I have it... :
[angelo_dev@localhost ~]$ rpm -qa | grep openjdk
java-1.8.0-openjdk-headless-1.8.0.144-7.b01.fc27.x86_64


-----

I worked around very much to this problem ..
I also reinstalled fedora 27...

I remember one time I was able to install netbeans 8.. (I am not so sure this can be influenced but that time I installed it as root..).
When I rebooted the computer the installation doesn't worked any more..

My opinion actually is that NetBeans in not any more maintained from Oracle and because this it is not not so much affordable as it was in the past..

I continue to use NetBeans  with Fedora 21..


On Sun, Apr 22, 2018 at 10:51 PM, Samuel Sieb <samuel@sieb.net> wrote:
On 04/21/2018 01:59 AM, Angelo Moreschini wrote:
but
as well this , the output that I get running the .sh script is the same..

-------------------
root@localhost Downloads]# ./netbeans-8.2-linux.sh <http://netbeans-8.2-linux.sh>
Configuring the installer...
Searching for JVM on the system...
Extracting installation data...
Running the installer wizard...
Can`t initialize UI
Running in headless mode

Exception: java.awt.HeadlessException thrown from the UncaughtExceptionHandler in thread "main"
-------------------

now need to find another way .....

Another possible problem is that you only have the headless Java package installed.  If you haven't installed a Java application, you might not have the full version.  What does "rpm -qa | grep openjdk" show you?

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