在java中獲取四分之一週的數字

Question

我想從四分之一的日期獲取星期數。

從下面我可以得到一年的週數，但不能在本季度內。

String input = "20130805"; 
String format = "yyyyMMdd"; 

SimpleDateFormat df = new SimpleDateFormat(format); 
Date date = df.parse(input); 

Calendar cal = Calendar.getInstance(); 
cal.setTime(date); 
int week = cal.get(Calendar.WEEK_OF_YEAR); 

結果應該是第三季度

Answer 1

的週數做一個模將帶給你答案：

int x = 52/4; //52 week as ave in a year 
System.out.println(week); 
System.out.println("you are in the quartal number: " + (week/x + 1)); 
System.out.println("this is the week number: " + week % x + " in the quartal"); 

Answer 2

試試這個，

String input = "20130805"; 
String format = "yyyyMMdd"; 

SimpleDateFormat df = new SimpleDateFormat(format); 
Date date = df.parse(input); 

Calendar cal = Calendar.getInstance(); 
cal.setTime(date); 
int weekForYear = cal.get(Calendar.WEEK_OF_YEAR); 
int previousQuarter = (date.getMonth()/3); 

System.out.println("No. of weeks for current Quarter: " + weekForYear - (previousQuarter*13));