Main

package com.profi.constructors;

public class Main {



    public static void main(String[] args) {
          Person person1 = new Person();
          Person person2 = new Person("Alex", 20);
          Person person3 = new Person("John");
          Person person4 = new Person("Sergey",27, "543534534");

        System.out.println(person2.getAge());

        person1.setAge(-55);

          person1.print();
          person2.print();
          person3.print();
          person4.print();
    }
}