java - How to add a new card to an existing customer with Stripe - Stack Overflow

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I used test token to chose what type of card I want. Got the token name from stripe-docs.

import com.stripe.Stripe;
import com.stripe.exception.StripeException;
import com.stripe.model.Card;
import com.stripe.model.Customer;
import java.util.HashMap;
import java.util.Map;

public class StripeExample {
    public static void main(String[] args) throws StripeException {
        final String API_KEY = System.getenv("STRIPE_API_KEY"); 
        assert API_KEY != null : "API_KEY SHOULD NOT BE NULL";

        Stripe.apiKey = API_KEY;

        // Retrieve the existing customer by ID
        Customer customer = Customer.retrieve(customerID);

        // Use a Stripe test token instead of raw card details
        String testToken = "tok_visa"; // Simulates a Visa card

        // Attach the test card to the customer
        Map<String, Object> sourceParams = new HashMap<>();
        sourceParams.put("source", testToken);

        Card card = (Card) customer.getSources().create(sourceParams);
        System.out.println("Card added successfully: " + card.getId());
    }
}

I get

null
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "com.stripe.model.PaymentSourceCollection.create(java.util.Map)" because the return value of "com.stripe.model.Customer.getSources()" is null
    at .example.Application.main(Application.java:82)

I tried to add a card but insted of getting the card ID I get that the sources of the customer are null

I used test token to chose what type of card I want. Got the token name from stripe-docs.

import com.stripe.Stripe;
import com.stripe.exception.StripeException;
import com.stripe.model.Card;
import com.stripe.model.Customer;
import java.util.HashMap;
import java.util.Map;

public class StripeExample {
    public static void main(String[] args) throws StripeException {
        final String API_KEY = System.getenv("STRIPE_API_KEY"); 
        assert API_KEY != null : "API_KEY SHOULD NOT BE NULL";

        Stripe.apiKey = API_KEY;

        // Retrieve the existing customer by ID
        Customer customer = Customer.retrieve(customerID);

        // Use a Stripe test token instead of raw card details
        String testToken = "tok_visa"; // Simulates a Visa card

        // Attach the test card to the customer
        Map<String, Object> sourceParams = new HashMap<>();
        sourceParams.put("source", testToken);

        Card card = (Card) customer.getSources().create(sourceParams);
        System.out.println("Card added successfully: " + card.getId());
    }
}

I get

null
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "com.stripe.model.PaymentSourceCollection.create(java.util.Map)" because the return value of "com.stripe.model.Customer.getSources()" is null
    at .example.Application.main(Application.java:82)

I tried to add a card but insted of getting the card ID I get that the sources of the customer are null

• java
• stripe-payments
• card
• custom-errors

Share Improve this question Follow asked Mar 16 at 20:01 Marius CarchilanMarius Carchilan 1311 silver badge66 bronze badges

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1 Answer 1

Sorted by: Reset to default 0

You can list a customer's payment methods, sources, or tokens using this API instead : https://docs.stripe/api/payment_methods/customer_list?lang=java

Customer customer = Customer.retrieve(customerID);
CustomerListPaymentMethodsParams params =
  CustomerListPaymentMethodsParams.builder().setLimit(3L).build();
PaymentMethodCollection paymentMethods = customer.listPaymentMethods(params);

Note though that Tokens are considered deprecated at this point. You really shouldn't be using them anymore. Instead, you should switch to the latest APIs like PaymentIntents, SetupIntents, and PaymentMethods. I recommend referring to the online payment guides that Stripe has on their site to choose an appropriate integration flow that meets your needs : https://docs.stripe/payments/online-payments

Some other guides that may be helpful :

• https://docs.stripe/payments/save-and-reuse

• https://docs.stripe/payments/save-during-payment

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