PROGRAM : UNIQUE NUMBER A Number is Said to be unique if 1- it do not start with 0. 2- it do not have any repeating digit. for example: 0112 is not a unique no. 1234 is a unique no. SYNTAX: import java.io.*; class unique_num { public static void main(String args[])throws IOException { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); String s;int val=0; System.out.println("Enter a Number"); s=br.readLine(); if(s.charAt(0)=='0') System.out.println("**** The Number is Not a Unique Number ****"); else { for(int i=0;i<s.length();i++) ...