如何在java8中读取文件中两个给定模式之间的文本

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class FileTextReader {
    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt";
        String startPattern = "start";
        String endPattern = "end";

        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            StringBuilder sb = new StringBuilder();
            String line;
            boolean isBetweenPatterns = false;

            while ((line = reader.readLine()) != null) {
                if (line.contains(startPattern)) {
                    isBetweenPatterns = true;
                }

                if (isBetweenPatterns) {
                    sb.append(line).append("\n");
                }

                if (line.contains(endPattern)) {
                    isBetweenPatterns = false;
                    break;
                }
            }

            String result = sb.toString();
            System.out.println(result);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}