In the SampleCode.java, while displaying the options for choosing which sample code to run (Code Sample Names), the displayed options are:
DecryptVisaCheckoutData
CreateVisaCheckoutTransaction

However, in the switch case the case operands are named differently.
case "VisaCheckoutDecrypt":
DecryptVisaCheckoutData.run(apiLoginId, transactionKey);
break;
case "VisaCheckoutTransaction":
CreateVisaCheckoutTransaction.run(apiLoginId, transactionKey);
break;

This causes both these sample code to never run from the SampleCode.java.