java面向对象 重载、this

package com.edu.person;

public class persontest {
	public static void main(String[] args) {
		Person p1 = new Person("Tom", "man", 20, true);
		Person p2 =new Person("Jack");
		System.out.println(p1.name);
		System.out.println(p1.sex);
		System.out.println(p1.married);
		System.out.println(p2.name);
		System.out.println(p2.sex);
		System.out.println(p2.married);
	}
}
class Person{
	String name;
	String sex;
	int age;
	boolean married;
	
	public Person(String name,String sex,int age,boolean married) {
		this.name=name;
		this.sex=sex;
		this.age=age;
		this.married=married;
	}
	public Person(String name,String sex,int age) {
		this(name, sex, age, false);
	}
	public Person(String name) {
		this(name,"women",12);
	}
	public Person() {
		this("alex");
	}
}