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gurux.dlms.java package is used to communicate with DLMS devices.
There is a newer version: 4.0.72
//
// --------------------------------------------------------------------------
//  Gurux Ltd
// 
//
//
// Filename:        $HeadURL$
//
// Version:         $Revision$,
//                  $Date$
//                  $Author$
//
// Copyright (c) Gurux Ltd
//
//---------------------------------------------------------------------------
//
//  DESCRIPTION
//
// This file is a part of Gurux Device Framework.
//
// Gurux Device Framework is Open Source software; you can redistribute it
// and/or modify it under the terms of the GNU General Public License 
// as published by the Free Software Foundation; version 2 of the License.
// Gurux Device Framework is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of 
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
// See the GNU General Public License for more details.
//
// More information of Gurux products: https://www.gurux.org
//
// This code is licensed under the GNU General Public License v2. 
// Full text may be retrieved at http://www.gnu.org/licenses/gpl-2.0.txt
//---------------------------------------------------------------------------

package gurux.dlms.objects.enums;

import java.util.HashMap;

/**
 * Certificate entity.
 */
public enum CertificateEntity {
    /**
     * Certificate entity is server
     */
    SERVER(0),
    /**
     * Certificate entity is client
     */
    CLIENT(1),
    /**
     * Certificate entity is certification authority
     */
    CERTIFICATION_AUTHORITY(2),
    /**
     * Certificate entity is other.
     */
    OTHER(3);

    /**
     * Integer value of enumeration.
     */
    private int intValue;

    /**
     * Collection of integer and enumeration values.
     */
    private static java.util.HashMap mappings;

    /**
     * Get mappings.
     * 
     * @return Hash map of enumeration and integer values.
     */
    private static HashMap getMappings() {
        synchronized (CertificateEntity.class) {
            if (mappings == null) {
                mappings = new HashMap();
            }
        }
        return mappings;
    }

    /**
     * Constructor.
     * 
     * @param value
     *            Integer value for enumerator.
     */
    CertificateEntity(final int value) {
        intValue = value;
        synchronized (CertificateEntity.class) {
            getMappings().put(value, this);
        }
    }

    /**
     * Get enemerator's integer value.
     * 
     * @return Integer value of enumerator.
     */
    public int getValue() {
        return intValue;
    }

    /**
     * Get enumerator from integer value.
     * 
     * @param value
     *            integer value.
     * @return Enumerator value.
     */
    public static CertificateEntity forValue(final int value) {
        CertificateEntity ret = getMappings().get(value);
        if (ret == null) {
            throw new IllegalArgumentException(
                    "Invalid certificate entity enum value.");
        }
        return ret;
    }
}