Design a program which accepts your accepts your dob in dd mm yyyy format. Check whether the date entered is a valid date or not. If it is valid, display "VALID DATE". Also compute and display the day number of the year for the dob And the date in words as given example if it is valid display invalidate and then terminate the program. <pre> EXAMPLE : 1 INPUT : Enter your date in dd mm yyyy format 05 01 2013 OUTPUT : VALID DATE 5 5th January 2013 EXAMPLE : 2 INPUT : Enter Your DOB in dd mm yyyy 03 04 2010 OUTPUT : VALID DATE 93 3rd April 2013 </pre> </a></td> </tr> <tr> <td><a class="txt" href="">4.</a></td> <td><a class="txt" href="">A class staff is declared with the following details <pre> Class name staff Data members : Code_num int to store staff code number Sname To store staff's name Basic To store basic salary Member Functions : Staff() - Constructor void input() - To accept the values void printdata() - To print values Another class Overtime is declared as Class Name Overtime Data members ndays : To store the number of days worked ex_hrs : To store the number of hours worked per day rate : Rate per hour Member Functions Overtime (int n, double r, int h) Constructor to assign n to ndays , r to rate anf h to ex_hrs Double calculate() : to calculate the total salary(Number of days worked * rate per hour * number of hours worked per day + basic salary) and total salary. void show_salary() To display number of days worked rate and total salary. Using the concept of inheritance define the above classes and all the functions in them the main function need not to be written.

Design a program which accepts your accepts your dob in dd mm yyyy format. Check whether the date entered is a valid date or not. If it is valid, display "VALID DATE". Also compute and display the day number of the year for the dob And the date in words as given example if it is valid display invalidate and then terminate the program.

EXAMPLE : 1
INPUT : Enter your date in dd mm yyyy format
05
01
2013
OUTPUT :  VALID DATE  5
5^th January 2013

EXAMPLE : 2
INPUT : Enter Your DOB in dd mm yyyy
03
04
2010
OUTPUT : VALID DATE 
93
3^rd April 2013

import java.util.*;
class Validate
{
    int dd,mm,yyyy;
    String day[]={"th","st","nd","rd"};
    String month[]={""," January "," February "," March "," April "," May "," June "," July ",
            " August "," September "," October "," November "," December "};
    int nyear[]={0,31,28,31,30,31,30,31,31,30,31,30,31};
    int lyear[]={0,31,29,31,30,31,30,31,31,30,31,30,31};

    void input(){
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter your date of birth in dd mm yyyy format");
        dd=sc.nextInt();
        mm=sc.nextInt();
        yyyy=sc.nextInt();        
    }

    void date_numbers()
    {
        int n=0;

        // check leap year acc. to that find day on the bases of year
        if(((yyyy%4==0)&&(yyyy%100!=0))||(yyyy%400==0))
        {
            for(int i=1;i< mm;i++)
            {
                n=n+lyear[i];
            }
            n=n+dd;
        }

        //not leap year
        else
        {
            for(int i=1;i< mm;i++)
            {
                n=n+nyear[i];
            }
            n=n+dd;
        }

        System.out.println(n);
    }

    void date_to_words()
    {
        String d=""+dd;
        String year=""+yyyy;
        String s="";
        // here if dd is 1 then 1st,2 then 2nd, 3 then 3rd, after that th is there
        if(dd<=3)
        {
            s=d+day[dd]+month[mm]+year;
        }
        else if(dd>=4){

            if(dd>10)
            {
                int t=dd%10;
                if(t<=3)
                {

                    s=d+day[dd]+month[mm]+year;
                }
                else{
                    s=d+day[0]+month[mm]+year;
                }
            }
            else{
                s=d+day[0]+month[mm]+year;
            }
        }

        System.out.println(s);
    }

    int valid_date()
    {
        int flag=0;

        // checking if that date is between  0 and total day in that month
        if((mm>=1&&mm<=12) && yyyy>=1)
        {

            //leap year check
            if(((yyyy%4==0)&&(yyyy%100!=0))||(yyyy%400==0))
            {
                if(dd>=0&&dd<=lyear[mm])
                {
                    flag=1;
                }
                else
                {
                    flag=0;
                }
            }
            else
            {
                if(dd>=0&&dd<=nyear[mm])
                {

                    flag=1;
                }
                else
                {
                    flag=0;
                }
            }
        }
        else
        {
            flag=0;
        }
        return flag;
    }

    public static void main(String args[])
    {
        Validate obj=new Validate();
        obj.input();
        int c=obj.valid_date();
        if(c==0)
        {
            System.out.println("INVALID DATE");
        }
        else
        {
            System.out.println("VALID DATE");
            obj.date_numbers();
            obj.date_to_words();
        }
    }
}

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