public class SimlpePerson
{
	private String name;
	private int age;
	public Person(String name, int age) {

       this.name = name;
       this.age = age;
   }
   public Person(String name) {
       this(name,0);
   }
   public Person(int age) {
       this("unknown",age);
   }
   public Person() {
       this("unknown",0);
   }
   public void print(){
       System.out.println("Person's Name: " + name + " " + "Age: "+ age);
   }
   public static void main(String[] args) {

       Person p1 = new Person();
       p1.print();

       Person p2 = new Person("Rahul", 20);
       p2.print();

       Person p3 = new Person(10);
       p3.print();

   }

}