아는분이.. 낸 곱셈문제.. 덜덜덜;;;

import java.io.*;

public class ex8 {
 public static int check_num(int y){
  if(y <= 9){
   gop(y);
   y = 1;
  } else if(y > 9){
   System.out.println("Over 9 \n");
   y = 0;
  }
  return y;
 }
 
 public static void gop(int x){
  for(int i = 1; i <= 9; i++) {
   int c = x * i;
   System.out.println(x + "x" + i + " = " + c);
  }
 }
 
 public static void main(String ex8[])throws IOException {
  int che = 0;
 
  do {
   BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
 
   System.out.print("Number :");
   int b = Integer.parseInt(in.readLine());
   
   che = check_num(b);
  }while(che == 0);  
 }
}