Code example for ConcurrentMap

Methods: remove

    public V putIfAbsent(K key, V value) {
        return map.putIfAbsent(key, value);
    public boolean remove(Object key, Object value) {
        return map.remove(key, value);
    public boolean replace(K key, V oldValue, V newValue) {
        return map.replace(key, oldValue, newValue);
    public V replace(K key, V value) {
        return map.replace(key, value);
    public int size() { 
        return map.size();
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