本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。

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

以下 Java 代码示例显示如何使用基于 Java 的应用程序生成可在请求语音合成时使用的语音列表。您可以选择指定语言代码以筛选可用语音。例如，如果您指定 en-US，则该操作将返回所有可用美国英语语音的列表。

有关此操作的更多信息，请参阅 [https://docs.aws.amazon.com/polly/latest/dg/API_DescribeVoices.html](https://docs.aws.amazon.com/polly/latest/dg/API_DescribeVoices.html) API 参考。

```
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);
        }
    }
}
```