Simple differences and explanations of collection interface and collections class

Here are just a few simple comparisons, if you want more detailed information, please yourself Baidu.

1.Collection:

is the upper-level interface of the collection class. itself is a interface, which contains some basic operations of the collection.

The parent interface of the set interface and the list interface when the collection interface

The common operation inside is as follows:

2.Collections

Collections is a collection framework helper class that contains some sort, search, and serialization operations for a collection.

The most fundamental is that collections is a class oh.

The following are common operations in the collections class:

All right, let's get here first.

Simple differences and explanations of collection interface and collections class