Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2009-2015, b3log.org
 *
 * 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.
 */

import java.util.Collections;
import java.util.HashSet;

import java.util.Set;
import org.json.JSONArray;

public class Main {
    /**
     * Converts the specified {@link JSONArray JSON array} to a
     * {@link List list}.
     *
     * @param <T> the type of elements maintained by the specified json array
     * @param jsonArray the specified json array
     * @return an {@link ArrayList array list}
     */
    @SuppressWarnings("unchecked")
    public static <T> Set<T> jsonArrayToSet(final JSONArray jsonArray) {
        if (null == jsonArray) {
            return Collections.emptySet();
        }

        final Set<T> ret = new HashSet<T>();

        for (int i = 0; i < jsonArray.length(); i++) {
            ret.add((T) jsonArray.opt(i));
        }

        return ret;
    }
}