Display Automorphic Numbers From 1 To Any Specific Range

This is a BlueJ program which will take the upper range and will display all the automorphic numbers starting from 1 to the specific number.

import java.io.*;

class AutoM

{

 int x,i,n,no,sqn,revNum=0,digit=0;

 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

 public void getNumber() throws Exception

 {

 System.out.println("Enter the upper range:");

 x=Integer.parseInt(br.readLine());

 for(int j=1;j<=x;j++)

 {

   n=j;

   digit=0;

   revNum=0;

 no=n;

do

{

   digit++;

  no=no/10;

 } while(no!=0);

 sqn=n*n;

 showR();

 }

 }

 public void showR()

 {

do

  {

   revNum=revNum*10+sqn%10;

   sqn=sqn/10;

   digit--;

   if(digit==0)

   break;

   }  while(true);

   revNum=revNumerse(revNum);

   if(n==revNum)

   System.out.println(n+" is an Automorphic number");

  }

 private int revNumerse(int n)

  {

   int r=0;

   while(n!=0)

   {

    r=r*10+n%10;

    n=n/10;

    }

    return r;

   }

   public static void main(String args[])throws Exception

   {

    AutoM obj=new AutoM();

    obj.getNumber();

    }

   }

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