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  1. JDK
  2. JDK-8298266

"java.home property not set" error in Graal when sun.awt.fontconfig java property is set on Windows

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    • 2d
    • generic
    • windows

      Create a native image of a Swing application using GraalVM and run it with -Dsun.awt.fontconfig=fontconfig.properties.src java property. java.lang.Error: java.home property not set error is thrown.

      For more details see GraalVM issue " graal 22.2.0 ... java awt java.home property not set ... #4875 ":
      https://github.com/oracle/graal/issues/4875

      Steps to reproduce:

      - Download graal 22.3.0 jdk 19 for Windows from GraalVM Community Edition 22.3.0 page:
        https://github.com/graalvm/graalvm-ce-builds/releases/tag/vm-22.3.0

      - Install native-image
      > graalvm-ce-java19-22.3.0\bin\gu.cmd install native-image

      - Create and compile SwingSample.java sample
      ```
      import java.awt.*;
      import javax.swing.*;

      public class SwingSample {
          public static void main(String[] args) throws Exception {
              SwingUtilities.invokeAndWait(() -> {

                  JFrame frame = new JFrame("Hello World");

                  JButton button = new JButton("Hello");
                  button.addActionListener(e -> {
                      System.out.printf("Hello, World!%n");
                  });

                  JPanel panel = new JPanel(new FlowLayout());
                  panel.add(button);

                  frame.add(panel);
                  frame.setSize(400, 300);
                  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                  frame.setVisible(true);
              });
          }
      }
      ```

      - Run native-image-agent to generate configuration files
      > graalvm-ce-java19-22.3.0\bin\java.cmd -agentlib:native-image-agent=config-output-dir=conf-dir SwingSample

      - Copy graalvm-ce-java19-22.3.0\lib\fontconfig.properties.src file to the sample dir

      - Generate native image with configuration files and -Djava.awt.headless=false , -Dsun.awt.fontconfig=fontconfig.properties.src java properties

      > call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64"
      > graalvm-ce-java19-22.3.0\bin\native-image.cmd --no-fallback -Djava.awt.headless=false -Dsun.awt.fontconfig=fontconfig.properties.src -H:ResourceConfigurationFiles=conf-dir/resource-config.json -H:SerializationConfigurationFiles=conf-dir/serialization-config.json -H:ReflectionConfigurationFiles=conf-dir/reflect-config.json -H:JNIConfigurationFiles=conf-dir/jni-config.json SwingSample

      - Run the native image with -Dsun.awt.fontconfig=fontconfig.properties.src java property.

      > swingsample.exe -Dsun.awt.fontconfig=fontconfig.properties.src

      Exception in thread "main" java.lang.reflect.InvocationTargetException
              at java.desktop@19.0.1/java.awt.EventQueue.invokeAndWait(EventQueue.java:1371)
              at java.desktop@19.0.1/java.awt.EventQueue.invokeAndWait(EventQueue.java:1346)
              at java.desktop@19.0.1/javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1480)
              at SwingSample.main(SwingSample.java:7)
      Caused by: java.lang.Error: java.home property not set
              at java.desktop@19.0.1/sun.awt.FontConfiguration.findFontConfigFile(FontConfiguration.java:180)
              at java.desktop@19.0.1/sun.awt.FontConfiguration.<init>(FontConfiguration.java:97)
              at java.desktop@19.0.1/sun.awt.windows.WFontConfiguration.<init>(WFontConfiguration.java:41)

            alexsch Alexandr Scherbatiy
            alexsch Alexandr Scherbatiy
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              Created:
              Updated:
              Resolved: