Stripe.apiKey = "pk_live_Azj7Cp5N098BwIUUBLSKK1Vw" ; InvoiceCreateParams params = InvoiceCreateParams .builder() .setCustomer("{{cus_D37EdbrOK3u2ro}}") .setCollectionMethod(InvoiceCreateParams.CollectionMethod.SEND_INVOICE) .setDaysUntilDue(14L) .build(); Invoice invoice = Invoice.create(params);