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This article mainly explains the "list collection how to sort by an attribute of the element", the content of the explanation in the article is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "list collection how to sort by a certain attribute of the element" bar!

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Import java.util.ArrayList

Import java.util.Collections

Import java.util.Comparator

Import java.util.HashMap

Import java.util.List

Import java.util.Map

/ * *

* ClassName: Sort

* @ Description: the list collection is sorted by an attribute of the element

* @ author ljw

* @ date 24 May 2018

, /

Public class Sort {

Public static void main (String [] args) {

List list = new ArrayList ()

For (int I = 0; I

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