this (in java)

package myinfo;

class myinfoo{
    int lenght;
    int age;

    myinfoo(int lenght,int age)
    {
        this.lenght=lenght;
        this.age =age;

    }

    myinfoo(int info)
    {
        this(info,info);
    }

    myinfoo()
    {
     this(180,50) ;
    }

    void set_age(int age)
    {
        this.age=age;
    }
    void set_lenght(int lenght)
    {
        this.lenght=lenght;
    }
    void print_myinfo()
    {
        System.out.println(lenght);
        System.out.println(age);
    }
}


public class Myinfo {


    public static void main(String[] args) {

        myinfoo info1 = new myinfoo(170,23);
        info1.print_myinfo();

        System.out.println("\n");

        myinfoo info2 = new myinfoo(170);
        info2.print_myinfo();

        System.out.println("\n");

        myinfoo info3 = new myinfoo();
        info3.print_myinfo();

    }

}