Question

Q1) WebPageReader.java (40 Points) For this problem, you will use the sample code given in the textbook (Uploaded to Canvas) as a template. Modify the program so that it reads the webpage https://openlibrary.org/ and prints book category title and book category count as a table: No user input is required. Your challenge is understanding the structure of the web page contents and reading the correct data you are interested irn Title : Count Art 37,517 Fantasy 8,696 Biographies 5,326 Science 45,061 Recipes 4,235 Romance 15,112 Religion 40,643 Mystery And Detective Stories 6,666 Music 36,509 Medicine 21,022 Plays 1,479 History 934,627 Children 22,543 Science Fiction: 9,350 Textbooks14,128

For this problem, you will use the sample code given in the textbook (Uploaded to Canvas) as a
template.
Modify the program so that it reads the webpage https://openlibrary.org/ and prints book
category title and book category count as a table:
No user input is required. Your challenge is understanding the structure of the web page
contents and reading the correct data you are interested in.

In Java

sample text

import java.io.IOException;

import java.net.URL;

import java.util.Scanner;

/**

This program prints all lines from a web page that contain

references to other web sites.

*/

public class WebPageReader

{

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

{

String address = "http://horstmann.com/index.html";

URL pageLocation = new URL(address);

Scanner in = new Scanner(pageLocation.openStream());

while (in.hasNext())

{

String line = in.next();

if (line.contains("href=\"http://"))

{

int from = line.indexOf("\"");

int to = line.lastIndexOf("\"");

System.out.println(line.substring(from + 1, to));

}

}

}

}

Answer 1

Answer:

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/** This program prints all lines from a web page that contain references to

* other web sites. */

public class WebPageReader {

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

try {

URL url = new URL("https://openlibrary.org/");

BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));

String inputLine;

  

//formating output into table format

System.out.format("%20s%15s%8s", "Title","|", "Count");

System.out.println("\n-------------------------------------------");

  

// create pattern for split the data from HTML tag

final Pattern patternForTitle = Pattern.compile("<p class=\"category-title\">(.+?)</p>");

final Pattern patternForCount = Pattern.compile("<p class=\"category-count\" name=\"\">(.+?)</p>");

  

//iterate all HTML code

while ((inputLine = in.readLine()) != null) {

//check for books title

if(inputLine.contains("category-title")){

final Matcher matcherForTitle = patternForTitle.matcher(inputLine);

matcherForTitle.find();

  

//print category title

System.out.format("%32s%3s", matcherForTitle.group(1),"|");

}

//check for books count

if(inputLine.contains("category-count")){

final Matcher matcherForCount = patternForCount.matcher(inputLine);

matcherForCount.find();

String count = matcherForCount.group(1).split(" ")[0];

//print books count

System.out.format("%8s", count);

System.out.println();

}

}

in.close();

} catch (MalformedURLException me) {

System.out.println(me);

} catch (IOException ioe) {

System.out.println(ioe);

}

}

}

Output:

Markers Properties ServesConsole 3 Data <terminated> WebPageReader [Java Applicationl C:AProgram FilesJ Title Count Art Fantasy Biographies Science Recipes Romance Religion Mystery And Detective Stories Music Medicine Plays History Childrern Science Fiction Textbooks 37,525 8,709 5,333 45,088 4, 238 15,176 40, 648 6,675 36,520 21,037 1,479 934,861 22,560 9,361 14,130

Note: I have used https://openlibrary.org/ url for reading the category and books count.