A summary of the Java Collection framework

The Java Collection Framework supports the following two types of containers:

1. One is to store an element collection, referred to as a collection (collection).
2. The other is to store key/value pairs, called graphs (map).

• Collection (Extended Collection Interface):

1. Set: Stores a set of non-repeating elements;
   • Hash set HashSet
   • Chained hash set Linkedhashset: Supports ordering elements within a rule set
   • The tree set Treeset:sortedset is a sub-interface of set, and she can ensure that the elements in the ruleset are ordered. TreeSet implements a specific class for the SortedSet interface. As long as the objects can be compared to each other , you can add them to a tree set.
2. List: Stores an ordered set of elements;
3. Queue: Used to store objects processed in FIFO mode;

A summary of the Java Collection framework