Code example for ConcurrentMap

Methods: keySet

0
        return cache.remove(key);
    } 
 
    @Override 
    public Set<KeyT> keySet() {
        return cache.keySet();
    } 
 
    @Override 
    public Set<Map.Entry<KeyT, ValT>> entrySet() {
        return cache.entrySet();
    } 
 
    @Override 
    public synchronized int size() { 
        return cache.size();
    } 
 
    @Override 
    public synchronized boolean isEmpty() { 
        return cache.isEmpty();