title: Search for text in PDF files
body: <p>I have a list of words about (86 words), and some PDF files.
  I would like to search for those words into PDF files and return values ​​tell me if exist.</p>
  
  <p>During research for solutions in tutorials I meet two problems:</p>
  
  <ol>
  <li><p>is that I'm forced to convert pdf file to file ??</p></li>
  <li><p>what is the simple bibilotheque that allows me to realize my problem, because I'm really stuck it there's a lot of examples (pdfbox, Appach Lucense, iText, pdftron ....)</p></li>
  </ol>