Java笔记12：Java对象排序

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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

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