How do I get a JavaFX app running on codespaces

[danielcregg]

Hello,

How do I get a hello world javaFX app running in a codespace. When I run the javaFX application I would like to GUI to appear on a separate browser page or in a preview window in VScode. I used to be able to achieve this on GitPod using the repo below. It does not work on GitPod now. They updated the default java version updated to 11 and it does not contain javafx libraries anymore and now they need to be installed separately. Codespaces uses java 11 by default.

https://github.com/danielcregg/javaFX-gitpod-helloworld-basic

[danielcregg]

Is there anyone out there....???

[myersj]

I have the same problem. Did you find an answer?

[danielcregg]

No joy on codespaces. I got it working on GitPod. I can not figure out how to install the version of java I want with JavaFX included and also to visually display the javaFX gui you have to use a separate browser or else manually turn the port visibility to public and then load the GUI as a panel on the VScode window. This is all automated on GitPod.

[myersj]

Thank you for your reply.

[Chady00]

I am facing this error when I tried to run my javafx application on gitpod :
gitpod /workspace/Test (main) $ javac *.java && java javafxapplication4 Picked up JAVA_TOOL_OPTIONS: -Xmx3489m Note: Some input files use unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. Picked up JAVA_TOOL_OPTIONS: -Xmx3489m Exception in thread "main" java.lang.reflect.InvocationTargetException at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1085) Caused by: java.lang.UnsupportedOperationException: Unable to open DISPLAY at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$new$6(GtkApplication.java:202) at java.base/java.security.AccessController.doPrivileged(Native Method) at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.<init>(GtkApplication.java:200) at javafx.graphics/com.sun.glass.ui.gtk.GtkPlatformFactory.createApplication(GtkPlatformFactory.java:41) at javafx.graphics/com.sun.glass.ui.Application.run(Application.java:146) at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.startup(QuantumToolkit.java:290) at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:293) at javafx.graphics/com.sun.javafx.application.PlatformImpl.startup(PlatformImpl.java:163) at javafx.graphics/com.sun.javafx.application.LauncherImpl.startToolkit(LauncherImpl.java:659) at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:410) at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364) ... 5 more gitpod /workspace/Test (main) $

I am using this command to run it : javac .java && java javafxapplication4.javafxapplication4*