Date text box should be always 1st date current month.?

I want a javascript or java pro开发者_StackOverflow社区gram should always give date 1st of current month. Is there any tech?

You can use Calendar for Java

      Date date = new Date(System.currentTimeMillis());
      cal = Calendar.getInstance();
      cal.setTime(date);
      cal.set(Calendar.DAY_OF_MONTH, 1);

Now you do what every you want to do with this Calendar object like to get the Day of the Week (Sat, Sun, .... )

int weekday = cal.get(Calendar.DAY_OF_WEEK);

And for JavaScript you can use:

var theFirst = new Date();
theFirst.setDate(1);

setDate sets the day of the month for the Date object (from 1 to 31). Then you can do whatever you want with theFirst, like get the day of the week.

Calendar ans = Calendar.getInstance();

ans.set(ans.get(Calendar.YEAR),
        ans.get(Calendar.MONTH),
        1,
        0,
        0,
        0
);
System.out.println(ans.getTime());