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The AWS SDK for Java Mobile - Core module holds the classes that is used by the individual service clients to interact with Amazon Web Services. Users need to depend on aws-java-sdk artifact for accessing individual client classes.

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/*
 * Copyright 2012-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package com.amazonaws.auth;

import static com.amazonaws.SDKGlobalConfiguration.ACCESS_KEY_SYSTEM_PROPERTY;
import static com.amazonaws.SDKGlobalConfiguration.SECRET_KEY_SYSTEM_PROPERTY;

import com.amazonaws.AmazonClientException;

/**
 * {@link AWSCredentialsProvider} implementation that provides credentials by
 * looking at the aws.accessKeyId and aws.secretKey
 * Java system properties.
 */
@Deprecated
public class SystemPropertiesCredentialsProvider implements AWSCredentialsProvider {

    @Override
    public AWSCredentials getCredentials() {
        if (System.getProperty(ACCESS_KEY_SYSTEM_PROPERTY) != null &&
                System.getProperty(SECRET_KEY_SYSTEM_PROPERTY) != null) {
            return new BasicAWSCredentials(
                    System.getProperty(ACCESS_KEY_SYSTEM_PROPERTY),
                    System.getProperty(SECRET_KEY_SYSTEM_PROPERTY));
        }

        throw new AmazonClientException(
                "Unable to load AWS credentials from Java system properties " +
                        "(" + ACCESS_KEY_SYSTEM_PROPERTY + " and " + SECRET_KEY_SYSTEM_PROPERTY
                        + ")");
    }

    @Override
    public void refresh() {
    }

    @Override
    public String toString() {
        return getClass().getSimpleName();
    }
}