LinkedProperties.java

package com.rayo.server.util;

import java.util.Collections;
import java.util.Enumeration;
import java.util.LinkedHashSet;
import java.util.Properties;

/**
 * Utility class to read properties files in order
 * 
 * @author martin
 *
 */
@SuppressWarnings("serial")
public class LinkedProperties extends Properties {

    private final LinkedHashSet<Object> keys = new LinkedHashSet<Object>();

    public Enumeration<Object> keys() {
        return Collections.<Object>enumeration(keys);
    }

    public Object put(Object key, Object value) {
        keys.add(key);
        return super.put(key, value);
    }
}