Java Timer

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static int x;
    public static void main(String[] args) throws Exception {
        x = 30 * 60 + 9;
        System.out.println(x);
        while(x != 0){
            x = x -1;
            show();
        }    
    }
   
    public static void show(){
        int hh = x /60;
        int ss = x - hh * 60;
        int hht1 = hh % 100 /10;
        int hht2 = hh % 10;
        int sst1 = ss % 100 /10;
        int sst2 = ss % 10;
        System.out.println("--------------");
        System.out.print(hht1);
        System.out.print(hht2);
        System.out.print(sst1);
        System.out.println(sst2);
        System.out.println("--------------");
    }
}

https://paiza.io/projects/FJ_pxjUT07pv51Ab7TWA4w