import java.rmi.*;
import java.rmi.server.*;

public class rational extends UnicastRemoteObject implements rrat
{
    public int n;
    public int d = 1;

    public rational(int a, int b) throws RemoteException
    {  super();
       int g = gcd(a,b);
       n = a/g;  
       if (n!=0) d=b/g; 
    }

    public int getn() { return n; }
    public int getd() { return d; }
    public void setn(int x) { n=x; }
    public void setd(int x) { if (x!=0) d=x; }

    private static int gcd(int a, int b)
    { if (a==0) return b; else return gcd(b%a,a); }

    public boolean eqr(rrat r)
    {   boolean answer = false;
	try {
	    answer = n*r.getd() == d*r.getn(); 
	} catch (java.rmi.RemoteException rre) {rre.printStackTrace();}
	return answer;
    }

    public void invert()
    { int t = n;  n = d; d = t; }

    public String toStr() { return n+"/"+d; }

    public void change(bigobject b)
    {
	//	n += b.x;   // works!
	b.x += 1;           // doesn't change anything!
    }

    public rrat make(String newrat, int n, int d)
    {   rational nr = null;
	try 
	{
           nr = new rational(n,d);
	   Naming.rebind(newrat,nr);
	} catch (Exception ee1) {ee1.printStackTrace();}
	return nr;
    }  // make

    public static void main(String[] args)
    {   rational r1, r2;
        try
            {
                r1 = new rational(1,2);
		r2 = new rational(3,6);
                Naming.rebind("rat1",r1);
		Naming.rebind("rat2",r2);
            }
            catch (Exception ee) {ee.printStackTrace();}
    } // main

} // rational