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。

# `DescribeApplicationState` 搭配 AWS SDK 使用
<a name="migration-hub_example_migration-hub_DescribeApplicationState_section"></a>

以下程式碼範例顯示如何使用 `DescribeApplicationState`。

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#### [ 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/migrationhub#code-examples)中設定和執行。

```
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.migrationhub.MigrationHubClient;
import software.amazon.awssdk.services.migrationhub.model.DescribeApplicationStateRequest;
import software.amazon.awssdk.services.migrationhub.model.DescribeApplicationStateResponse;
import software.amazon.awssdk.services.migrationhub.model.MigrationHubException;

/**
 * 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 DescribeAppState {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                    DescribeAppState <appId>\s

                Where:
                    appId -  the application id value.\s
                """;

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

        String appId = args[0];
        Region region = Region.US_WEST_2;
        MigrationHubClient migrationClient = MigrationHubClient.builder()
                .region(region)
                .build();

        describeApplicationState(migrationClient, appId);
        migrationClient.close();
    }

    public static void describeApplicationState(MigrationHubClient migrationClient, String appId) {
        try {
            DescribeApplicationStateRequest applicationStateRequest = DescribeApplicationStateRequest.builder()
                    .applicationId(appId)
                    .build();

            DescribeApplicationStateResponse applicationStateResponse = migrationClient
                    .describeApplicationState(applicationStateRequest);
            System.out.println("The application status is " + applicationStateResponse.applicationStatusAsString());

        } catch (MigrationHubException e) {
            System.out.println(e.getMessage());
            System.exit(1);
        }
    }
}
```
+  如需 API 詳細資訊，請參閱《AWS SDK for Java 2.x API 參考》**中的 [DescribeApplicationState](https://docs.aws.amazon.com/goto/SdkForJavaV2/migration-hub-2017-05-31/DescribeApplicationState)。

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