Java program to reverse any number

public class Main {

	public static void main(String[] args) {
		// Reverse a number 
		// 3456 --> 6543
		
		int num = 3456; // 6543  // we can also take input from user
		int rev = 0;
		
		while(num != 0) {
		int n = num % 10;
		rev = rev * 10 + n;
		num = num/10;
		}
		System.out.println("Reverse number is : " + rev);
	}
}