Write a program to input a number and check whether it is a Cyclic number or not

A cyclic number is a number of "n" digits that when multiplied by 1, 2, 3,...n,
results in the same digits but in a different order. For example, the number 142,857
is a cyclic number since 142,857 x 2 = 285,714, 142,857 x 3 = 428,571, 142,857 x 4 = 571,428
and so on. It is not known just how many cyclic numbers exist.

import java.io.*;
public class Cyclic
{
    public boolean Check(int a, int b)
    {
        String x = ""+a, y = ""+b;
        int i, j , flag;
        if(x.length()!=y.length())
        return false;
        for(i=0;i<x.length();i++)
        {
            flag = 0;
            for(j=0;j<y.length();j++)
            {
                if(x.charAt(i)==y.charAt(j))
                {
                    flag = 1;
                    break;
                }
            }
            if(flag==0)
            return false;
        }
        return true;
    }
    public static void main()throws IOException
    {
        BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
        int x, i, a, flag=0;
        System.out.println("Enter a numberwa:");
        x = Integer.parseInt(r.readLine());
        Cyclic obj = new Cyclic();
        for(i=2;i<=9;i++)
        {
            a = i*x;
            if(obj.Check(x, a))
            {
                System.out.println(i+ "Cyclic Numbers: "+x+" & "+a);
                flag=1;
            }
        }
        if(flag==0)
        System.out.println("No cyclic numbers found.");
    }
}