int 类型的自增长ID生成类，支持多线程。

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最新推荐文章于 2025-07-03 10:52:31 发布

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本文介绍了一个用于生成自增整型ID的类，支持多线程环境，旨在解决ID分配的效率与一致性问题。通过使用AtomicInteger，确保了在并发环境下ID的唯一性和连续性。

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/*
 * @(#)IdGenerator.java              Project:androidkit
 * Date:2013-5-2
 *
 * Copyright (c) 2013 CFuture09, Institute of Software, 
 * Guangdong Ocean University, Zhanjiang, GuangDong, China.
 * All rights reserved.
 *
 * 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.lurencun.cfuture09.androidkit.utils.lang;

/**
 * @author Geek_Soledad (66704238@51uc.com)
 */
public interface IdGenerator<T> {
   /**
    * 生成下一个id并返回。
    * 
    * @return 返回新的id.
    */
   public T next();

}
/**
 * int 类型的自增长ID生成类，支持多线程。
 * 
 * @Author Geek_Soledad (66704238@51uc.com)
 */
public class IncreaseIntId implements IdGenerator<Integer> {
   private AtomicInteger id;

   public IncreaseIntId() {
      id = new AtomicInteger();
   }

   public IncreaseIntId(int initialId) {
      id = new AtomicInteger(initialId);
   }

   @Override
   public Integer next() {
      return id.incrementAndGet();
   }

}