怎么使用java判断String类型的yyyyMMdd是周五还是月末
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月末指的是每个月的最后一天，如果正好是在周六、周日，则往前顺延一天，
------解决方案--------------------
String sdate = "20120105";
DateFormat df = new SimpleDateFormat("yyyyMMdd");
Date date = df.parse(sdate);
Calendar cal = Calendar.getInstance();
cal.setTime(date);
String[] colname = {
"日", "一", "二", "三", "四", "五", "六"
};
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
System.out.println("今天是星期"+colname[dayOfWeek-1]);
int lastDayOfMonth = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
int nowDay = cal.get(Calendar.DAY_OF_MONTH);
if(nowDay == lastDayOfMonth){
System.out.println("月末");
}
------解决方案--------------------
请参考下以下代码
- Java code
String date="20110127";
Calendar calendar=Calendar.getInstance();
calendar.setTime(new SimpleDateFormat("yyyyMMdd").parse(date));
int dayOfWeek=calendar.get(Calendar.DAY_OF_WEEK);
int dayOfMonth=calendar.get(Calendar.DAY_OF_MONTH);
System.out.println(dayOfWeek);
System.out.println(dayOfMonth);
int friday=5;
int endMonth=calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
System.out.println(friday);
System.out.println(endMonth);
if(friday==dayOfWeek){
System.out.println("今天星期五!");
}else{
System.out.println("今天不是星期五,明天接着上班!");
}
if(endMonth==dayOfMonth){
System.out.println("今天月末!");
}else{
System.out.println("今天还无到月末!");
}
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