Write a Java program to get particulars of his/her birthday and display it as shown below. Use 3 variables to hold date, month and year.

In this we are taking date, month and year with three different variable and then check whether the date is valid or not. The below program shows how to check whether the data value is valid or not.

• Example

import java.util.*;

class GetBirthDate
{
	//get the birthdate of his or her
	public static void main(String args[])
	{
		int dt,month,year,leap=0,noOfDay=0;
		Scanner sc=new Scanner(System.in);
		
		System.out.println("Enter Birth Year");
		year=sc.nextInt();
		if(year>2019)
		{
			System.out.println("Year Is Invalid Please Enter Proper Year");
		}
		else
		{
			if(year%4==0)
			{
				leap=1;
			}
			
			System.out.println("Enter Birth Month");
			month=sc.nextInt();
		
			switch(month)
			{
				case 1:
					noOfDay=31;
					break;
				case 2:
					if(leap==1)
						noOfDay=29;
					else
						noOfDay=28;
					break;
				case 3:
					noOfDay=31;
					break;
				case 4:
					noOfDay=30;
					break;
				case 5:
					noOfDay=31;
					break;
				case 6:
					noOfDay=30;
					break;
				case 7:
					noOfDay=31;
					break;
				case 8:
					noOfDay=31;
					break;
				case 9:
					noOfDay=30;
					break;
				case 10:
					noOfDay=31;
					break;
				case 11:
					noOfDay=30;
					break;
				case 12:
					noOfDay=31;
					break;
			}
			if(month>12)
			{
				System.out.println("Month Is Invalid Please Enter Proper Month");
			}
			else
			{
				System.out.println("Enter Birth Date");
				dt=sc.nextInt();
				if(dt>noOfDay)
				{
					System.out.println("Date Is Invalid Please Enter Proper Date");
				}
				else
				{
					System.out.println("Your Birthday Is "+dt+"/"+month+"/"+year);
				}
			}
		}
	}
}

• Output

Enter Birth Year
2000
Enter Birth Month
12
Enter Birth Date
31
Your Birthday Is 31/12/2000