value.java

一个真实的网络选课系统,由实际需求得到的,本人实际开发出来,运用JSP+TOMCAT

package com;

import java.util.Date;

public class Value {
	public static int getValue(Date today)
	{
		
		Date now=new Date(today.getYear()+1900,today.getMonth(),today.getDate());
		Date old=new Date(2008,8,15);
		//Date now =new Date(2008,9,21);
		int daynum=(int)((long)(now.getTime()-old.getTime())/86400000);
		return daynum/7;
	}
	public static int getValue2(Date today)
	{
		
		Date now=new Date(today.getYear()+1900,today.getMonth(),today.getDate());
		Date old=new Date(2008,8,15);
		//Date now =new Date(2008,9,21);
		int daynum=(int)((long)(now.getTime()-old.getTime())/86400000);
		return daynum/7+1;
	}
	public static int getWeek(int num)
	{
		return num%7;
	}
	public static int getTime(int num)
	{
		return num/7;
	}
	public static boolean isValid(Date today)
	{
		
		if((today.getDay()==5&&today.getHours()>7)||today.getDay()==6||today.getDay()==0)
			return true;
		else
		{
			
			return false;
		}
	}
	public static String[] getRiQi(Date today)
	{
		String  RiQi[]=new String[7];
		long base=today.getTime()-(((today.getDay()+6)%7)+1)*86400000;
		Date datebase;
		for(int i=1;i<8;i++)
		{
			datebase=new Date(base+i*86400000);
			RiQi[i-1]=String.valueOf(datebase.getMonth()+1)+"月"+String.valueOf(datebase.getDate())+"日";
		}
		return RiQi;
	}

	public static String[] getRiQi2(Date today)
	{
		String  RiQi[]=new String[7];
		long base=today.getTime()-(((today.getDay()+6)%7)+1)*86400000+7*86400000;
		Date datebase;
		for(int i=1;i<8;i++)
		{
			datebase=new Date(base+i*86400000);
			RiQi[i-1]=String.valueOf(datebase.getMonth()+1)+"月"+String.valueOf(datebase.getDate())+"日";
		}
		return RiQi;
	}
}