Styjun

I would like a text as input to reproduce the content of that text as a synthesized voice with the speakers of my computer. The application I'm developing is in Java and to get the desired result I'm using the Google-test-to-speech libraries. I started with the following code:
https://cloud.google.com/text-to-speech/docs/reference/libraries

but as you can see the voice message is saved on file and not reproduced with the speakers. So my question is how can I reproduce the voice message with the speakers of the computer running the application?

import com.google.cloud.texttospeech.v1.AudioEncoding;
import com.google.cloud.texttospeech.v1.SsmlVoiceGender;
import com.google.cloud.texttospeech.v1.SynthesisInput;
import com.google.cloud.texttospeech.v1.SynthesizeSpeechResponse;
import com.google.cloud.texttospeech.v1.TextToSpeechClient;
import com.google.cloud.texttospeech.v1.VoiceSelectionParams;
import com.google.protobuf.ByteString;
import java.io.FileOutputStream;
import java.io.OutputStream;


public class QuickstartSample 

 public static void main(String... args) throws Exception 
 // Instantiates a client
 try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create()) 
 // Set the text input to be synthesized
 SynthesisInput input = SynthesisInput.newBuilder()
 .setText("Hello, World!")
 .build();

 // Build the voice request, select the language code ("en-US") and the ssml voice gender
 // ("neutral")
 VoiceSelectionParams voice = VoiceSelectionParams.newBuilder()
 .setLanguageCode("en-US")
 .setSsmlGender(SsmlVoiceGender.NEUTRAL)
 .build();

 // Select the type of audio file you want returned
 AudioConfig audioConfig = AudioConfig.newBuilder()
 .setAudioEncoding(AudioEncoding.MP3)
 .build();

 // Perform the text-to-speech request on the text input with the selected voice parameters and
 // audio file type
 SynthesizeSpeechResponse response = textToSpeechClient.synthesizeSpeech(input, voice,
 audioConfig);

 // Get the audio contents from the response
 ByteString audioContents = response.getAudioContent();

 // Write the response to the output file.
 try (OutputStream out = new FileOutputStream("output.mp3")) 
 out.write(audioContents.toByteArray());
 System.out.println("Audio content written to file "output.mp3"");