Obtaining Object Tags (SDK for Java)

import com.obs.services.ObsClient;
import com.obs.services.exception.ObsException;
import com.obs.services.model.BucketTagInfo.TagSet;
import com.obs.services.model.ObjectTagResult;
import com.obs.services.model.ObjectTaggingRequest;
import java.util.List;
public class GetObjectTagging001 {
    public static void main(String[] args) {
        // Obtain an AK/SK pair using environment variables or import the AK/SK pair in other ways. Using hard coding may result in leakage.
        // Obtain an AK/SK pair on the management console.
        String ak = System.getenv("ACCESS_KEY_ID");
        String sk = System.getenv("SECRET_ACCESS_KEY_ID");
        // (Optional) If you are using a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage.
        // Obtain an AK/SK pair and a security token using environment variables or import them in other ways.
        String securityToken = System.getenv("SECURITY_TOKEN");
        // Enter the endpoint corresponding to the bucket. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
        String endPoint = "https://obs.ap-southeast-1.myhuaweicloud.com";
        // Obtain an endpoint using environment variables or import it in other ways.
        //String endPoint = System.getenv("ENDPOINT")
        // Create an ObsClient instance.
        try (ObsClient obsClient = new ObsClient(ak, sk, securityToken, endPoint)) {
            // Obtain object tags.
            String bucketName = "examplebucketname";
            String objectKey = "exampleObjectKey";
            String objectVersionId = "";
            ObjectTaggingRequest objectTaggingRequest =
                    new ObjectTaggingRequest(bucketName, objectKey, objectVersionId, null);
            ObjectTagResult objectTagResult = obsClient.getObjectTagging(objectTaggingRequest);
            System.out.println("tags of " + objectKey + ":");
            List<TagSet.Tag> tags = objectTagResult.getTagSet().getTags();
            for (TagSet.Tag tag : tags) {
                System.out.println("tag key:" + tag.getKey() + ", tag value:" + tag.getValue());
            }
            System.out.println("GetObjectTagging successfully");
        } catch (ObsException e) {
            System.out.println("GetObjectTagging failed");
            // Request failed. Print the HTTP status code.
            System.out.println("HTTP Code:" + e.getResponseCode());
            // Request failed. Print the server-side error code.
            System.out.println("Error Code:" + e.getErrorCode());
            // Request failed. Print the error details.
            System.out.println("Error Message:" + e.getErrorMessage());
            // Request failed. Print the request ID.
            System.out.println("Request ID:" + e.getErrorRequestId());
            System.out.println("Host ID:" + e.getErrorHostId());
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("GetObjectTagging failed");
            // Print other error information.
            e.printStackTrace();
        }
    }
}