Hashmap capacity, load factor and fail-fast

Capacity :

•     Capacity is the Number of element HashMap can contain. 
•     initial capacity is the capacity at the time the hash table is created 
•     default initial capacity (16) 
•     capacity increased (2 power n) , where n- number of elements

load factor :

• Defines threshold of HashMap. When re-sizing will occur of HashMap.
• The load factor is a measure of how full the hash table is allowed to get before its capacity is automatically increased.
• default load factor (.75)

fail-fast :

• The iterators returned by all of this class's are fail-fast
•  After the iterator is created, if the map is modified at any time it will throw a ConcurrentModificationException