Jumping Number in Java

A Jumping Number is a number in which each adjacent digit differs by only 1. For example, 76789 is a Jumping Number. Also note that all the one-digit numbers are considered to be Jumping Numbers. Write a program in Java to input a positive integer and check whether it is a Jumping Number. Display a suitable message accordingly. 

 import java.io.*;

 class Jumping

{

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

{

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

 System.out.print("Enter a positive integer: ");

 int num = Math.abs(Integer.parseInt(br.readLine()));

 int copy = num;

 boolean status = true;

 int diff = 0; 

 while(num != 0)

{ 

 int d1 = num % 10; 

 num /= 10;

 if(num != 0)

{

 int d2 = num % 10; 

 if(Math.abs(d1 - d2) != 1)

{

 status = false;

 break;

 }

 }

 }

 if(status)

 System.out.println(copy + " is a jumping number."); 

 else 

 System.out.println(copy + " is NOT a jumping number.");

 }

 }