Netbeans 8.1 doesn't work in Ubuntu 18.04 by Netbeans 8.2 can be installed by ubuntu-make with umake ide netbeans and it works in 18.04, but I don't think it's worth installing in Ubuntu 18.04 because the Eclipse snap package (eclipse Extensible Tool Platform and Java IDE) is a much better IDE for Java than Netbeans in 18.04.

I'am a student and my professor want us to use netbeans :(

Your professor and you will be happy to know that Netbeans 8.2 works in 18.04.

I will try it and will let you know

but why isn't it working on 18.04?

Netbeans 8.2 doesn't have any problem recognizing openjdk-11-jdk automatically in 18.04. Netbeans 8.1 does not recognize openjdk-11-jdk automatically in 18.04, and it does not recognize openjdk-8-jdk either, even when openjdk-8-jdk is selected as the default java.

I don't have jdk 11

openjdk-11-jdk isn't Java 11, it's just a funny package name in 18.04. I uninstalled it and tried opening Netbeans 8.1 with only openjdk-8-jdk installed and it didn't recognize openjdk-8-jdk either.

I tried umake ide netbeans but it throws segmentation fault

Oh no, umake is so weird. It worked on mine a few weeks ago. I think your professor wants you to download the JDK 8u171 with NetBeans 8.2 bundle from the official Oracle website and install that. I feel sorry for you because the Eclipse Extensible Tool Platform and Java IDE snap package is much better than Netbeans. It's a fun IDE.

I have downloaded netbeans 8.2.sh.I will try that.If that doesn't work I will try your link

This is a screenshot of my Netbeans 8.2 in 18.04. You can click on the screenshot with the middle mouse button to view it as a larger image in a new browser tab. umake is so weird that if you didn't see it maybe you wouldn't even believe that I installed Netbeans 8.2 with umake in Ubuntu 18.04, but I did.

I finally installed it using the latest .sh script from netbeans

and it works

This isn't just an 18.04 thing. Netbeans was buggy in 16.04 too.

I hate netbeans

I'm done with Netbeans.

btw PyCharm Community Edition was crap in 16.04 but it works real good in 18.04.

I can't create a new project

The button gets pressed but does nothing

I had that bug with Netbeans in 16.04 too. Netbeans 8.2 works alright in 18.04 including creating a new project, but the problem is getting umake to install it.

I press the button but nothing happens :(

Jesus Christ

You were right after messing with the config file I get it to work

I'm glad that you got it sorted. You can post an answer to your own question if you want to share what you did.

I will post it later as an answer with the link I found