Arrays.sort() method and Comparable interface

import java.util.Arrays;
import java.util.Date;

public class ArraySortMethord {
    
    
    public static void main(String[] args) {
    
    
//        String data[]=new String[]{"A","c","C","D"};
//        Arrays.sort(data);
//        Integer data1[]=new Integer[]{7,6,54,3,2,4245,56};
//        System.out.println(Arrays.toString(data));
//        Arrays.sort(data1);
//        System.out.println(Arrays.toString(data1));
        Person person[]=new Person[]{
    
    
                new Person("xiaoqiangA",21),
                new Person("xiaoqiangB",32),
                new Person("xiaoqiangC",90)
        };
        Arrays.sort(person);
        System.out.println(Arrays.toString(person));
    }


}
class Person implements Comparable<Person>{
    
    
    private String name;
    private int age;

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

    public String getName() {
    
    
        return name;
    }

    public int getAge() {
    
    
        return age;
    }
    @Override
    public int compareTo(Person o) {
    
    
        return this.getAge()-o.getAge();
    }
    @Override
    public String toString() {
    
    
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}