Not really. It would take hours at even the fastest dial-up speed. Probably you should find a friend with a fast Internet connection and try the "Windows Offline Installation". This will download a 77MB file that you can copy to a flash drive or CD ROM and move to your computer. Execute the file on your computer to install java.
Now should see something like:
Pick Platform: Windows (or whatever your platform is).
Pick Multi-language (which is your only choice).
Click the "I agree" box
Click Continue.
Does this installation work for a Mac?