```ruby
require 'open3'

class DocumentParser
  attr_accessor :title, :body

  def initialize(filename)
    @filename = filename
    to_hash
  end

  def tika_path
    Rails.root.join('vendor/java/tika-app-1.4.jar')
  end

  def output format = :text
    format_argument = format == :html ? "-h" : "-t"
    stdout, errors, _ = Open3.capture3 "java -jar #{tika_path} #{format_argument} #{@filename}"
    stdout
  end

  def title
    output.lines.detect { |l| l.present? }.strip
  end

  def body
    Nokogiri::HTML(output :html).css('body').children[1..-1].to_html.strip
  end

  def to_hash
    { title: title, body: body }
  end

  class << self
    def parse(filename)
      new(filename).to_hash
    end
  end
end
```

Remove attr_accessor as it's not needed
user
```ruby
require 'open3'

class DocumentParser
  def initialize(filename)
    @filename = filename
    to_hash
  end

  def tika_path
    Rails.root.join('vendor/java/tika-app-1.4.jar')
  end

  def output format = :text
    format_argument = format == :html ? "-h" : "-t"
    stdout, errors, _ = Open3.capture3 "java -jar #{tika_path} #{format_argument} #{@filename}"
    stdout
  end

  def title
    output.lines.detect { |l| l.present? }.strip
  end

  def body
    Nokogiri::HTML(output :html).css('body').children[1..-1].to_html.strip
  end

  def to_hash
    { title: title, body: body }
  end

  class << self
    def parse(filename)
      new(filename).to_hash
    end
  end
end
```
assistant