Java class not found after building for Fedora

Support
1

Hey,

I’m using Fedora 24 and worked hard through the build.md file to try and make it work. After long and exhilirating messing around, fixing various weird problems, finally, I managed to get to the last step, and wrote
mvn clean package -DskipTests -Dmaven.javadoc.skip=true
Much to my surprise, this ran perfectly; No errors, warnings, nothing of the sort, and in the end it clearly stated “BUILD SUCCESS”.

Now I went on to type java -jar gui/target/shaded.jar in the hopes it would run. Much to my dismay, this is the error message I received:

[qq@qq bitsquare]$ java -jar gui/target/shaded.jar
Exception in thread "main" java.lang.NoClassDefFoundError: javafx/application/Application
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at io.bitsquare.app.BitsquareAppMain.doExecute(BitsquareAppMain.java:66)
	at io.bitsquare.app.BitsquareExecutable.execute(BitsquareExecutable.java:69)
	at io.bitsquare.app.BitsquareAppMain.main(BitsquareAppMain.java:61)
Caused by: java.lang.ClassNotFoundException: javafx.application.Application
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 15 more

Now I’m not exactly the most tech-savy guy out there. I tried working with google for a while, but I didn’t manage to produce a viable solution.
Could anyone provide any tips as to how I can finish this last step?

Thanks in advance.

2

Seems openJFX is not installed. JavaFX is not part of openJDK and needs to be installed extra if u dont use the Oracle jdk.

3

Hey again,

I thought i was using Oracle JDK (I have it installed), but turns out the ‘java’ command was linked to OpenJDK. Using Oracle JDK solved the problem, and I magically managed to run the program on Fedora.

Thanks a lot for the support! Althought I have to ask, why is it written in Java? Not exactly the best platform for such a project, don’t you think? Is there any rationale behind it?

4

Easier development and cross platform support. https://forum.bitsquare.io/t/why-use-java/1927