[1.19.2] Unable to use external libraries at runtime (NoClassDefFoundError)

[SnakerBone]

Hi!

I've been trying to use external libraries like JOML (for animating) and Jsoup (for html parsing), It compiles fine, however at runtime if I call a class that uses one of these external libraries it crashes my game saying "ClassNotFoundException: {external library maven url here}".

Here's my relevant code:

// build.gradle

dependencies {
    minecraft "net.minecraftforge:forge:${mc_version}-43.2.0"
	
	// Other dependencies...	

    implementation "org.joml:joml:${joml_version}"
    implementation "org.jsoup:jsoup:${jsoup_version}"
}

// gradle.properties

joml_version=1.10.5
jsoup_version=1.16.1

// Class using external joml library (crashes when I call this method)

    public Quaternionf toQuatf(float x, float y, float z, float w)
    {
        return new Quaternionf(x, y, z, w);
    }

If I'm missing something please let me know! I'm not so familiar with Gradle as I originally used maven Poms/XMLs with Java xD

[ChampionAsh5357]

7 hours ago, SnakerBone said:

I've been trying to use external libraries like JOML (for animating) and Jsoup (for html parsing), It compiles fine, however at runtime if I call a class that uses one of these external libraries it crashes my game saying "ClassNotFoundException: {external library maven url here}".

 

First, use Mojang's math functions pre 1.19.3. If you want to use JOML, update to 1.19.3 or later, since Mojang switched off the library.

 

Second, non-mod artifacts need to be added using the `minecraftLibrary` configuration, so it gets picked up by the class loader.

[SnakerBone]

39 minutes ago, ChampionAsh5357 said:

First, use Mojang's math functions pre 1.19.3. If you want to use JOML, update to 1.19.3 or later, since Mojang switched off the library.

 

Second, non-mod artifacts need to be added using the `minecraftLibrary` configuration, so it gets picked up by the class loader.

Thanks 🙂 I wasn't aware mojang started using JOML in 1.19.3 my bad haha