public static void main(String[] args) {
        
        // Class with pattern
        class MyRegex {
            String pattern = "^((25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9]?[0-9])$";
            }
            
        // Create a class and Scanner instances
        MyRegex myRegex = new MyRegex();
        Scanner sc = new Scanner(System.in);
				
        // Iterate on input ip addresses
        while (sc.hasNext()) {
            String str = sc.next();
						
            // Print true if it matches or false if it doesn't
            System.out.println(str.matches(myRegex.pattern));
        }
        // Close the Scanner
        sc.close();
    }