determine if a number is palindrome in java

public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    int num = input.nextInt();
    int temp = num;

    int rev = 0;
    while (num > 0) {
        rev = rev * 10 + num % 10;
        num /= 10;
    }
    System.out.println(temp==rev?"palindrome":"not palindrome");
}