CONTRUCTOR or ABSTRACT CLASS for WEIGHT

Wieght Constractor with Paramaters

CONSTRACTOR:

public class Weight1 {
    double zkg;
    double yg;
    double akg;
    double sg;    
    Weight1(double z, double y, double a, double s){
        zkg=z;
        yg=y;
        akg=a;
        sg=s;
}


MAIN CLASS:

import java.util.Scanner;
public class Weight {
    public static void main (String[]args){
    Weight1 r1=new Weight1(0.453592, 453.59237, 0.02834952, 28.34952);
       Scanner wieghtconverter = new Scanner(System.in);
       System.out.println("Coverter \n Select to convert? \n 1 Pound \n 2 Ounce");
       double m1=wieghtconverter.nextInt();
     
       if(m1==1){
           System.out.println("Enter number in pounds: ");
           double pounds=wieghtconverter.nextInt();
         
           double poundskg=pounds*r1.zkg;
           double poundsg=pounds*r1.yg;
           System.out.println("Kilograms: "+poundskg);
           System.out.println("grams: "+poundsg);
    }
        else{
           System.out.println("Enter number in ounce.");
           double ounce=wieghtconverter.nextInt();
         
           double ouncekg=ounce*r1.akg;
           double ounceg=ounce*r1.sg;
           System.out.println("Kilograms: "+ouncekg);
           System.out.println("grams: "+ounceg);
    }
     

}
}