getResource() method returns null while loading font file, but why?

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So I am trying to use the library called PreferencesFX, which uses FontAwesomeFX which throws the following error.

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:567)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
    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:567)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
    at de.jensd.fx.fontawesomefx.commons/de.jensd.fx.glyphs.GlyphsFactory.loadFont(GlyphsFactory.java:64)
    at de.jensd.fx.fontawesomefx.commons/de.jensd.fx.glyphs.GlyphsFactory.<init>(GlyphsFactory.java:38)
    at de.jensd.fx.fontawesomefx.fontawesome/de.jensd.fx.glyphs.fontawesome.utils.FontAwesomeIconFactory.<init>(FontAwesomeIconFactory.java:28)
    at de.jensd.fx.fontawesomefx.fontawesome/de.jensd.fx.glyphs.fontawesome.utils.FontAwesomeIconFactory.get(FontAwesomeIconFactory.java:33)
    at com.dlsc.preferencesfx@11.7.0/com.dlsc.preferencesfx.view.UndoRedoBox.<init>(UndoRedoBox.java:17)
    at com.dlsc.preferencesfx@11.7.0/com.dlsc.preferencesfx.PreferencesFx.init(PreferencesFx.java:71)
    at com.dlsc.preferencesfx@11.7.0/com.dlsc.preferencesfx.PreferencesFx.<init>(PreferencesFx.java:64)
    at com.dlsc.preferencesfx@11.7.0/com.dlsc.preferencesfx.PreferencesFx.<init>(PreferencesFx.java:55)
    at com.dlsc.preferencesfx@11.7.0/com.dlsc.preferencesfx.PreferencesFx.of(PreferencesFx.java:102)
    at my.package.tryThis(Clusters.java:38)
    at my.package.Main.main(Main.java:17)
    ... 11 more
Caused by: java.lang.NullPointerException
    at de.jensd.fx.fontawesomefx.commons/de.jensd.fx.glyphs.GlyphsFactory.loadFont(GlyphsFactory.java:62)
    ... 21 more
Exception running application my.package.Main

I found the cause of the problem to sit at line 62 of the Glyphs Factory class but I have no idea how to fix it.

The method GlyphsFactory.class.getResource(pathToIconFont) returns null, instead of returning the font file. I can see that the method is loading the font file via path /de/jensd/fx/glyphs/fontawesome/fontawesome-webfont.ttf (which seem to be correct). I can see that the font is loaded from package de.jensd.fx.glyphs.fontawesome to package de.jensd.fx.glyphs but both packages are in different jars.

IntelliJ Screenshot

Any ideas why getResource() returns null? I reported it to the developer but it seems the FontAwesomeFX library is abandoned.

I am running this with newest IntelliJ on a Mac OS X Big Sur.

font-awesome javafx java
1 Answers

I was successful in patching the library (after reading this) by changing the following line.

Font.loadFont(GlyphsFactory.class.getResource(pathToIconFont).openStream(), 10.0D);

To this.

Font.loadFont(GlyphsFactory.class.getResourceAsStream(pathToIconFont), 10.0D);
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