Main.java

package io.swagger.client.api;

import io.swagger.client.ApiClient;
import io.swagger.client.ApiException;
import io.swagger.client.Configuration;
import io.swagger.client.model.OrderDetails;
import io.swagger.client.model.Orders;

import java.util.List;
import java.util.stream.Collectors;

public class Main {

  public static void main(String[] args) {
    ApiClient defaultClient = Configuration.getDefaultApiClient();
    defaultClient.setApiKey("XXXXXXXXXXX");

    OrdersApi orderApiInstance = new OrdersApi(defaultClient);
    OrderDetailsApi orderDetailsApiInstance = new OrderDetailsApi(defaultClient);

    try {

      List<Orders> orders = orderApiInstance.getAllorders("","",100,0,false,"").getValue();
      List<OrderDetails> orderDetails = orderDetailsApiInstance.getAllorderDetails("","",100,0,false,"").getValue();

      for(OrderDetails orderDetail : orderDetails){

        List<Orders> order = orders.stream().filter(x -> x.getOrderId().equals(orderDetail.getOrderId())).collect(Collectors.toList());

        if(order.isEmpty())
          continue;

        System.out.println("--------------------------------------------");
        System.out.println("OrderId : " + order.get(0).getOrderId());
        System.out.println("CustomerId : " + order.get(0).getCustomerId());
        System.out.println("EmployeeId : " + order.get(0).getEmployeeId());
        System.out.println("Discount : " + orderDetail.getDiscount());
        System.out.println("ProductId : " + orderDetail.getProductId());
        System.out.println("Quantity : " + orderDetail.getQuantity());
        System.out.println("UnitPrice : " + orderDetail.getDiscount());

      }


    } catch (ApiException e) {
      System.err.println("Exception when calling CategoriesApi#createcategories");
      e.printStackTrace();
    }
  }
}