18.4) Define an interface specification for the Currency Converter and Check credit rating services shown in Figure 18.7.
| Operation | Input |
Output | Exception |
|---|---|---|---|
| makeConversion | convIn currency type amount |
convOut amount of currency in type inputted |
convExcep incorrect currency type |
| lookUp |
lookIn currency type |
lookOut currency info |
lookExcep currency not found |
| compare | compIn currency type |
compOut list of exchange rates |
compExcep currency not found |
| Operation | Input |
OutPut | Exception |
|---|---|---|---|
| makeConversion | convIn currency type amount |
convOut amount of currency in type inputted |
convExcep incorrect currency type |
| lookUp |
lookIn currency type |
lookOut currency info |
lookExcep currency not found |
| compare | compIn currency type |
compOut list of exchange rates |
compExcep currency not found |