dayofweek

(first of all, excuse my english, i'm a beginner) let me explain the situation : I would like to create charts using Google Charts Tool (give it a try, it's very helpful). This part is not really difficult... The problem comes when i have a specific chart requiring in the x-axis the four weeks of a month : i would like to display on the screen only the four mondays in the currentmonth. I already have got the currentMonth and the currentYear variables and i know how to get the first day of the month. all i need is how to get the four mondays of a month, in an array. And all of this in the same

Let me explain myself. By knowing the week number and the year of a date: Date curr = new Date(); Calendar cal = Calendar.getInstance(); cal.setTime(curr); int nweek = cal.WEEK_OF_YEAR; int year = cal.YEAR; But now I don't know how to get the date of the first day of that week. I've been looking in Calendar, Date, DateFormat but nothing that may be useful... Any suggestion? (working in Java) BalusC Those fields does not return the values. Those are constants which identifies the fields in the Calendar object which you can get/set/add. To achieve what you want, you first need to get a Calendar

We have a utility that will run any day between Monday - Friday. It will update some number of files inside a Content Management Tool. The last modified date associated with that file should be, that week's monday's date. I wrote the following program to retrieve current week's monday's date. But I am still not sure whether this would work for all scenarios. Has anyone got a better solution ? Calendar c = Calendar.getInstance(); c.setTime(new Date()); System.out.println(c.get(Calendar.DAY_OF_MONTH)); System.out.println(c.get(Calendar.DAY_OF_WEEK)); int mondayNo = c.get(Calendar.DAY_OF_MONTH)-c

I have a date string in (yyyy-mm-dd) format, how can I get the weekday name from it? Example: For the string "2013-07-31", the output would be "Wednesday" For today's date using new Date() , the output would be based on the current day of week Use this function, comes with date string validation: If you include this function somewhere in your project, // Accepts a Date object or date string that is recognized by the Date.parse() method function getDayOfWeek(date) { var dayOfWeek = new Date(date).getDay(); return isNaN(dayOfWeek) ? null : ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',

I am using Sakamoto's algorithm to find out the day of week from a given date. Can anybody tell me the correctness of this algorithm? I just want this from 2000 to 2099. The algorithm from Wikipedia is given for reference. int dow(int y, int m, int d) { static int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4}; y -= m < 3; return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7; } Well, you can tell just by looking at it that it is correct... Assuming that the t[] array is correct, which you can verify with just 12 spot checks (one for each month using any day/year). The y -= m < 3 is a nice trick. It