skoret / graphs-visualization-sandbox

graphs-visualization-sandbox

Sample project for graphs visualization with TornadoFX (readme on russian)

Setup

• Intellij IDEA 2020.3.2
• Java 11.0.10 (x86_64) AdoptOpenJDK
• Gradle 6.8.3
• Kotlin 1.4.32
• TornadoFX 1.7.20
• JavaFX 11.0.2
• OpenJFX JavaFX Gradle Plugin 0.0.9

Build & Run

Build: ./gradlew build or gradlew.bat build on Windows
Run: ./gradlew run or gradlew.bat run on Windows
Or open, build and run project from Intellij IDEA

Troubleshooting

👻 java.lang.UnsupportedClassVersionError: org/openjfx/gradle/JavaFXPlugin has been compiled
by a more recent version of the Java Runtime (class file version 55.0),
this version of the Java Runtime only recognizes class file versions up to 52.0

💡 Most likely, Java SDK version 8 (the same 52.0) is installed in the configuration of your project, but JavaFXPlugin was compiled and can only work with Java SDK version 11 (the same 55.0) | source

✅ Install Java SDK 11 (I have AdoptOpenJDK, for example). Probably will work with version 15 too. Next, we check that the settings in IDEA are set correctly:

• File | Project Structure... | Project Settings | Project | Project SDK = 11
• Preferences | Build, Execution, Deployment | Build Tools | Gradle | Gradle JVM = Project SDK
• NB: do not forget to click "OK" to save the settings

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👻 Error: JavaFX runtime components are missing, and are required to run this application

💡 There is some kind of magic inside JavaFX, but I don't want to go into details. There is a solution, but you can read more in the source

✅ Separate our main class MainApp: App from the actual launch of the application. I.e. we extract the main function from MainApp class and call TornadoFX launch from it, e.g.:

class MainApp: App(MainView::class, Styles::class)

fun main(args: Array<String>) { launch<MainApp>(args) }

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