Can we always reuse type names and variable names?

Hey again Michael! :)

In Java, you need to specifically declare what the variable's data type is. Some languages will already decide that a URL is in fact a URL (I know, that sounds silly but it's true) whereas Java has no idea what it is unless you tell specifically tell it.

So, in Java, we are free to do what we want, we can declare a URL like a string (As long as we use quotes). Note that the two sides must always be balanced though. So, we can do:

Uri myUri = Uri.parse("http://www.google.com/");

but we can't do

Uri myUri = "http://www.google.com/";
// Unbalanced!

because Java is expecting a Uri but instead gets a String (I'm using Uri's here instead of URL's because they are more convenient to use in Android thanks to the parse method.).

Hope this clarifies things and, if you have any more questions, give me a shout! :)