Zach Sugano questions

• Java NoSuchMethodException when getting constructor
• How to check that an uploaded file is a valid Image in Django
• How to convert a BufferedImage to 8 bit?
• Check if one date is exactly 24 hours or more after another
• Java how to check if a string value is a type of given Class<?>
• How do you detect a VPN or Proxy connection? [closed]
• How to replace HashMap Values while iterating over them in Java

Zach Sugano answers