[news.eclipse.newcomer] PDT all-in-one can't enable Java plugin

[regady@xxxxxxxxxxx (Adam Solymos)]

Hi,

I installed (last month) Eclipse PDT All-in-one (Ganymede), and it works 
fine (to PHP development). There is JRE 1.6 in my PC.
I would like to learn Java and I tried to enable Java plugin in Eclipse 
(to create Java projects, Java source files, etc) but it failed. In 'Help 
> Software Updates > Installed Software' section I can't see anything 
about Java plugin (which is the basic Java plugin in Eclipse? I guess it 
is the JDT, isn't it?). I tried to enable JDT on the 'Avaible Software' 
tab (I selected the 'Eclipse Java Development Tools' and clicked to 
Install button) but it stopped at all times until downloading. I tried to 
download manually, but it failed too. (My internet connection is OK in 
other cases!)

Am I doing something wrong, or there are other problems?

Thanks, Adam

[sorry to my English]