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javadatedatetimemilliseconds

Get milliseconds by next Saturday

I am developing a weekly event, but I need to get the milliseconds (unix timestamp) by next Saturday. How can I do that?

Solution

  • 1 create a calendar 

     Calendar calNow = Calendar.getInstance();

    2 create another calendar, set it to midnight and move day by day until you hit Saturday

        Calendar calNextSat = Calendar.getInstance();
    calNextSat.set(Calendar.HOUR, 0);
    calNextSat.set(Calendar.MINUTE, 0);
    calNextSat.set(Calendar.SECOND, 0);
    while(calNextSat.get(Calendar.DAY_OF_WEEK) != Calendar.SATURDAY){
        calNextSat.add(Calendar.DATE, 1);
    }

    System.out.println(calNextSat.getTimeInMillis() - calNow.getTimeInMillis());

    handle the scenario if it is already Saturday you would get <=0 result