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# DeletePermission
<a name="JavaApi-DeletePermission"></a>

以下 Java 示例显示了如何使用该[DeletePermission](https://docs.aws.amazon.com/privateca/latest/APIReference/API_DeletePermission.html)操作。

该操作会删除私有 CA 使用该[CreatePermissions](https://docs.aws.amazon.com/privateca/latest/APIReference/API_CreatePermission.html)操作委托给 AWS 服务委托人的权限。您可以通过调用函数找到 CA 的 ARN。[ListCertificateAuthorities](https://docs.aws.amazon.com/privateca/latest/APIReference/API_ListCertificateAuthorities.html)您可以通过调用[ListPermissions](https://docs.aws.amazon.com/privateca/latest/APIReference/API_ListPermissions.html)函数来检查 CA 授予的权限。

```
package com.amazonaws.samples;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.client.builder.AwsClientBuilder.EndpointConfiguration;
import com.amazonaws.AmazonClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;

import com.amazonaws.services.acmpca.AWSACMPCA;
import com.amazonaws.services.acmpca.AWSACMPCAClientBuilder;

import com.amazonaws.services.acmpca.model.DeletePermissionRequest;
import com.amazonaws.services.acmpca.model.DeletePermissionResult;

import com.amazonaws.services.acmpca.model.InvalidArnException;
import com.amazonaws.services.acmpca.model.InvalidStateException;
import com.amazonaws.services.acmpca.model.RequestFailedException;
import com.amazonaws.services.acmpca.model.ResourceNotFoundException;

public class DeletePermission {

   public static void main(String[] args) throws Exception {

      // Retrieve your credentials from the C:\Users\name\.aws\credentials file
      // in Windows or the .aws/credentials file in Linux.
      AWSCredentials credentials = null;
      try {
         credentials = new ProfileCredentialsProvider("default").getCredentials();
      } catch (Exception e) {
         throw new AmazonClientException("Cannot load your credentials from file.", e);
      }

      // Define the endpoint for your sample.
      String endpointRegion = "{{region}}";  // Substitute your region here, e.g. "us-west-2"
      String endpointProtocol = "https://acm-pca." + endpointRegion + ".amazonaws.com/";
      EndpointConfiguration endpoint =
            new AwsClientBuilder.EndpointConfiguration(endpointProtocol, endpointRegion);

      // Create a client that you can use to make requests.
      AWSACMPCA client = AWSACMPCAClientBuilder.standard()
         .withEndpointConfiguration(endpoint)
         .withCredentials(new AWSStaticCredentialsProvider(credentials))
         .build();

      // Create a request object.
      DeletePermissionRequest req =
          new DeletePermissionRequest();
          
      //  Set the certificate authority ARN.
      req.setCertificateAuthorityArn("arn:{{aws}}:acm-pca:{{us-east-1}}:{{111122223333}}:certificate-authority/{{11223344-1234-1122-2233-112233445566}}");
      
      // Set the AWS service principal.
      req.setPrincipal("{{acm.amazonaws.com}}");

      // Create a result object.
      DeletePermissionResult result = null;
      try {
         result = client.deletePermission(req);
      } catch (InvalidArnException ex) {
         throw ex;
      } catch (InvalidStateException ex) {
         throw ex;
      } catch (RequestFailedException ex) {
         throw ex;
      } catch (ResourceNotFoundException ex) {
         throw ex;
      }
   }
}
```