Question

in java

In a class called DomainParser, write a method getTopLevelDomain that accepts a URL in String format then returns the top level domain.

Files in the same directory:

ComDemo.java

Standard Input:

google.com

Required Output

Enter a String\n
Top level domain: com\n

Standard Input

google.co.in

Required Output

Enter a String\n
Top level domain: in\n

Answer 1

import java.util.Scanner;

class ComDemo {
    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Enter a String");
        String line = keyboard.nextLine();
        System.out.println("Top level domain: " + DomainParser.getTopLevelDomain(line));
    }
}

class DomainParser {
    public static String getTopLevelDomain(String domain) {
        int index = domain.lastIndexOf('.');
        if (index == -1) {
            return "";
        } else {
            return domain.substring(index + 1);
        }
    }
}

Enter a String google.com Top level domain: com Process finished with exit code 0