idgenerator.java

来自「采用JAVA开发」· Java 代码 · 共 29 行

package com.gctech.cmpp3.util;

import EDU.oswego.cs.dl.util.concurrent.SynchronizedInt;

/**
 * <p>Title: 短信 API</p>
 * <p>Description: 短信SP API</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: GCTECH</p>
 * @author 王红宝
 * @version $Id: IDGenerator.java,v 1.1 2004/05/21 07:50:11 wanghb Exp $
 */

public class IDGenerator {
  SynchronizedInt seq;
  private IDGenerator() {
    seq = new SynchronizedInt(0);
  }
  private static IDGenerator singleton;
  public static IDGenerator getInstance(){
    if ( singleton == null )
      singleton = new IDGenerator();
    return singleton;
  }
  public int increment(){
    return seq.increment();
  }

}