文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

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。

# `DescribeForecast` 搭配 AWS SDK 使用
<a name="forecast_example_forecast_DescribeForecast_section"></a>

以下程式碼範例顯示如何使用 `DescribeForecast`。

------
#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/forecast#code-examples)中設定和執行。

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.forecast.ForecastClient;
import software.amazon.awssdk.services.forecast.model.DescribeForecastRequest;
import software.amazon.awssdk.services.forecast.model.DescribeForecastResponse;
import software.amazon.awssdk.services.forecast.model.ForecastException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeForecast {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    <forecastarn>\s

                Where:
                    forecastarn - The arn of the forecast (for example, "arn:aws:forecast:us-west-2:xxxxx322:forecast/my_forecast)
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String forecastarn = args[0];
        Region region = Region.US_WEST_2;
        ForecastClient forecast = ForecastClient.builder()
                .region(region)
                .build();

        describe(forecast, forecastarn);
        forecast.close();
    }

    public static void describe(ForecastClient forecast, String forecastarn) {
        try {
            DescribeForecastRequest request = DescribeForecastRequest.builder()
                    .forecastArn(forecastarn)
                    .build();

            DescribeForecastResponse response = forecast.describeForecast(request);
            System.out.println("The name of the forecast is " + response.forecastName());

        } catch (ForecastException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}
```
+  如需 API 詳細資訊，請參閱《AWS SDK for Java 2.x API 參考》**中的 [DescribeForecast](https://docs.aws.amazon.com/goto/SdkForJavaV2/forecast-2018-06-26/DescribeForecast)。

------