Query on JDK installer?

I wanted to know if explicitly installing JDK on a machine is any different from copying the JDK folder to it from a machine where that JDK was installed?

Obviously yes..
You need to install it separately.Copying only the folder doesn't work.

Prashant

The explicit installation might do additional things like setup the Path & possible create an uninstall link.
Other than that - I really don't think there is any difference in the two approaches.

Prashant Langade wrote:Obviously yes..
You need to install it separately.Copying only the folder doesn't work.

Prashant

Ok. But what additional does the installer do?

Prashant Langade wrote:Obviously yes..
You need to install it separately.Copying only the folder doesn't work.

Prashant

Nopes. Coping Just the folder works!!

Obviously the only thing required for the folder to work is its PATH environment entrz.

Campbell Ritchie wrote:Obviously the only thing required for the folder to work is its PATH environment entrz.

and if you compile the way I was taught in college - by going into the bin directory you might not even have to do that!!!

The installation also updates your registry. Now I don't know if it only needs to do that to be able to use C:\WINDOWS\system32\java.exe and C:\WINDOWS\system32\javaw.exe, which are actually nothing more than wrappers that call the same executable from one of the actually installed JREs, but I still wouldn't try the simple copying myself, to be honest.