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/**
 * Copyright (C) 2020 WaveMaker, Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.wavemaker.commons.properties;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.TreeSet;

/**
 * @author Sunil Kumar
 * @since 14/4/16
 */
public class SortedProperties extends Properties {

    @Override
    public synchronized Enumeration keys() {
        Enumeration keysEnum = super.keys();
        List keyList = new ArrayList<>();
        while (keysEnum.hasMoreElements()) {
            keyList.add((String) keysEnum.nextElement());
        }
        Collections.sort(keyList);
        return Collections.enumeration(keyList);
    }

    @Override
    public Set stringPropertyNames() {
        return new TreeSet<>(super.stringPropertyNames());
    }

}