(Java) Google Translate Text

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Demonstrates how to use the Cloud Translation API to translate text from one spoken language to another. The example translates from English to Spanish.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // --------------------------------------------------------------------------------
    // IMPORTANT: 
    // Don't forget you need to 1st enable the Cloud Translation API in your Google Developers Console at https://console.cloud.google.com
    // --------------------------------------------------------------------------------

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    CkJsonObject jsonToken = new CkJsonObject();
    boolean success = jsonToken.LoadFile("qa_data/tokens/_googleTranslate.json");
    if (success != true) {
        System.out.println("Failed to load _googleTranslate.json");
        return;
        }

    CkHttp http = new CkHttp();

    http.put_AuthToken(jsonToken.stringOf("access_token"));

    // The following JSON is sent in the request body.

    CkJsonObject json = new CkJsonObject();
    // The following code creates the JSON request body.
    json.UpdateString("q","The quick brown fox jumped over the lazy dog.");
    json.UpdateString("source","en");
    json.UpdateString("target","es");
    json.UpdateString("format","text");

    json.put_EmitCompact(false);
    System.out.println(json.emit());

    CkHttpResponse resp = http.PostJson3("https://translation.googleapis.com/language/translate/v2","application/json",json);
    if (http.get_LastMethodSuccess() == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    CkJsonObject jResp = new CkJsonObject();
    resp.GetBodyJson(jResp);
    jResp.put_EmitCompact(false);

    System.out.println("Response Body:");
    System.out.println(jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    System.out.println("Response Status Code = " + respStatusCode);
    if (respStatusCode >= 400) {
        System.out.println("Response Header:");
        System.out.println(resp.header());
        System.out.println("Failed.");

        return;
        }

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "data": {
    //     "translations": [
    //       {
    //         "translatedText": "El zorro rpida salt sobre el perro perezoso."
    //       }
    //     ]
    //   }
    // }

    String translatedText;

    int i = 0;
    int n = jResp.SizeOfArray("data.translations");
    while (i < n) {
        jResp.put_I(i);
        translatedText = jResp.stringOf("data.translations[i].translatedText");
        System.out.println(translatedText);
        i = i+1;
        }
  }
}