Birdman questions

• Downcasting a Graphics instance - Why is it allowed?
• How do I make the right click menu in a Console app appear?
• Captcha image - ASP.NET
• Thread hangs when creating ObjectInputStream
• Where does the returned value from e.g. a method call go if not filled into a declared variable of expected type?
• When is Request.Form["name"] null and when an empty string?
• "Storing" value types inside an ArrayList
• Accessing code-behind variables from page code
• Start CMD by using ProcessBuilder
• Long float-number output shows letters

Birdman answers