本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# DescribeVoices
<a name="DescribeVoicesSample"></a>

以下 Java 程式碼範例展示如何使用以 Java 為基礎的應用程式，來產生聲音清單。這些聲音可在要求語音合成時使用。您可以選擇指定語言代碼來篩選可用的聲音。例如，如果您指定 en-US，此次操作就會傳回所有可用美式英文聲音的清單。

如需此操作的詳細資訊，請參閱 [https://docs.aws.amazon.com/polly/latest/dg/API_DescribeVoices.html](https://docs.aws.amazon.com/polly/latest/dg/API_DescribeVoices.html) API 的參考文章。

```
package com.amazonaws.polly.samples;
 
import com.amazonaws.services.polly.AmazonPolly;
import com.amazonaws.services.polly.AmazonPollyClientBuilder;
import com.amazonaws.services.polly.model.DescribeVoicesRequest;
import com.amazonaws.services.polly.model.DescribeVoicesResult;
 
public class DescribeVoicesSample {
    AmazonPolly client = AmazonPollyClientBuilder.defaultClient();
 
    public void describeVoices() {
        DescribeVoicesRequest allVoicesRequest = new DescribeVoicesRequest();
        DescribeVoicesRequest enUsVoicesRequest = new DescribeVoicesRequest().withLanguageCode("en-US");
 
        try {
            String nextToken;
            do {
                DescribeVoicesResult allVoicesResult = client.describeVoices(allVoicesRequest);
                nextToken = allVoicesResult.getNextToken();
                allVoicesRequest.setNextToken(nextToken);
 
                System.out.println("All voices: " + allVoicesResult.getVoices());
            } while (nextToken != null);
 
            do {
                DescribeVoicesResult enUsVoicesResult = client.describeVoices(enUsVoicesRequest);
                nextToken = enUsVoicesResult.getNextToken();
                enUsVoicesRequest.setNextToken(nextToken);
 
                System.out.println("en-US voices: " + enUsVoicesResult.getVoices());
            } while (nextToken != null);
        } catch (Exception e) {
            System.err.println("Exception caught: " + e);
        }
    }
}
```