you could download  it from this url :

https://sdlc5e.sun.com/ECom/EComActionServlet;jsessionid=B0E895A73FCD65381C59D451AC9683E4

try this mirror :
public.www.planetmirror.com/.../?fl=j

looks like non of them works
try using a proxy while downloading.
if it didn't work post another message to the list, I can upload it some where for you.

you can download  it via BitTirrent filesharing system
Here you can download the bittorrent file :

ts.searching.com/.../jdk_1_5_6_windows_i586_p_exe