Calculate Average of Three Variables Using Classes in Java Example

import java.io.*; 
 class avg 
 { 
             int a,b,c; 
             float d; 
             void setdata(int x,int y,int z) 
             { 
                         a=x; 
                         b=y; 
                         c=z; 
             } 
             void average() 
             { 
                         d=(float)(a+b+c)/3; 
                         System.out.println("Average of three variables is "+d); 
             } 
 }; 
 class AverageThreeVariables 
 { 
             public static void main (String args[]) 
             throws IOException 
             { 
                         BufferedReader g=new BufferedReader(new InputStreamReader(System.in)); 
                         String h; 
                         int p,q,r; 
                         avg k=new avg(); 
                         System.out.println("Enter Three Numerical Values"); 
                         h=g.readLine(); 
                         p=Integer.parseInt(h); 
                         h=g.readLine(); 
                         q=Integer.parseInt(h); 
                         h=g.readLine(); 
                         r=Integer.parseInt(h); 
                         k.setdata(p,q,r); 
                         k.average(); 
             } 
 };