How to calculate Odd Even Number by java

OddEven.java

import java.util.Scanner;
public class OddEven {

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		System.out.println("Calculate the Odd or Even: ");
		//check odd even number...........
		int a=sc.nextInt();
		do{
			//check formula 10%2==0 ;
			if (a%2==0) {
				System.out.println("The number is Even.");
			}else {
				System.out.println("The number is Odd.");
			}
			a=sc.nextInt();
		}while(a>0);

	}

}