public void setKmsKeyId(String kmsKeyId) {
        this.kmsKeyId = kmsKeyId;
    }
<p>
The identifier of the KMS key to use for Amazon EBS encryption. If this parameter is not specified, your KMS key
for Amazon EBS is used. If <code>KmsKeyId</code> is specified, the encrypted state must be <code>true</code>.
</p>
<p>
You can specify the KMS key using any of the following:
</p>
<ul>
<li>
<p>
Key ID. For example, 1234abcd-12ab-34cd-56ef-1234567890ab.
</p>
</li>
<li>
<p>
Key alias. For example, alias/ExampleAlias.
</p>
</li>
<li>
<p>
Key ARN. For example, arn:aws:kms:us-east-1:012345678910:key/1234abcd-12ab-34cd-56ef-1234567890ab.
</p>
</li>
<li>
<p>
Alias ARN. For example, arn:aws:kms:us-east-1:012345678910:alias/ExampleAlias.
</p>
</li>
</ul>
<p>
Amazon Web Services authenticates the KMS key asynchronously. Therefore, if you specify an ID, alias, or ARN that
is not valid, the action can appear to complete, but eventually fails.
</p>

@param kmsKeyId
       The identifier of the KMS key to use for Amazon EBS encryption. If this parameter is not specified, your
       KMS key for Amazon EBS is used. If <code>KmsKeyId</code> is specified, the encrypted state must be
       <code>true</code>.</p>
       <p>
       You can specify the KMS key using any of the following:
       </p>
       <ul>
       <li>
       <p>
       Key ID. For example, 1234abcd-12ab-34cd-56ef-1234567890ab.
       </p>
       </li>
       <li>
       <p>
       Key alias. For example, alias/ExampleAlias.
       </p>
       </li>
       <li>
       <p>
       Key ARN. For example, arn:aws:kms:us-east-1:012345678910:key/1234abcd-12ab-34cd-56ef-1234567890ab.
       </p>
       </li>
       <li>
       <p>
       Alias ARN. For example, arn:aws:kms:us-east-1:012345678910:alias/ExampleAlias.
       </p>
       </li>
       </ul>
       <p>
       Amazon Web Services authenticates the KMS key asynchronously. Therefore, if you specify an ID, alias, or
       ARN that is not valid, the action can appear to complete, but eventually fails.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/CreateVolumeRequest.java