输入年月日格式YYYYmmdd，判断是否是周末

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public static String getWeekFromDate(String sDate,int type){
if("".equals(sDate)){
return "";
}
SimpleDateFormat df = null;
if(type==0){
df = new SimpleDateFormat("yyyy-MM-dd");
}else if(type==1){
df = new SimpleDateFormat("yyyyMMdd");
}
Date date = null;
try {
date = df.parse(sDate);
} catch (ParseException e) {
e.printStackTrace();
}
Calendar cd = Calendar.getInstance();
cd.setTime(date);
int mydate = cd.get(Calendar.DAY_OF_WEEK);
String showDate = "";
switch (mydate) {
case 1:
showDate = "星期日";
break;
case 2:
showDate = "星期一";
break;
case 3:
showDate = "星期二";
break;
case 4:
showDate = "星期三";
break;
case 5:
showDate = "星期四";
break;
case 6:
showDate = "星期五";
break;
default:
showDate = "星期六";
break;
}
return showDate;
}

	public static String getWeekFromDate(String sDate,int type){
		if("".equals(sDate)){
			return "";
		}
		SimpleDateFormat df = null;
		if(type==0){
			df = new SimpleDateFormat("yyyy-MM-dd");
		}else if(type==1){
			df = new SimpleDateFormat("yyyyMMdd");
		}
		
		Date   date   =   null;   
        try   {   
                date   =   df.parse(sDate);   
        }   catch   (ParseException   e)   {   
        	e.printStackTrace();
        }   
        Calendar   cd   =   Calendar.getInstance();   
        cd.setTime(date);   
        int   mydate   =   cd.get(Calendar.DAY_OF_WEEK);   
        String   showDate   =   "";   
        switch   (mydate)   {   
        case   1:   
                showDate   =   "星期日";   
                break;   
        case   2:   
                showDate   =   "星期一";   
                break;   
        case   3:   
                showDate   =   "星期二";   
                break;   
        case   4:   
                showDate   =   "星期三";   
                break;   
        case   5:   
                showDate   =   "星期四";   
                break;   
        case   6:   
                showDate   =   "星期五";   
                break;   
        default:   
                showDate   =   "星期六";   
                break;   
        }
        
        return showDate;
	}

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