How to locate a string then get the following characters up to a certain character

Question

Here's an example input:

<div><a class="document-subtitle category" href="/store/apps/category/GAME_ADVENTURE"> <span itemprop="genre">Adventure</span> </a>  </div> <div> </div>

The string i'm trying to locate is this:

document-subtitle category" href="/store/apps/category/

and I want to extract the characters that follows that string up until the end of the href attribute (">).

In this case, my output should be:

GAME_ADVENTURE

My input file is guaranteed to have only one string that matches exactly to:

document-subtitle category" href="/store/apps/category/

What's the easiest way of achieving this?

Answer 1

This worked for me:

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

public class ExtractData {
  public static String matcher = "document-subtitle category\" href=\"/store/apps/category/";

  public static void main(String[] args) throws IOException {
    String filePath = args[0];
    String content = new String(Files.readAllBytes(Paths.get(filePath)));
    int startIndex = content.indexOf(matcher);
    int endIndex = content.indexOf("\">", startIndex);
    String category = content.substring(startIndex + matcher.length(), endIndex);
    System.out.println("category is " + category);
  }
}