Query on JDK installer?

[Satya Maheshwari]

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?

[Prashant Langade]

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

Prashant

[Saifuddin Merchant]

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.

[Satya Maheshwari]

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?

[Saifuddin Merchant]

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!!

[Campbell Ritchie]

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

[Saifuddin Merchant]

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!!!

[Rob Spoor]

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.