Sample code: Translate natural language with the Watson Language Translator service
Use the Java API for the Watson language translator service
Interactive code: When you see Run at the top of a code sample, you can run the code, check the results, make changes, and run it again. When you see Deploy, you can deploy the code into the developerWorks Bluemix account. To deploy the code, please sign in.
About this code
This code shows you how to use the Java API for the Watson language translator service. Given some text, a source language, and a target language, Watson translates that text and returns one or more translations to you.
The code has three basic sections:
- Default values for the parameters. These are always used by the
public static void main(String args)method. If the call to
public static JsonObject main(JsonObject args)has no parameters or the wrong number of parameters, the default values are also used there.
public static void main(String args)method. This uses a
JsonParserto convert the default parameters into a JSON object, then it calls...
public static JsonObject main(JsonObject args)method. This is the action the IBM Cloud Functions platform invokes once the code is deployed.
Sign in to run, change, and deploy this code.
Lines 55-66 illustrate the Java API for the service. The Watson SDK wraps the JSON returned by the service as a set of objects that are easy to work with in Java. Notice that it is possible for a translation to return multiple results. If Watson returns only one result, that's the only one the code displays. See the overview of the Language Translator service or the github repo for the Java API for more information.
Try changing the text or the languages to see what happens.
Using this code once deployed
To use this code once you've deployed it, you must create an instance of the Watson Language Translator service:
To invoke the code, pass a JSON structure that matches the
data object as shown above with the following changes:
endpointfields must be filled in with the credentials for your Language Translator service instance.
skip_authenticationfield must be
For more information, see the developerWorks tutorial Invoking actions on the IBM Cloud Functions platform.
- An overview of the Watson Language Translator service
- Create a free Bluemix account
- Java journeys on developer.ibm.com/code