Issue with Netbeans on Linux Mint

Question

I just installed Netbeans using the script on Oracle's website and I'm having some trouble getting it to work. After opening Netbeans I went to open up a simple .java file just to test it out and got this error:

"The JDK is missing and is required to run some Neatbeans modules. Please use the --jdkhome command line option to specify a JDK installation or see http://wiki.netbeans.org/FaqRunningOnJre for more information."

I have OpenJDK, and I'm not sure what's meant by using the --jdkhome command line option. I also visited the wiki and it's about doing a full installation of JDK, which I don't think I should need to do. Any help is appreciated.

Answer 1

I think it's better to use Oracle Java JDK rather than Open JDK if you want to use Netbeans for java development

You can use this link to set Oracle Java JDK in Linux Mint

So, it's better to follow theses instructions (JDK install) prior to Netbeans install and all things will go well.

Steps:

1-Remove OpenJDK installation
  sudo apt-get update && apt-get remove openjdk*

2- Download Oracle JDK you want to install (for example JDK 8)
   Download the *.tar.gz one.
   example for current version: jdk-8u65-linux-x64.tar.gz

3- Extract the file and create a folder where to move it
   tar -zxvf jdk-8u65-linux-x64.tar.gz
   sudo mkdir -p /opt/java
   sudo mv jdk1.8.0_65 /opt/java

4- Make JDK system default
   sudo update-alternatives --install "/usr/bin/java" "java"  
        "/opt/java/jdk1.8.0_65/bin/java" 1

   sudo update-alternatives --set java /opt/java/jdk1.8.0_65/bin/java

At this stage, you can start the installation of Netbeans IDE and it will automatically detect your Oracle JDK setting

I tested a short HelloWorld Java example, and I don't have any issue.

Here is the setting JDK view in Netbeans:

If you want to add the JAVA Home dir to your system

Proceed like this

You have to be in root mode and then edit this file: /etc/bash.bashrc and add:

#JAVA HOME 
JAVA_HOME=/opt/java/jdk1.8.0_65 
export JAVA_HOME 
PATH=$PATH:$JAVA_HOME/bin 
export PATH

Reboot your Mint system

Now you'll have javac working in command line...