This is my code and it is showing run time error-
import java.util.Scanner;
public class chewbaccaandnumber {
public static void main(String[] args) {
Scanner scn=new Scanner(System.in);
long n=scn.nextInt();
long ans=0;
long multiplier=1;
while(n!=0) {
long rem=n%10;
if(rem>=5) {
if(rem==9&&(n/10)==0) {
}else {
rem=9-rem;
}
}
ans =ans+(rem*multiplier);
n=n/10;
multiplier=multiplier*10;
}
System.out.println(ans);
}
}