java.lang.NoClassDefFoundError: sun.font.SunFontManager exception when moving from oracle jdk 8 to corretto jdk 1.8.0_362.

[sagar21304]

Describe the bug

java.lang.NoClassDefFoundError: sun.font.SunFontManager exception when moving from oracle jdk to corretto jdk 1.8.0_362.

To Reproduce

Build a jar which uses sun.font.SunFontManager with oracle jdk 8 and then migrate to corretto jdk jdk 1.8.0_362.

Expected behavior

It should not throw an java.lang.NoClassDefFoundError: sun.font.SunFontManager exception

Screenshots

May 18, 2023 7:14:15 AM
SEVERE: java.lang.NoClassDefFoundError: sun.font.SunFontManager
May 18, 2023 7:14:15 AM
SEVERE: at java.lang.Class.forName0(Native Method)
May 18, 2023 7:14:15 AM
SEVERE: at java.lang.Class.forName(Class.java:348)
May 18, 2023 7:14:15 AM
SEVERE: at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:82)
May 18, 2023 7:14:15 AM
SEVERE: at java.security.AccessController.doPrivileged(Native Method)
May 18, 2023 7:14:15 AM
SEVERE: at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
May 18, 2023 7:14:15 AM
SEVERE: at sun.java2d.SunGraphicsEnvironment.getFontManagerForSGE(SunGraphicsEnvironment.java:190)
May 18, 2023 7:14:15 AM
SEVERE: at sun.java2d.SunGraphicsEnvironment.getAllFonts(SunGraphicsEnvironment.java:209)

Platform information

OS: Windows Server 2019 Datacenter ,64 bit ]
Version : java -version

openjdk version "1.8.0_362"
OpenJDK Runtime Environment Corretto-8.362.08.1 (build 1.8.0_362-b08)
OpenJDK Server VM Corretto-8.362.08.1 (build 25.362-b08, mixed mode)

Additional context

It seems sun.font.SunFontManager class is not part of corretto jre 1.8.0_362. However, its working with corretto 11 without any problem.

Expectation: How to load sun.font.* with corretto jre 1.8.0_362 to resolve this issue? What should I do to resolve this?

[benty-amzn]

I've done a quick local test and wasn't able to reproduce this issue.
The class is part of corretto-8, located at SunFontManager.java.

Is there any additional information you can share that might help reproduce the issue? A minimal code snippet and any command line flags you're using to launch your application might help.

[sagar21304]

Thank you for quick analysis and response. Yes. I also verified that SunFontmanager is part of corretto 8 jdk.
But question is, is it part of corretto-8 jre? I mean is it packaged into corretto 8 jre?
If yes. In which dll or jar or exe it is packaged? If no, what would be feasible way to resolve this issue? could you confirm?
When I am compiling a jar with "1.8.0_362" corretto jdk and using corretto 11 jre , its working fine. But it's not working with same version of "1.8.0_362" corretto jre.
Is there any specific setting or configuration or package or font related stuff is required?

[sagar21304]

One more input: This an runtime exception i am getting. I am able to compile code successfully.

[eastig]

Hi @sagar21304
I checked https://corretto.aws/downloads/resources/8.372.07.1/amazon-corretto-8.372.07.1-windows-x86-jre.zip.
SunFontManager class is present in lib/rt.jar:

rt.jar/uzip://sun/font:
SunFontManager.class 48857 Apr 17 23:01

You need to check how you run your application, especially whether you redefine classpaths.

[sagar21304]

Hi @eastig,

Thank you for your input. What should be the classpath to access SunFontManager.class? Could you please confirm?

[sagar21304]

Hi @eastig, there is no change in classpath. Is there any specific change required for corretto 8 classpath?

We are loading a jar file using jni api in c++ apllcation.This a classpath passing to jvm.
Djava.class.path=..\lib;..\lib\VCSGui.jar;..\lib\VxHelpViewer.jar;..\jre\lib\rt.jar;..\lib\gui_images.jar;
..\lib\sounds.jar;..\lib\VxHelpViewerl10n.jar;..\lang;C:\Program Files (x86)\VVVVVV\Cluster Manager\EAT\bin\AtWrapper.jar

Its working fine with corretto 11 jre. But its not working with corretto 8 jre. Is there anything specific to corretto 8?

[eastig]

Hi @sagar21304,

Do you use JNI_CreateJavaVM?

I think you might have some configuration issues with it.

Djava.class.path=..\lib;..\lib\VCSGui.jar;..\lib\VxHelpViewer.jar;..\jre\lib\rt.jar;..\lib\gui_images.jar;

I see you have rt.jar in the java.class.path. rt.jar is a Java system jar file and java.class.path is not intended for it. java.class.path is for user's classes/jars.

Can you trace class loading?

[eastig]

Is there anything specific to corretto 8?

There is nothing specific regarding classpath needed for corretto 8.

[sagar21304]

Hi @eastig,

Thank you for your response. Yes. We are using JNI_CreateJavaVM. After removing rt.jar from the java.class.path its not working with corretto 8 jre.

[jamesmancz]

@sagar21304 We're experiencing the same issue; did you find a solution/workaround?

[jamesmancz]

Found a fix for this. Simply install the fontconfig Linux package on your VM/in your container image.