Collection interface implementation class of Java and classification of Java container

This article introduces the relevant knowledge of "Java collection interface implementation class and Java container classification". In the actual case operation process, many people will encounter such a dilemma, then let the editor lead you to learn how to deal with these situations! I hope you can read it carefully and be able to achieve something!

Java collection

The root interface of the Java collection is Collection, which inherits the iterative interface Iterable

List interface and Set interface inherit Collection interface

The Map interface is an independent interface and does not inherit the Collection interface

The common implementation classes of List interface are: ArrayList, LinkedList, Vector

The common implementation classes of Set interface are: HashSet, LinkedHashSet, TreeSet

The common implementation classes of Map interface are: HashMap, HashTable, TreeMap

Java containers can be divided into two main categories:

Collection

List

ArrayList

LinkedList

Vector (understood, obsolete)

Set

HashSet

LinkedHashSet

TreeSet

Map

HashMap

LinkedHashMap

TreeMap

ConcurrentHashMap

Hashtable (understand, out of date)

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