idgenerator.java

来自「采用JAVA开发」· Java 代码 · 共 40 行

package com.gctech.sms.sp.cms.util;

public class IDGenerator
{
  int start = 0;
  int end = 9999999;
  int id = 0;
  public IDGenerator()
  {
  }
  public IDGenerator(int start,int end)
  {
    this.start = start ;
    this.end = end;
    id = start;
  }

  public int nextId()
  {
    synchronized(this)
    {
      if(id>end)
      {
        id = start;
        return id;
      }
      else
      {
        return ++id;
      }
    }
  }


  public static void main(String[] args)
  {
    IDGenerator IDGenerator1 = new IDGenerator();
  }

}