一個用JSP實現的分頁的類及調用方法

//PageCt.java 分頁的類
/*
*** @version ***********
*** Created on 2001年6月25日, 下午14:41
**************************************
*/
package vod;
import java.sql.*;
import java.util.*;

public class PageCt
{
private long l_start; //開始紀錄
private long l_end; //結束紀錄
private long l_curpage; //當前頁數
private long l_totalnum;//總記錄數
private int int_num=5; //每頁10條
private long l_totalpage; //總的頁數

public void Init(long currentpage,long totalnum)
{
l_curpage = currentpage;
l_totalnum = totalnum;

if (currentpage＞=0)
{
if (currentpage＞=(long)Math.ceil((double)l_totalnum/(double)int_num))
l_curpage = (long)Math.floor((double)l_totalnum/(double)int_num);
else
l_curpage = currentpage;
}
else
{
l_curpage = 0;
}
l_start = l_curpage * int_num;
l_end = l_start + int_num;
if (l_end ＞ l_totalnum)
l_end = l_totalnum;
l_totalpage = (long)Math.ceil((double)l_totalnum/(double)int_num);
}
public long getCurpage()
{
return l_curpage;
}
public long getPrepage()
{
if (l_curpage-1＞=0)
{
return l_curpage-1;
}
else
{
return 0;
}
}
public long getNextpage()
{
if (l_curpage+1＜=l_totalpage)
{
return l_curpage+1;
}
else
{
return l_totalpage;
}
}
public long getTotalnum()
{
return l_totalnum;
}
public long getTotalpage()
{
return l_totalpage;
}
public long getStart()
{
return l_start;
}
public long getEnd()
{
return l_end;
}