Java synchronization containers and concurrent containers

synchronization container (not thread-safe for iterative read and write under concurrency)

• Vector, Stack, HashTable

• Classes created by static factory methods of the collections class (such as Collections.synchronizedlist)

• Implemented synchronously with all public methods of the container plus synchronzied (poor performance in concurrency)

  JDK 1.5 new concurrent container (thread safe)

• Concurrenthashmap (instead of map, internal use of segment structure, two times to locate the hash, write only to segment locking)

• Copyonwritearraylist (Copyonwrite writes a new copy, modifies it on the new one, and then points the reference to the new. Can only achieve the final consistency of the data, not real-time consistent, instead of list, for the reading operation of the main case)

• Concurrentlinkedqueue (the difference between a queue and a list is that the queue can only manipulate data in the header and tail pairs)

• Priorityqueue (non-concurrent)

• Blockingqueue

• The two most common concurrent containers are concurrenthashmap and copyonwritearraylist

Reference: http://blog.csdn.net/basycia/article/details/52059732

Java synchronization containers and concurrent containers