Java笔记12：Java对象排序

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());
}
}
}