자바. 두수곱 합 차

import java.io.*;

public class Ha
{
    public static void main (String[] args)throws IOException
   {
     BufferedReader in= new BufferedReader(new InputStreamReader(System.in));
     String a,b;
     int c,d;
     
     System.out.print("첫번째 숫자 = ");
     a = in.readLine();
     System.out.print("두번째 숫자 = ");
     b = in.readLine();
     
     c = Integer.parseInt(a);
     d = Integer.parseInt(b);
     
     System.out.println();
     System.out.println("두수합:"+(c+d));
     System.out.println("두수곱:"+(c*d));
     System.out.println("두수차:"+(c-d));
     System.out.println("두수몫:"+(c/d));
 
   }
}