Combine two Dictionary properties lists. - Java java.util

Java examples for java.util:List Compare

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Description

Combine two Dictionary properties lists.

Demo Code

/* --------------------------------------------------------===
 * TradeManager : An application to trade strategies for the Java(tm) platform
 * --------------------------------------------------------===
 *
 * (C) Copyright 2011-2011, by Simon Allen and Contributors.
 *
 * Project Info:  org.trade// w  ww.j  a  v  a2  s  .  c o m
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Oracle, Inc.
 * in the United States and other countries.]
 *
 * (C) Copyright 2011-2011, by Simon Allen and Contributors.
 *
 * Original Author:  Simon Allen;
 * Contributor(s):   -;
 *
 * Changes
 * -------
 *
 */
//package com.book2s;

import java.util.Dictionary;
import java.util.Enumeration;

public class Main {
    /**
     * Combine two properties lists. All properties from source are copied to
     * destination. <i>destination</i> is the result.
     * 
     * Properties that exist in both source and destination will be overwritten
     * with values from source.
     * 
     * Hastables and Properties can be used as they are Dictionaries.
     * 
     * 
     * @param source
     *            Dictionary<Object,Object>
     * @param destination
     *            Dictionary<Object,Object>
     */
    public static void copyOverwrite(Dictionary<Object, Object> source,
            Dictionary<Object, Object> destination) {
        if ((destination == null) || (source == null)) {
            throw new IllegalArgumentException(
                    "Invalid arguments specified : source = " + source
                            + " destination = " + destination);
        }

        Object key;
        Enumeration<Object> enumKey = source.keys();

        while (enumKey.hasMoreElements()) {
            key = enumKey.nextElement();

            destination.put(key, source.get(key));
        }
    }
}

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