<AWT Dev> "java.lang.Error: Probable fatal error:No fonts found" does not show on 11

[Philip Race]

Wrong list. You want 2d-dev.

-phil.

On 2/27/19, 3:26 PM, Bernd Eckenfels wrote:
> Hello,
>
> (please let me know in case I picked the wrong list.)
>
> Since OpenJDK does not ship Default *.ttf font files the change that a JRE is installed in a way that no System Fonts can be found is quite high.
>
> In OpenJDK8 it is a bit unfortunate that in this situation even for the headless graphics context that you can can a Java.lang.Error:
>
> I wonder if this is intentional. How About returnign an empty Array or Maybe a RntimeException instead? In my case by upgrading from Oracle JRE to Open JDK (in my case Azul) a perfectly fine working Installation is not aborting.
>
> The JasperReports component used is failing does not even need the System Fonts (which I will report to them seperately). For Zulu it is enough to install Dejavu Fonts in System Directory or copy them to JRE/lib/fonts/, but I have also seen OpenJDK  builds which seem to use fontmanager libraries instead of fixed file path. Here I guess the dependency on System config is even higher.
>
> I tested on a minimal System with no X11:
>
>> ls /usr/share/fonts
>> cat /etc/centos-release
> CentOS Linux release 7.3.1611 (Core)
>
> And my test program (below) Returns for Java 8:
>
>> zulu8*x64/bin/java -cp .  FontTest
> Are we headless? true
> g = sun.java2d.HeadlessGraphicsEnvironment headless: true
> Exception in thread "main" java.lang.Error: Probable fatal error:No fonts found.
>          at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1236)
>          at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
> …
>          at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
>          at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
>          at sun.font.SunFontManager.initialiseDeferredFonts(SunFontManager.java:927)
>          at sun.font.SunFontManager.loadFonts(SunFontManager.java:3302)
>          at sun.awt.X11FontManager.loadFonts(X11FontManager.java:466)
>          at sun.font.SunFontManager.loadFontFiles(SunFontManager.java:3429)
>          at sun.font.SunFontManager.getInstalledFontFamilyNames(SunFontManager.java:3766)
>          at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:225)
>          at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:252)
>          at sun.java2d.HeadlessGraphicsEnvironment.getAvailableFontFamilyNames(HeadlessGraphicsEnvironment.java:94)
>          at FontTest.main(FontTest.java:15)
>
> So the error in itself is one topic I wanted to inquire About. However, even worse in OpenJDK 11 the error seems to have degenerated quite a bit, it Looks for me:
>
>> zulu11*x64/bin/java -cp .  FontTest
> Are we headless? true
> g = sun.java2d.HeadlessGraphicsEnvironment headless: true
> Exception in thread "main" java.lang.InternalError: java.lang.reflect.InvocationTargetException
>          at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:86)
>          at java.base/java.security.AccessController.doPrivileged(Native Method)
>          at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
>          at java.desktop/sun.java2d.SunGraphicsEnvironment.getFontManagerForSGE(SunGraphicsEnvironment.java:189)
>          at java.desktop/sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:223)
>          at java.desktop/sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:251)
>          at java.desktop/sun.java2d.HeadlessGraphicsEnvironment.getAvailableFontFamilyNames(HeadlessGraphicsEnvironment.java:75)
>          at FontTest.main(FontTest.java:15)
> Caused by: java.lang.reflect.InvocationTargetException
>          at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
>          at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
>          at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>          at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
>          at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:84)
>          ... 7 more
> Caused by: java.lang.NullPointerException
>          at java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262)
>          at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:225)
>          at java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:107)
>          at java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:719)
>          at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:367)
>          at java.base/java.security.AccessController.doPrivileged(Native Method)
>          at java.desktop/sun.font.SunFontManager.<init>(SunFontManager.java:312)
>          at java.desktop/sun.awt.FcFontManager.<init>(FcFontManager.java:35)
>          at java.desktop/sun.awt.X11FontManager.<init>(X11FontManager.java:56)
>          ... 12 mor
>
> If there is no known issue for that, is it worth to file a Bug for it? (I Need to recreate it with a Oracle OpenJDK binary yet if it is only a fontconfig Problem – but in that case a null check is probably also a good thing?)
>
> Gruss
> Bernd