[GR-54159] Fontconfig head is null, check your fonts or fonts configuration about graal HOT 5 OPEN

SwingSample.java

package org.example;
import java.awt.*;
import javax.swing.*;
public class SwingSample {
    public static void main(String[] args) throws Exception {
        if (System.getProperty("rrr","").equals("")) {
            System.setProperty("java.home",".");
        }
        System.getProperties().list(System.out);
        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);
        });
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.example</groupId>
    <artifactId>jdk21graalvm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
    </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.example.SwingSample</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>