public ConcurrentReaderHashMap(Map t){
  this(Math.max((int)(t.size() / DEFAULT_LOAD_FACTOR) + 1,16),DEFAULT_LOAD_FACTOR);
  putAll(t);
}

public ConcurrentReaderHashMap ( Map t ) { this ( Math . max ( ( int ) ( t . size ( ) / DEFAULT_LOAD_FACTOR ) + 1 , 16 ) , DEFAULT_LOAD_FACTOR ) ; putAll ( t ) ; }
constructs a new map with the same mappings as the given map . the map is created with a capacity of twice the number of mappings in the given map or 16 ( whichever is greater ) , and a default load factor .
