is Day Of Month, Check for valid date - Java java.util

Java examples for java.util:Month

  1. HOME
  2. Java
  3. java.util
  4. Month

Description

is Day Of Month, Check for valid date

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int year = 2;
        int month = 2;
        int day = 2;
        System.out.println(isDayOfMonth(year, month, day));
    }//  ww  w  .  j  a  va 2s . c  om

    /**
     * Check for valid date
     * @param year
     * @param month
     * @param day
     * @return is valid date
     */
    public static boolean isDayOfMonth(int year, int month, int day) {

        int daysOfMonth;

        if ((month < 1) || (12 < month)) // invalid month
            return false;

        switch (month) { // get days in this month
        case 4:
        case 6:
        case 9:
        case 11: // Apr, Jun, Sep, Nov
            daysOfMonth = 30;
            break;
        case 2:
            daysOfMonth = 28; // Feb normal
            if (isLeapYear(year)) {
                daysOfMonth = 29; // Feb leap year
            }
            break;
        default:
            daysOfMonth = 31; // other months
            break;
        }

        return (0 < day) && (day <= daysOfMonth);
    }

    /**
     * Determinate leap year
     * @param year
     * @return true - is leap year, else - false
     */
    public static boolean isLeapYear(int year) {
        boolean leapYear = false;

        if ((year % 4 == 0) && (!((year % 100 == 0) && (year % 400 != 0))))
            leapYear = true;

        return leapYear;
    }
}

Related Tutorials