JAVA的数据分页显示

import java.util.ArrayList;

public class PageIndex

{

     private int pageSize;               //每页要显示的行

     private int pageNum;              //总页数

     private int pageId;                  //当前页

     private int size;                       //结果集的长度

     private ArrayList arraylist;      //要分页的结果集

 

      public PageIndex(){}               //构造方法

 

       public PageIndex(int pageSize,int pageId,ArrayList arraylist)

      {

               this.pageSize = pageSize;

               this.pageId = pageId;

              this.size = arraylist.size();

              this.arraylist = arraylist;

      }

      public ArrayList Pagination()

      {

            if(size%pageSize==0)

            {

                  pageNum = size/pageSize;

             }

            else

            {

                    pageNum = size/pageSize+1;

             }

              int suffixindex = (pageId-1)*pageSize;           //结果集下标的索引

             ArrayList returnarray = new ArrayList();

             for(int i = 0 ; i <pageSize && x<size ; i++)

             {

                   returnarray.add(arraylist.get(suffixindex));

                   suffixindex++;

              }

             return returnarray;

       }

      public int getPageNum()

     {

            return this.pageNum;         //返回总页数

     }

     public int getSize()

     {

           return this.size;                  //返回总结果集长度

      }

}