Java笔记12：Java对象排序

代码：

import java.util.Arrays;
import java.util.Comparator;

class Person {
    private String name;
    private int age;

    public int getAge() {
        return age;
    }

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

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

    public String getName() {
        return this.name;
    }

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
}

public class MyObjSort {
    public static void main(String[] args) {
        Person[] persons = {new Person("Zhang San",30), new Person("Chen Er",20), new Person("Liu Yi",10)};
        Arrays.sort (persons, new Comparator<Person>() {
            @Override
            public int compare(Person p1, Person p2) {
                if (p1.getAge() > p2.getAge()) {
                    return 1;
                } else if (p1.getAge() < p2.getAge()) {
                    return -1;
                } else {
                    return 0;
                }
            }
        });

        for(int i = 0; i < persons.length; i++) {
            System.out.println(persons[i].getName() + " " + persons[i].getAge());
        }
    }
}

 

运行结果：

Liu Yi 10

Chen Er 20

Zhang San 30