Every computer on the Internet has a unique identifying number, called an Intern

Question

Every computer on the Internet has a unique identifying number, called an Internet protocol (IP) address. To contact a computer on the Internet, you send a message to the computer’s IP address. Here are some typical IP addresses:



216.27.6.136

224.0.118.62



There are different formats for displaying IP addresses, but the most common format is the dotted decimal format. The above two IP addresses use the dotted-decimal format. It’s called “dotted” because dots are used to split up the big IP address number into four smaller numbers. It’s called “decimal” because decimal numbers are used (as opposed to binary) for the four smaller numbers.



Each of the four smaller numbers is called an octet because each number represents eight bits (oct means eight). For example, the 216 octet represents 11011000 and the 27 octet represents 00011011.



Implement an IpAddress class that stores an IP address as four octet ints.



You must implement all of the following:



Instance variables:

firstOctet, secondOctet, thirdOctet, fourthOctet – four int variables that store the octets for an IP address



Constructor:

This constructor receives one parameter, a dotted-decimal string. You may assume that the parameter’s value is valid (i.e., no error checking required). The constructor initializes the instance variables with appropriate values. There are many ways to solve the problem of extracting octets from the given dotted-decimal string. We recommend that you use String methods to extract the individual octets as strings, and then use the parseInt method of the Integer wrapper class to convert the octet strings to ints.



getDottedDecimal method:

Returns a string representing the IP address in dotted decimal notation.



getOctet method:

This method receives the position of one of the octets (1, 2, 3, or 4) and returns (as an int) the octet that’s at that position.



Provide a driver class that tests your IpAddress class. Your driver class should contain this main method:



public static void main(String[] args)

{

IpAddress ip = new IpAddress("216.27.6.136");

System.out.println(ip.getDottedDecimal());

System.out.println(ip.getOctet(4));

System.out.println(ip.getOctet(1));

System.out.println(ip.getOctet(3));

System.out.println(ip.getOctet(2));

} // end main



Using the above main method, your program should generate the following output.



Sample output:



216.27.6.136

136

216

6

27

Explanation / Answer

please rate - thanks you already have the driver class } the ip class

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