Question

I am learning regex and am looking to search a url for any possible image extension (jpg, jpeg, png, gif .. etc) AND if the file extension of the URL is an image.

I want to replace any %20 or spaces with plus signs +

How can this be done?

www.test.com/this/is/an/image&20with%20spaces.jpg 
www.test.com/this/is/an/image+with+spaces.jpg 

Answer 1

You’ll have to do this in two lines, the way I see it.

Pattern imagePattern = Pattern.compile("\\.(png|gif|jpg|jpeg)$", Pattern.CASE_INSENSITIVE);
if (imagePattern.matcher(input).find())
  input = input.replaceAll("(%20)|\\s", "+");