How do I specify a filetype in a Google search?

Question

Is there a syntax to specify a filetype in a Google search? What is it? (I'm looking for PDFs.)

Answer 1

From Google Help about Special Search:

If you prefer to see a particular set of results without a particular file type included (for example, PDF), simply type “-filetype:pdf” within the search box along with your search term(s).

Actually, the correct syntax is – without the dash:

filetype:pdf

Answer 2

to search java pdf notes,type the following in google search bar

filetype:pdf java

and you will get all pdf's related to java. supported values for filetype are pdf,doc,mp3,xml,ppt etc and don't forget to include ":" between filetype and its value