Incrementing all digits by asking user a number

public class trial {

    public static void main(String args[])
    {
        Scanner src=new Scanner(System.in);
        System.out.println("Enter the number");
        int a= src.nextInt();
        int b=a;
        System.out.println("Enter the number by which each digit has to be increamented");
        int inc=src.nextInt();
        int n,n2,count=0,i=0;
        while(a>0)
        {
            n=a%10;
            count++;
            a=a/10;

        }
        int arr[]=new int[count];
        while(b>0)
        {
            n2=b%10;
            arr[i]=n2;
            b=b/10;
            i++;

        }
        /*for(int j=0;j<count;j++)
        {
        System.out.println("position "+j +" has value "+arr[j]);
        }*/
        int arr2[]=new int[count];
        int m=count-1;
        for(int k=0;k<count;k++)
        {
            arr2[k]=arr[m];
            m--;
        }
        /*for(int p=0;p<count;p++)
        {
        System.out.println("position "+p +" has value "+arr2[p]);
        }*/
        for(int q=0;q<count;q++)
        {
            arr2[q]=arr2[q]+inc;                //incrementing by given number
        }
       String arr3[]=new String[count];
       for(int r=0;r<count;r++)
       {
           arr3[r]=String.valueOf(arr2[r]);          //converting to string
       }

       String arrstring="";
       for(int s=0;s<count;s++)
       {
           arrstring=arrstring+arr3[s];
       }
       int numans=Integer.parseInt(arrstring);
       System.out.println();
       System.out.println("The final number after increamenting all digits is "+numans);

       /*numans++;                                // incrementing to confirm
       System.out.println(numans); */


    }
}