1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/task2/solution03/src/org/apidesign/apifest08/currency/Convertor.java	Wed Oct 01 10:43:05 2008 +0200
     1.3 @@ -0,0 +1,41 @@
     1.4 +package org.apidesign.apifest08.currency;
     1.5 +
     1.6 +/** This is the skeleton class for your API. You need to make it public, so
     1.7 + * it is accessible to your client code (currently in Task1Test.java) file.
     1.8 + * <p>
     1.9 + * Feel free to create additional classes or rename this one, just keep all
    1.10 + * the API and its implementation in this package. Do not spread it outside
    1.11 + * to other packages.
    1.12 + */
    1.13 +public class Convertor {
    1.14 +
    1.15 +    public static final int FIRST_TO_SECOND = 1;
    1.16 +
    1.17 +    public static final int SECOND_TO_FIRST = 2;
    1.18 +
    1.19 +    private double first;
    1.20 +
    1.21 +    private double second;
    1.22 +
    1.23 +    public Convertor(double first, double second) {
    1.24 +        this.first = first;
    1.25 +        this.second = second;
    1.26 +    }
    1.27 +
    1.28 +    public double convertFirstToSecond(double value) {
    1.29 +        return (second / first) * value;
    1.30 +    }
    1.31 +
    1.32 +    public double convertSecondToFirst(double value) {
    1.33 +        return (first / second) * value;
    1.34 +    }
    1.35 +
    1.36 +    public double convert(double value, int typeOfConvert) {
    1.37 +        if (FIRST_TO_SECOND == typeOfConvert) {
    1.38 +            return convertFirstToSecond(value);
    1.39 +        } else if (SECOND_TO_FIRST == typeOfConvert) {
    1.40 +            return convertSecondToFirst(value);
    1.41 +        }
    1.42 +        throw new IllegalArgumentException("Unkown type of convert.");
    1.43 +    }
    1.44 +}