Service Account Keys - Google Translation API

In my last post, I have mentioned about Google Translation API and how to invoke the api using GCP Platform console and via Postman using API Keys. Now, we will see how to use in our Java code by using Service account keys. To use Service Account Keys, we need to install the client library. Following dependency need to add to the pom.xml file of our project,

In GCP Console when we create a service account key, a JSON file which contains the service account key will be downloaded to our computer. The next step is to add the environment variable GOOGLE_APPLICATION_CREDENTIALS to the file path of the JSON file that contains your service account key as below,

Here is a sample code to test the translation,

import com.google.cloud.translate.Translate;

import com.google.cloud.translate.Translate.TranslateOption;

import com.google.cloud.translate.TranslateOptions;

import com.google.cloud.translate.Translation;

public class TranslationApi {

            public static void main(String... args) throws Exception {

                        // Instantiates a client

                        Translate translate = TranslateOptions.getDefaultInstance()

                                                .getService();

                        String text = "Hello";

                        // Translates some text into Chinese (Traditional)

                        Translation translation = translate.translate(text,

                                                TranslateOption.sourceLanguage("en"),

                                                TranslateOption.targetLanguage("zh-TW"));

                        System.out.println("Word in English - " + text);

                        System.out.println("Word in Chinese (Traditional) - "

                                                + translation.getTranslatedText());

            }

}

The Console Output will be,

Word in English - Hello

Word in Chinese (Traditional) - ??

In Eclipse console, chinese characters are displayed as “??..” by default. To display the chinese characters, we need to change the run configuration as follows,

After the above change, the console output will be,

Word in English - Hello

Word in Chinese (Traditional) - 你好

Expect Future Posts, Thank You.