Need help in installation of JAVA & Netbeans !!

[Ric Moore]

On 01/19/2012 02:34 AM, Navdeep Singh Sidhu wrote:
> hello
>
> Recently i reinstalled ubuntu on my laptop&  when i try to install
> netbeans on it, it's installer says compatible JDK not found but i
> had installed JDK 1.7.0_02 on it&  i followed these commands
>
> root at S13:/home/nika/Downloads# update-alternatives --config javac
> update-alternatives: error: no alternatives for javac.
> root at S13:/home/nika/Downloads# update-alternatives --install
> /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_02/bin/javac 1
> update-alternatives: using /usr/lib/jvm/jdk1.7.0_02/bin/javac to
> provide /usr/bin/javac (javac) in auto mode.
>
> but when i  tried javac command it gives following error
>
> root at S13:/home/nika/Downloads# javac bash: /usr/bin/javac: Permission
> denied
>
> so i remove it using
>
> root at S13:/home/nika/Downloads# update-alternatives --remove-all
> javac
>
>
> can i get some help?

Navdeep, I'd give this a try first, to properly install Java 7 with
minimal pain using a script that is in a .deb file that will download 
and install Java 7 for you.
http://www.webupd8.org/2012/01/install-oracle-java-jdk-7-in-ubuntu-via.html

Hope this helps! Namaskar, Ric