Question

Write a program, which will find all such numbers between 1000 and 3000 (both included) such that each digit of the number is an even number.

The numbers obtained should be printed in a comma-separated sequence on a single line.

Answer 1

public class EvenDigits
{
    public static void main(String[] args)
    {
        for(int i=1000;i<=3000;i++)
        {
            int n=i;
            if(n%2==0)
            {
                int d1 = n%10;  //d1 becomes units digit
                n = n/10;

                int d2 = n%10;  //d2 becomes tens digit
                n = n/10;
                
                int d3 = n%10;  //d3 becomes hundreds digit
                n = n/10;
                
                int d4 = n;     //d4=n is now the thousands digit
                
                if((d1%2==0)&&(d2%2==0)&&(d3%2==0)&&(d4%2==0))
                {
                    System.out.print(i+", ");
                }
            }
        }
    }
}