java处理年、月、周次以及起至日期大全

if(iType == 4)
{
pType = 12;
} else
if(iType == 5)
{
pType = 13;
}
Cal.add(pType, iCount);
SimpleDateFormat sdf = null;
if(iType <= 2)
sdf = new SimpleDateFormat("yyyy-MM-dd");
int min = ss / 60;
int hour = min / 60;
int day = hour / 24;
if(iType == 0)
return hour;
if(iType == 1)
return min;
if(iType == 2)
return day;
else
return -1;
int hh = 0;
int mi = 0;
int ss = 0;
if(baseDate.length() > 12)
{
hh = Integer.parseInt(baseDate.substring(11, 13));
mi = Integer.parseInt(baseDate.substring(14, 16));
public boolean isLeapYear(int yearNum){
boolean isLeep = false;
/**判断是否为闰年，赋值给一标识符flag*/
if((yearNum % 4 == 0) && (yearNum % 100 != 0)){
isLeep = true;
} else if(yearNum % 400 ==0){
isLeep = true;
} else {
isLeep = false;
}
return isLeep;
}
/*****************************************
* @功能 计算当前日期某年的第几周
int pType = 0;
if(iType == 0)
{
pType = 1;
} else
if(iType == 1)
{
pType = 2;
} else
if(iType == 2)
{
pType = 5;
} else
if(iType == 3)
{
pType = 10;
} else
{
SimpleDateFormat sdf = new SimpleDateFormat(strFormat);
String sDate = sdf.format(new Date());
return sDate;
}
/**
* @see 取得指定时间的给定格式()
* @return String
ss = Integer.parseInt(baseDate.substring(17, 19));
}
cal.set(yy, mm, dd, hh, mi, ss);
return cal;
}
public int getDay(String strDate)
{
Calendar cal = parseDateTime(strDate);
* @return interger
* @throws ParseException
****************************************/
public int getWeekNumOfYear(){
Calendar calendar = Calendar.getInstance();
* @throws ParseException
****************************************/
public int getWeekNumOfYearDay(String strDate ) throws ParseException{
Calendar calendar = Calendar.getInstance();
String sDate = sdf.format(new Date());
return sDate;
}
/**
* @see 按指定格式取得当前时间()
* @return String
*/
public String GetTimeFormat(String strFormat)
* @return String
*/
public String GetDate()
{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String sDate = sdf.format(new Date());
return sDate;
else
sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String sDate = sdf.format(Cal.getTime());
return sDate;
}
public String DateAdd(String strOption, int iDays, String strStartDate)
} catch (Exception e) {
}
return sDateTime;
}
public static Calendar parseDateTime(String baseDate)
{
Calendar cal = null;
cal = new GregorianCalendar();
import java.util.Calendar;
import java.util.GregorianCalendar;
/**
* 说明: 取日期时间工具
public class DateUtil { public Dat来自Util(){} /**
* @see 取得当前日期（格式为：yyyy-MM-dd）
* @throws ParseException
*/
public String SetDateFormat(String myDate,String strFormat) throws ParseException
{
SimpleDateFormat sdf = new SimpleDateFormat(strFormat);
int yy = Integer.parseInt(baseDate.substring(0, 4));
int mm = Integer.parseInt(baseDate.substring(5, 7)) - 1;
int dd = Integer.parseInt(baseDate.substring(8, 10));
}
/**
* @see 取得当前时间（格式为：yyy-MM-dd HH:mm:ss）
* @return String
*/
public static String GetDateTime()
{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
/*
* 创建日期 2010-04-19
*
* 功能 取日期时间工具
*
*/
package com.util;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date curDate = format.parse(strDate);
calendar.setTime(curDate);
int iWeekNum = calendar.get(Calendar.WEEK_OF_YEAR);
}
public int getWeekDay(String strDate)
{
Calendar cal = parseDateTime(strDate);
return cal.get(Calendar.DAY_OF_WEEK);
}
public String getWeekDayName(String strDate)
try {
Calendar Cal = parseDateTime(strDateTime);
SimpleDateFormat sdf = null;
sdf = new SimpleDateFormat(strFormat);
sDateTime = sdf.format(Cal.getTime());
{
Calendar cal = parseDateTime(strDate);
return cal.get(Calendar.YEAR) + 1900;