Write a program to calculate the sum of n rational numbers using array of objects

import java.io.*;

class rational25

{

int num;

int den;

public void input()

throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter the numerator");

num=Integer.parseInt(br.readLine());

System.out.println("enter the numerator");

den=Integer.parseInt(br.readLine());

}

public void hcf()

{

int temp=0;

if(num<den)

temp=num;

else

temp=den;

while(temp>=2)

{

if(num%temp==0&&den%temp==0)

{

num=num/temp;

den=den/temp;

}

temp--;

}

System.out.println(num+"/"+den);

}

public void sum(rational25 c[])

{

num=c[0].num;

den=c[0].den;

for(int i=1;i<c.length;i++)

{

num=num*c[i].den+den*c[i].num;

den=den*c[i].den;

}

}

}

class rational25main

{

public static void main(String[] arg)

throws IOException

{

int n=0;

rational25 s=new rational25();

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter the number of rational numbers");

n=Integer.parseInt(br.readLine());

rational25[] c=new rational25[n];

for(int i=0;i<n;i++)

{

c[i]=new rational25();

c[i].input();

}

s.sum(c);

s.hcf();

}

}