Java SDK

<dependency>
  <groupId>com.orsunpay</groupId>
  <artifactId>orsunpay-java</artifactId>
  <version>0.1.0</version>
</dependency>

import com.orsunpay.OrsunPay;
import java.net.URI;

class MerchantPayments {
    private final OrsunPay client = new OrsunPay(
        System.getenv("ORSUNPAY_API_KEY"),
        System.getenv("ORSUNPAY_MERCHANT_ID"),
        URI.create(System.getenv("ORSUNPAY_API_BASE_URL"))
    );

    String statusFor(String orderId) {
        return client.getPaymentByOrder(orderId)
            .data().path("transaction").path("status").asText();
    }
}