Counting Digit Frequency Of A Number Using Array

I have posted a similar program earlier but in this program I have used array to store the digits extracted from the number and then from the array the frequency of each digit is counted.

import java.io.*;

class Digit

{

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

 int i,j,temp,n,x=0;

int arr[]=new int[20];

 public void show() throws Exception

 {

  System.out.println("Enter the number:");

  n=Integer.parseInt(br.readLine());

  while(n > 0)

  {

   arr[x++]=n%10;

  n=n/10;

  }

 for(i=0;i< x-1;i++)

 {

  for(j=i+1;j< x;j++)

  {

   if(arr[i] > arr[j])

   {

    temp=arr[i];

    arr[i]=arr[j];

    arr[j]=temp;

    }

    }

    }

   n=arr[0];

   i=1;

   for(j=1;j< x; j++)

   {

    if(n==arr[j])

    i++;

    else

    {

     System.out.println("Digit="+n+" Frequency="+i);

     i=1;

     n=arr[j];

     }

    }

   }

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

  {

   Digit ob=new Digit ();

   ob.show();

 }

 }

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