The collation of the following collection classes in Java

I have seen some of the contents of the Java Collection class before, but after a while not some forget, now tidy up later to see also convenient, just for yourself as notes to see ~ ~ ~

(Reproduced some annotated: http://www.cnblogs.com/leeplogs/p/5891861.html)

In general, the collection classes that we use often have these kinds:

List structure Collection class: ArrayList class, LinkedList class, Vector class, Stack class

The collection class of the map structure: HashMap class, Hashtable class

Set structure of the Set class: HashSet class, TreeSet class

A collection of queue structures: Queue interface

First of all, let's see why we want to use the collection class, which is about the relationship between the collection class and the array. An array (which can store the base data type) is a container for storing objects, but the length of the array is fixed and not suitable for use when the number of objects is unknown.

The length of the collection (objects can only be stored and object types may be different) is variable and can be used in most cases. The bottom of the collection, is how to achieve variable length, here we come back to analyze, ...

Java Collection Framework diagram visible

The collation of the following collection classes in Java