public class Suma {
    
public static void main(String [] args) throws IOException
{
BufferedReader in=new BufferedReader(new InputStreamReader (System.in));

int num1;
int num2;
int suma;
int indice=1;

System.out.println("Escribe un numero para sumar: ");
num1= Integer.valueOf(in.readLine().trim()).intValue();

System.out.println("Escribe otro numero para sumar: ");
num2= Integer.valueOf(in.readLine().trim()).intValue();

suma= num1+num2;
System.out.println(indice+" suma = "+suma);

for (indice=2; suma>0; indice++)
    {
        System.out.println("Escribe otro numero para sumar: ");
        num2= Integer.valueOf(in.readLine().trim()).intValue();
        suma+=num2;
        System.out.println(indice+" sumas = "+suma);
    }
	
}
}