You can use google script which has FREE translate API. All you need is a common google account and do these THREE EASY STEPS.
1) Create new script with such code on google script:

var mock = {
  parameter:{
    q: hello ,
    source: en ,
    target: fr 
  }
};


function doGet(e) {
  e = e || mock;

  var sourceText =   
  if (e.parameter.q){
    sourceText = e.parameter.q;
  }

  var sourceLang =   ;
  if (e.parameter.source){
    sourceLang = e.parameter.source;
  }

  var targetLang =  en ;
  if (e.parameter.target){
    targetLang = e.parameter.target;
  }

  var translatedText = LanguageApp.translate(sourceText, sourceLang, targetLang, {contentType:  html });

  return ContentService.createTextOutput(translatedText).setMimeType(ContentService.MimeType.JSON);
}

2) Click Publish -> Deploy as webapp -> Who has access to the app: Anyone even anonymous -> Deploy. And then copy your web app url, you will need it for calling translate API.

<>3> 利用这支java代码测试您的APIC:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

public class Translator {

    public static void main(String[] args) throws IOException {
        String text = "Hello world!";
        //Translated text: Hallo Welt!
        System.out.println("Translated text: " + translate("en", "de", text));
    }

    private static String translate(String langFrom, String langTo, String text) throws IOException {
        // INSERT YOU URL HERE
        String urlStr = "https://your.google.script.url" +
                "?q=" + URLEncoder.encode(text, "UTF-8") +
                "&target=" + langTo +
                "&source=" + langFrom;
        URL url = new URL(urlStr);
        StringBuilder response = new StringBuilder();
        HttpURLConnection con = (HttpURLConnection) url.openConnection();
        con.setRequestProperty("User-Agent", "Mozilla/5.0");
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        return response.toString();
    }

}

As it is free, there are QUATA LIMITS: https://docs.google.com/macros/dashboard

使用。 页: 1

Translator translate = Translator.getInstance();
String text = translate.translate("Hello!", Language.ENGLISH, Language.ROMANIAN);
System.out.println(text); // "Bună ziua!" 

这是正确的:仅见。 官方网页:

页: 1 作为一种有偿服务,可提供公益服务。 See the Pricing and FAQ pages for details.

BUT, java-google-translate-text-to-speech is FREE!

Example!

我发明了一个样本应用,显示这项工作。 Try it here: https://github.com/IonicaBizau/text-to-speech

Generate your own API key here. Check out the documentation here.

You may need to set up a billing account when you try to enable the Google Cloud Translation API in your account.

下面是一份快速的开端例子,该实例翻译了两个English <>/code> strings to Spanish:

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Arrays;

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.translate.Translate;
import com.google.api.services.translate.model.TranslationsListResponse;
import com.google.api.services.translate.model.TranslationsResource;

public class QuickstartSample
{
    public static void main(String[] arguments) throws IOException, GeneralSecurityException
    {
        Translate t = new Translate.Builder(
                GoogleNetHttpTransport.newTrustedTransport()
                , GsonFactory.getDefaultInstance(), null)
                // Set your application name
                .setApplicationName("Stackoverflow-Example")
                .build();
        Translate.Translations.List list = t.new Translations().list(
                Arrays.asList(
                        // Pass in list of strings to be translated
                        "Hello World",
                        "How to use Google Translate from Java"),
                // Target language
                "ES");

        // TODO: Set your API-Key from https://console.developers.google.com/
        list.setKey("your-api-key");
        TranslationsListResponse response = list.execute();
        for (TranslationsResource translationsResource : response.getTranslations())
        {
            System.out.println(translationsResource.getTranslatedText());
        }
    }
}

<dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-translate</artifactId>
    <version>LATEST</version>
</dependency>

<dependency>
    <groupId>com.google.http-client</groupId>
    <artifactId>google-http-client-gson</artifactId>
    <version>LATEST</version>
</dependency>