Testing whether custom events in JFR can contain arrays

JFRArrayTest.java

import jdk.jfr.*;
import jdk.jfr.consumer.*;
import java.nio.file.*;

class ArrayEvent extends Event {

    @Label("String Array")
    String[] stringArray;

    @Label("Int Array")
    int[] intArray;

    @Label("Long Array")
    long[] longArray;

    @Label("Non array field")
    String nonArrayField = "default";
}

public class JFRArrayTest {
    public static void main(String[] args) throws Exception {
        Path recording = Path.of("test_array.jfr");
        try (Recording r = new Recording()) {
            r.enable("test.ArrayEvent");
            r.start();
            ArrayEvent event = new ArrayEvent();
            event.stringArray = new String[]{"one", "two", "three"};
            event.intArray = new int[]{1, 2, 3, 4, 5};
            event.longArray = new long[]{100L, 200L, 300L};
            event.commit();
            r.stop();
            r.dump(recording);
        }
        // Now read it back
        try (RecordingFile rf = new RecordingFile(recording)) {
            while (rf.hasMoreEvents()) {
                RecordedEvent e = rf.readEvent();
                System.out.println("Event type: " + e.getEventType().getName());
                for (var field : e.getEventType().getFields()) {
                    System.out.println("  Field: " + field.getName() + " type=" + field.getTypeName());
                }
            }
        }
    }
}