//INTERFACE package br.alura.interfaces;
public interface ConversaoFinanceira {
double converterDolarParaReal(double dolar);
}
//CLASSE CONVERSOR
package br.alura;
import br.alura.interfaces.ConversaoFinanceira;
public class ConversorMoeda implements ConversaoFinanceira {
public double cotacao = 5.45;
@Override
public double converterDolarParaReal(double dolar) {
return dolar * cotacao;
}
}
//MAIN
import br.alura.ConversorMoeda;
public class Main { public static void main(String[] args) {
ConversorMoeda conversorMoeda = new ConversorMoeda();
System.out.println(conversorMoeda.converterDolarParaReal(4));
}
}
