在Java中两个不同日期之间打印日期

Question

I am trying to get dates between given two dates and days, for example

date range 20/04/2014 - 210/05/2015

between these dates I am supposed to print dates between Monday to Friday for example. here is the code I developed:

SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Date startDate = (Date) formatter.parse("20/04/2014");
Date endDate = (Date) formatter.parse("10/05/2014");

Calendar cal = Calendar.getInstance();
Calendar cal1 = Calendar.getInstance();

cal.setTime(startDate);
cal1.setTime(endDate);

while (!cal.equals(cal1)) {
    cal.add(Calendar.DATE, 1);
    if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY|| cal1.get(Calendar.DAY_OF_WEEK) == Calendar.FRIDAY) {
        System.out.println(formatter.format(cal.getTime()));
        System.out.println(formatter.format(cal1.getTime()));
    }
    //System.out.println(formatter.format(cal.getTime()));

}

What I am supposed to see is:

21/04/2014(Monday)    
22/04/2014(Tuesday)    
23/04/2014(Wednesday)    
24/04/2014(Thursday)    
25/04/2014(Friday)    
28/04/2014(Monday)    
29/04/2014(Tuesday)    
30/04/2014(Wednesday)    
01/05/2014(Thursday)    
02/05/2014(Friday)    
05/05/2014(Monday)    
06/05/2014(Tuesday)    
07/05/2014(Wednesday)    
08/05/2014(Thursday)    
09/05/2014(Friday)

but what I am getting is:

21/04/2014    
20/05/2014    
28/04/2014    
20/05/2014    
05/05/2014    
20/05/2014    
12/05/2014    
20/05/2014    
19/05/2014    
20/05/2014

Answer 1

A few issues

• You're reusing the same DateFormat uses to parse the input data String which is missing the required day ( E ) pattern. Create a separate SimpleDateFormat with pattern dd/MM/yyyy (EEEE) to display the output.
• There is only output if the day is Monday or Friday, whereas there should only be output for a weekend day.
• Displaying the output for variable cal1 is unnecessary

Example:

while (!calendar1.equals(calendar2)) {
    calendar1.add(Calendar.DATE, 1);
    if (!(calendar1.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) &&
               !calendar2.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY)) {
        System.out.println(outputFormatter.format(calendar1.getTime()));
    }
}

Answer 2

You can use EEEE to print day name..

formatter = new SimpleDateFormat("dd/MM/yyyy(EEEE)");
System.out.println(formatter.format(cal.getTime()));