
                                return (K) en.getKey().get();
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