// Bucket name in the format of BucketName-APPID (APPID is required), which can be viewed in the COS console at https://console.cloud.tencent.com/cos5/bucket.
String bucket = "examplebucket-1250000000";
String cosPath = "exampleobject"; // The location identifier of the object in the bucket, i.e., the object key
RestoreRequest restoreRequest = new RestoreRequest(bucket, cosPath);
restoreRequest.setExpireDays(5); // Retain for 5 days
restoreRequest.setTier(RestoreConfigure.Tier.Standard); // Standard restoration mode

cosXmlService.restoreObjectAsync(restoreRequest, new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest request, CosXmlResult result) {
        RestoreResult restoreResult = (RestoreResult) result;
    }

    // If you are using Kotlin to call the API, please note that the exception in the callback method is nullable; otherwise, the onFail method will not be called, i.e.:
    // Is the type of clientException CosXmlClientException? Is the type of serviceException CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});