Is it posible to get how many day's has one specific month with Calendar

Question

Can any help me how to get how many days one month has. Like february 28, and sometimes 29.

Answer 1

There is no way to do this within Calendar directly, the Gregorian calendar has a private method that does this, shame its not public.
You would need to do something like,
import java.util.*;
public class MyCalendar extends GregorianCalendar {
    private static final int MONTH_LENGTH[]
        = {31,28,31,30,31,30,31,31,30,31,30,31}; // 0-based
    private static final int LEAP_MONTH_LENGTH[]
        = {31,29,31,30,31,30,31,31,30,31,30,31}; // 0-based
    /** Creates a new instance of MyCalendar */
    public MyCalendar() {
    public final int monthLength(int month, int year) {
        return isLeapYear(year) ? LEAP_MONTH_LENGTH[month] : MONTH_LENGTH[month];
    public static void main(String argv[]){
        MyCalendar cal = new MyCalendar();
        System.out.println( "There are " + cal.monthLength(cal.get(Calendar.MONTH),cal.get(Calendar.YEAR)) + " days this month.");
}