Jar file won't open

[Coffee-9003]

I try opening the jar file but it doesn't do anything.

[skyecodes]

@CoffeeTheProto Have you tried running it from a command line?

[Shadowdragon019]

I'm getting this bug also. What's a command line?

[codedcosmos]

Disclaimer: Only run these commands with code you trust, you might end up installing a virus if it's random code you found on the internet.

Assuming you downloaded this to your Downloads folder You can open your terminal and type

cd Downloads
java -jar cmpdl-2.3.0.jar

Change the Downloads and cmpdl-2.3.0.jar as needed if if it's in another directory or the version changes.

[BeansBeefBroccoli]

I tried it and it did not work, it says: Error: Could not find or load main class com.github.franckyi.cmpdl.CMPDL

[skyecodes]

@peterodavies27atgmailcom Which version of Java are you using? CMPDL is only compatible with Java 8.

[BeansBeefBroccoli]

openjdk version "1.8.0_272" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_272-b10) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.272-b10, mixed mode)

[skyecodes]

AdoptOpenJDK doesn't include JavaFX, which CMPDL uses for the UI. You have to install OpenJFX (or build it if it's not available for your system). See https://stackoverflow.com/questions/18547362/javafx-and-openjdk

[BeansBeefBroccoli]

gluonhq.com/products/javafx

Do I install JavaFX Windows SDK or JavaFX Windows jmods or something else?

[skyecodes]

Gluon only distributes JavaFX starting from version 11, and you need version 8 to run CMPDL. Honestly, since you're using Windows, I think the easiest way to fix your issue would be to use the Oracle JRE instead of AdoptOpenJDK. You can download it here https://java.com/en/download/manual.jsp

[BeansBeefBroccoli]

ok

[Klotzi111]

Acctually you can also use newer versions of Java (AdoptOpenJDK is fine if you also install openjfx (https://openjfx.io/)) and with it JavaFX . The command you need to run it from command line would be: java --module-path "%JAVAFX_HOME%\lib" --add-modules javafx.controls,javafx.fxml -jar cmpdl-2.3.0.jar You have to replace %JAVAFX_HOME% with the file path to where you have JavaFX installed to. For example: C:\Program Files\Java\JavaFX\javafx-sdk-15.0.1 Or more advanced: Create a environment variable with that name and the file path.

[u6f]

I've tried what you said but i'm getting the error "Error occurred during initialization of boot layer java.lang.LayerInstantiationException: Package jdk.internal.jimage in both module jrt.fs and module java.base"

[skyecodes]

This application is only compatible with Java 8

[u6f]

This application is only compatible with Java 8

Switched to java 8 and get this Error: Could not find or load main class com.github.franckyi.cmpdl.CMPDL

[Klotzi111]

I've tried what you said but i'm getting the error "Error occurred during initialization of boot layer java.lang.LayerInstantiationException: Package jdk.internal.jimage in both module jrt.fs and module java.base"

Okay for me this works even with OpenJDK adoptium.net Temurin java 20 (@skyecodes). To diagnose this we need more info about your system. We need:

• OS (Windows 10/11, Linux (what distro), ...)
• Architecture (x86, x86_64, arm64, ...)
• Java Version (with install path)
• JavaFX Version (with install path)
• A screenshot of the window telling you about the error
• The Version of CMPDL and where you downloaded it from