new ? really ? this has been around since 1995
public void execute(String customerId) {
activities.sendWelcomeEmail(customerId);
try {
boolean trialPeriod = true;
while (true) {
Workflow.sleep(Duration.ofDays(30));
activities.chargeMonthlyFee(customerId);
if (trialPeriod) {
activities.sendEndOfTrialEmail(customerId);
trialPeriod = false;
} else {
activities.sendMonthlyChargeEmail(customerId);
}
}
} catch (CancellationException e) {
activities.processSubscriptionCancellation(customerId);
activities.sendSorryToSeeYouGoEmail(customerId);
}
}