Java輸入数字反转輸出改進版(Long版)

import java.util.Scanner;

class  Test
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);

long num=sc.nextLong();
System.out.println("Enter a number (-1 to end):"+num);
long result=0;
int i=0;
while(true)
{
long n=num%10;
if(n==-1){
break;
}
i++;
System.out.println("Digit"+i+" = "+n);
result=result*10+n;
num=num/10;

if(num==0)
{
break;
}
}
}
}

result

Enter a number (-1 to end): 3467895557789999906 ↵
Digit1 = 6
Digit2 = 0
Digit3 = 9
Digit4 = 9
Digit5 = 9
Digit6 = 9
Digit7 = 9
Digit8 = 8
Digit9 = 7
Digit10 = 7
Digit11 = 5
Digit12 = 5
Digit13 = 5
Digit14 = 9
Digit15 = 8

Digit16 = 7
Digit17 = 6
Digit18 = 4
Digit19 = 3