Application working on Windows but not on Linux

Question

I have a weird problem. I have a .jar file that I need to run but when I run it on my Windows PC it works but when I run it on my Ubuntu server it doesn't work. I've installed default-jre on the Ubuntu machine and when I run it by java -jar {my name of file} it says this:

Error: Could not find or load main class {name of the class that is missing} Caused by: java.lang.NoClassDefFoundError: javafx/application/Application.

I've also installed openjfx and openjfx-source using apt-get install so:

apt-get install openjfx
apt-get install openjfx-source

My Windows java version: java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

My Ubuntu java version: openjdk version "10.0.2" 2018-07-17 OpenJDK Runtime Environment (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2) OpenJDK 64-Bit Server VM (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2, mixed mode)

What does `java -version` display on the Linux machine? (Add this to your question!) — Stephen C, Oct 07 '18 at 10:30
@StephenC java -version says this: openjdk version "10.0.2" 2018-07-17 OpenJDK Runtime Environment (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2) OpenJDK 64-Bit Server VM (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.2, mixed mode) — Mato Sustak, Oct 07 '18 at 10:32
OpenJDK does not include javafx: https://stackoverflow.com/q/34243982 — Jorn Vernee, Oct 07 '18 at 10:33
You could check whether they're in the right folder, or otherwise add them to the classpath manually — Jorn Vernee, Oct 07 '18 at 10:37
You could try adding the jars to the classpath either way, but beyond that I don't know. — Jorn Vernee, Oct 07 '18 at 10:41
Please add Linux _and_ Windows Java version to he question and how / where you installed fx — Marged, Oct 07 '18 at 11:14
Ubuntu only has openjfx packages for openjfx 8, so you'll have to use Java 8 for them to be applicable. If your need Java 9 or later, your best bet is to install Oracle's JRE and set it as default. — Itai, Oct 07 '18 at 11:38

score 0 · Accepted Answer · answered Oct 08 '18 at 15:01

0

I've found why it didn't work. The application was build to run on Java 8 and I've installed Java 11 on it. Now it works perfectly with Java 8.

answered Oct 08 '18 at 15:01

Mato Sustak

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Application working on Windows but not on Linux

1 Answers1