How to Check if a Country is a European Union Member using Java

Most applications contain extensive validation layers to maintain high-quality data standards across all inputs. These validation layers can be used to check/verify dozens of important details that can cause significant downstream issues if they end up being wrong.

One area of particular concern includes any information regarding the modern geopolitical landscape. Within that landscape, European Union membership is a sensitive/important topic. Our Check EU Membership API provides a free & easy-to-use solution for validating if country inputs are valid European Union members or not, and in addition to that, it provides a haul of useful metadata in its response, including the input country’s two-letter ISO code, three-letter code, currency name, currency symbol, and more. Below, I’ve provided an example response model for the input Country “Ireland”:

{
  "Successful": true,
  "CountryFullName": "Ireland",
  "ISOTwoLetterCode": "IE",
  "FIPSTwoLetterCode": "EI",
  "ThreeLetterCode": "IRL",
  "IsEuropeanUnionMember": true,
  "Timezones": [],
  "ISOCurrencyCode": "EUR",
  "CurrencySymbol": "€",
  "CurrencyEnglishName": "Euro",
  "Region": "Europe",
  "Subregion": "NorthernEurope"
}

In the remainder of this article, I’ll demonstrate how you can take advantage of this API for free using complementary, ready-to-run Java code examples to structure your API call. All you’ll need in addition to these is a Cloudmersive API key to authenticate the service, which you can get for free by registering a free account on our website (several enterprise accounts are also available; free accounts come with a limit of 800 API calls per month & zero additional commitments).

Let’s jump right in and install the Validation API client with Maven. We can begin by first adding a reference to the repository in pom.xml:

<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>

Next, we can wrap up installation by adding an additional reference to the pom.xml dependency:

<dependencies>
<dependency>
    <groupId>com.github.Cloudmersive</groupId>
    <artifactId>Cloudmersive.APIClient.Java</artifactId>
    <version>v4.25</version>
</dependency>
</dependencies>

Last but not least, we can add in the imports and call the function, adding our API into the appropriate field:

// Import classes:
//import com.cloudmersive.client.invoker.ApiClient;
//import com.cloudmersive.client.invoker.ApiException;
//import com.cloudmersive.client.invoker.Configuration;
//import com.cloudmersive.client.invoker.auth.*;
//import com.cloudmersive.client.AddressApi;
ApiClient defaultClient = Configuration.getDefaultApiClient();
// Configure API key authorization: Apikey
ApiKeyAuth Apikey = (ApiKeyAuth) defaultClient.getAuthentication("Apikey");
Apikey.setApiKey("YOUR API KEY");
// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
//Apikey.setApiKeyPrefix("Token");
AddressApi apiInstance = new AddressApi();
ValidateCountryRequest input = new ValidateCountryRequest(); // ValidateCountryRequest | Input request
try {
    ValidateCountryResponse result = apiInstance.addressCheckEUMembership(input);
    System.out.println(result);
} catch (ApiException e) {
    System.err.println("Exception when calling AddressApi#addressCheckEUMembership");
    e.printStackTrace();
}

All done. When we parse our input request for this API, we’re going to want to use the following JSON format:

{
  "RawCountryInput": "string"
}