JDK8 排序

最新推荐文章于 2024-01-30 21:59:26 发布

转载最新推荐文章于 2024-01-30 21:59:26 发布 · 113 阅读

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原文链接：https://my.oschina.net/leichunyuan/blog/1831825

文章标签：

#java #python

2019独角兽企业重金招聘Python工程师标准>>>

import java.util.Collections;
import java.util.List;
import java.util.ArrayList;
import java.util.Comparator;

  public class JavaTest {
    public static void main(String args[]){
         List<String> names2 = new ArrayList<String>();
        names2.add("Taobaoa ");
        names2.add("Taobaoc ");
        names2.add("Taobaob ");

        JavaTest tester = new JavaTest();
        tester.sortUsingJava8(names2);
        System.out.println(names2);
       
        Person p1 = new Person();
        p1.setName("hhh");

        Person p2 = new Person();
        p2.setName("bbb");

        List<Person> list = new ArrayList<Person>();
        list.add(p1);
        list.add(p2);
        tester.sortUsingJava82(list);
        System.out.println(list);

    }

    // 使用 java 7 排序
    private void sortUsingJava7(List<String> names){
        Collections.sort(names, new Comparator<String>() {
            @Override
            public int compare(String s1, String s2) {
                return s2.compareTo(s1);
            }
        });
    }

    // 使用 java 8 排序
    private void sortUsingJava8(List<String> names){
        Collections.sort(names, (s1, s2) -> s1.compareTo(s2));
    }
     
    private void sortUsingJava82(List<Person> list){
         Collections.sort(list, (s1, s2) -> s1.getName().compareTo(s2.getName()));
    }
}

/**
 * @author lcy
 * @DATE 2018/5/23
 */
public class Person {
    private String name;
    private String homeAddress;
    private  Integer age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }


    public String getHomeAddress() {
        return homeAddress;
    }

    public void setHomeAddress(String homeAddress) {
        this.homeAddress = homeAddress;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", homeAddress='" + homeAddress + '\'' +
                ", age=" + age +
                '}';
    }
}

转载于:https://my.oschina.net/leichunyuan/blog/1831825