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The IBM COS SDK for Java - Core module holds the classes that are used by the individual service clients to interact with IBM Cloud Object Storage. Users need to depend on cos-java-sdk artifact for accessing individual client classes.

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/*
 * Copyright 2015-2023 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.ibm.cloud.objectstorage;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * Default dns resolver that uses {@link java.net.InetAddress#getAllByName(String)}
 * to resolve hosts to ip addresses
 */
public class SystemDefaultDnsResolver implements DnsResolver {
    @Override
    public InetAddress[] resolve(String host) throws UnknownHostException {
        return InetAddress.getAllByName(host);
    }
}