public class Main {
    public static void main(String[] args) {
        // TODO: 给Person增加构造方法:        Person ming = new Person("小明", 12);        Person a = new Person("小光");        System.out.println(ming.getName());        System.out.println(ming.getAge());        System.out.println(a.getName()+" "+a.getAge());    }
}
class Person {
    private String name;    private int age;    public Person(String name, int age) {
        this.name = name;        this.age = age;    }

    public Person(String name) {
        this(name,18);    }

    public Person() {
        this("小米");    }
    public String getName() {
        return name;    }

    public int getAge() {
        return age;    }
}