CODEWITHSUNDEEP
java
boxed__l
boxed__l

Reputation: 1336

How to get month number from Calender

line holds month name given by the user. I would like to display the month number.

example: june -> 6

Present code:

String line="june";
int monthNo = Integer.parseInt(GregorianCalendar.class.getField(line.toUpperCase()).get(line))+1;
System.out.println(monthNo);

What is the best method to do this?
Edit:
Using existing Calender classes

Upvotes: 2

Views: 790

Answers (3)

Pacane
Pacane

Reputation: 21521

I suggest you use a combobox, or a control that restrain your users from typing anything, and mapping it to a constant field.

Then you can use from the GregorianCalendar

int selectedMonth = c.get(Calendar.MONTH) + 1; (+1 since indexing starts at 0) (c being an instance of GregorianCalendar)

Upvotes: 4

svz
svz

Reputation: 4588

Just for the sake of doing this with Calendar I shall offer this solution.

    DateFormat df = new SimpleDateFormat("MMMM");
    try {
        Date date = df.parse("july");
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        System.out.print(cal.get(Calendar.MONTH));
    } catch (Exception e){

    }

Note that this is not the best way of doing this at all and I'd suggest you use an enum instead.

Upvotes: 3

Rafael Winterhalter
Rafael Winterhalter

Reputation: 44067

Java's calendar API is not the best API around. Many people therefore changed to use http://www.joda.org/joda-time/ as a quasi alternative standard. But if your application is that simple, I think hard-coding a map of names pointing to numbers would be the easiest and most efficient solution (assuming, your string is in fact a user input, otherwise, use an enum as suggested). Alternatively, you can use a date format.

Upvotes: 2

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