com.iohao.game.common.kit.MoreKit Maven / Gradle / Ivy

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/*
 * ioGame
 * Copyright (C) 2021 - present  渔民小镇 （[email protected]、[email protected]） . All Rights Reserved.
 * # iohao.com . 渔民小镇
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 */
package com.iohao.game.common.kit;

import lombok.experimental.UtilityClass;

import java.util.Map;

/**
 * @author 渔民小镇
 * @date 2023-12-07
 */
@UtilityClass
public class MoreKit {
    public  T firstNonNull(T first, T second) {
        if (first != null) {
            return first;
        }

        if (second != null) {
            return second;
        }

        throw new NullPointerException("两者为 null");
    }

    public  T putIfAbsent(Map map, K key, T value) {

        var first = map.putIfAbsent(key, value);

        return firstNonNull(first, value);
    }
}