// CalculoImpl.java

public class CalculoImpl extends Calculadora.CalculoPOA
{
    public CalculoImpl() 
    {
    }

    public String soma(float val1, float val2)
    {
        return Float.toString(val1 + val2);
    }

    public String subtrai(float val1, float val2)
    {
        return Float.toString(val1 - val2);
    }

    public String multiplica(float val1, float val2)
    {
        return Float.toString(val1 * val2);
    }

    public String divide(float val1, float val2)
    {
        return Float.toString(val1 / val2);
    }
}