介绍/* *
,* Created by Miracle Luna 提醒2020/1/11
,*/public class Poet {
private 才能;String 名称;
private 才能;Double 分数;
public 才能;诗人(名称、String Double 分数),{
,,,this.name =,名称;
,,,this.score =,分数;
,,}
public 才能;String getName (), {
,,,return 名称;
,,}
public 才能;void setName (String 名称),{
,,,this.name =,名称;
,,}
public 才能;Double getScore (), {
,,,return 分数;
,,}
public 才能;void setScore (Double 分数),{
,,,this.score =,分数;
,,}
@Override才能
public 才能;String toString (), {
,,,return “诗人{“+
,,,,,,,“name=& # 39;“, +, name +, & # 39; \ & # 39; & # 39; +
,,,,,,,,,,分数=?+,score +
,,,,,,,& # 39;}& # 39;;
,,}
} import java.util.ArrayList;
import java.util.Comparator;
import 并不知道;/* *
,* Created by Miracle Luna 提醒2020/1/11
,*/public class PoetSort {
public 才能;static void main (String [], args), {
,,,List, poetList =, new ArrayList ();
,,,Poet poet1 =, new 诗人(“杨炯,,,94.0);
,,,poetList.add (poet1);
,,,Poet poet2 =, new 诗人(“卢照邻“,,92.5);
,,,poetList.add (poet2);
,,,Poet poet3 =, new 诗人(“骆宾王“,,95.0);
,,,poetList.add (poet3);
,,,Poet poet4 =, new 诗人(“王勃,,,99.5);
,,,poetList.add (poet4);
,,,//,初始顺序
,,,System.out.println(“==祝辞,初始顺序如下:“);
,,,poetList.forEach (poet →, System.out.println (poet.toString ()));
,,,//,按照分数排名(从高到低)
,,,poetList.sort (new Comparator< Poet> (), {
,,,,@Override
,,,,,public int 比较(Poet poet1, Poet poet2), {
,,,,,,,Double score1 =, poet1.getScore ();
,,,,,,,Double score2 =, poet2.getScore ();
,,,,,,,return score2.compareTo (score1);
,,,,,}
,,,});
,,,System.out.println (“\ n==祝辞,按照分数排名(从高到低)如下:“);
,,,poetList.forEach (poet →, System.out.println (poet.toString ()));
,,,//,按照分数排名(从低到高)
,,,poetList.sort (new Comparator< Poet> (), {
,,,,@Override
,,,,,public int 比较(Poet poet1, Poet poet2), {
,,,,,,,Double score1 =, poet1.getScore ();
,,,,,,,Double score2 =, poet2.getScore ();
,,,,,,,return score1.compareTo (score2);
,,,,,}
,,,});
,,,System.out.println (“\ n==祝辞,按照分数排名(从低到高)如下:“);
,,,poetList.forEach (poet →, System.out.println (poet.toString ()));
,,}
} ==祝辞,初始顺序如下:
诗人{name=& # 39;杨炯& # 39;,,分数=94.0}
诗人{name=& # 39;卢照邻& # 39;,,分数=92.5}
诗人{name=& # 39;骆宾王& # 39;,,分数=95.0}
诗人{name=& # 39;王勃& # 39;,,分数=99.5}==祝辞,按照分数排名(从高到低)如下:
诗人{name=& # 39;王勃& # 39;,,分数=99.5}
诗人{name=& # 39;骆宾王& # 39;,,分数=95.0}
诗人{name=& # 39;杨炯& # 39;,,分数=94.0}
诗人{name=& # 39;卢照邻& # 39;,,分数=92.5}==祝辞,按照分数排名(从低到高)如下:
诗人{name=& # 39;卢照邻& # 39;,,分数=92.5}
诗人{name=& # 39;杨炯& # 39;,,分数=94.0}
诗人{name=& # 39;骆宾王& # 39;,,分数=95.0}
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这篇文章给大家分享的是有关Java实现对象列表排序的案例的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
按照对象中的某个属性,对对象列表进行排序。
以初唐四杰的成绩排名为例,对诗人进行排序。
Java实现如下:
1,诗人(诗人)类结构,定义如下:
2,诗人按照成绩排名、代码如下:
3,运行结果如下:
