int 类型的自增长ID生成类，支持多线程。

/*
* @(#)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();
}

}