How can I convert an Integer to localized month na

Question

I get an integer and I need to convert to a month names in various locales:

Example for locale en-us:
1 -> January
2 -> February

Example for locale es-mx:
1 -> Enero
2 -> Febrero

Answer 1

    public static void main(String[] args) {
    SimpleDateFormat format = new SimpleDateFormat("MMMMM", new Locale("en", "US"));
    System.out.println(format.format(new Date()));
}

Answer 2

java.time

Since Java 1.8 (or 1.7 & 1.6 with the ThreeTen-Backport) you can use this:

Month.of(integerMonth).getDisplayName(TextStyle.FULL_STANDALONE, locale);

Note that integerMonth is 1-based, i.e. 1 is for January. Range is always from 1 to 12 for January-December (i.e. Gregorian calendar only).

Answer 3

Apparently in Android 2.2 there is a bug with SimpleDateFormat.

In order to use month names you have to define them yourself in your resources:

<string-array name="month_names">
    <item>January</item>
    <item>February</item>
    <item>March</item>
    <item>April</item>
    <item>May</item>
    <item>June</item>
    <item>July</item>
    <item>August</item>
    <item>September</item>
    <item>October</item>
    <item>November</item>
    <item>December</item>
</string-array>

And then use them in your code like this:

/**
 * Get the month name of a Date. e.g. January for the Date 2011-01-01
 * 
 * @param date
 * @return e.g. "January"
 */
public static String getMonthName(Context context, Date date) {

    /*
     * Android 2.2 has a bug in SimpleDateFormat. Can't use "MMMM" for
     * getting the Month name for the given Locale. Thus relying on own
     * values from string resources
     */

    String result = "";

    Calendar cal = Calendar.getInstance();
    cal.setTime(date);
    int month = cal.get(Calendar.MONTH);

    try {
        result = context.getResources().getStringArray(R.array.month_names)[month];
    } catch (ArrayIndexOutOfBoundsException e) {
        result = Integer.toString(month);
    }

    return result;
}

Answer 4

Here's how I would do it. I'll leave range checking on the int month up to you.

import java.text.DateFormatSymbols;

public String formatMonth(int month, Locale locale) {
    DateFormatSymbols symbols = new DateFormatSymbols(locale);
    String[] monthNames = symbols.getMonths();
    return monthNames[month - 1];
}

Answer 5

There is an issue when you use DateFormatSymbols class for its getMonthName method to get Month by Name it show Month by Number in some Android devices. I have resolved this issue by doing this way:

In String_array.xml

<string-array name="year_month_name">
    <item>January</item>
    <item>February</item>
    <item>March</item>
    <item>April</item>
    <item>May</item>
    <item>June</item>
    <item>July</item>
    <item>August</item>
    <item>September</item>
    <item>October</item>
    <item>November</item>
    <item>December</item>
    </string-array>

In Java class just call this array like this way:

public String[] getYearMonthName() {
        return getResources().getStringArray(R.array.year_month_names);
        //or like 
       //return cntx.getResources().getStringArray(R.array.month_names);
    } 

      String[] months = getYearMonthName(); 
           if (i < months.length) {
            monthShow.setMonthName(months[i] + " " + year);

            }

Happy Coding :)

Answer 6

I would use SimpleDateFormat. Someone correct me if there is an easier way to make a monthed calendar though, I do this in code now and I'm not so sure.

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;


public String formatMonth(int month, Locale locale) {
    DateFormat formatter = new SimpleDateFormat("MMMM", locale);
    GregorianCalendar calendar = new GregorianCalendar();
    calendar.set(Calendar.DAY_OF_MONTH, 1);
    calendar.set(Calendar.MONTH, month-1);
    return formatter.format(calendar.getTime());
}