If a user-defined setting is created where the default constructor is not the first constructor declared, it will fail to initialize, resulting in an InternalError being thrown.

public class TestSetting extends SettingControl {
   public TestSetting(String text) {

   )
   public TestSetting() {
   )
   ...
)

java.lang.InternalError: Could not instantiate setting for class TestSetting
at jdk.jfr/jdk.jfr.internal.EventControl.instantiateSettingControl(EventControl.java:298)
at jdk.jfr/jdk.jfr.internal.EventControl.defineSetting(EventControl.java:259)
at jdk.jfr/jdk.jfr.internal.EventControl.defineSettings(EventControl.java:244)
at jdk.jfr/jdk.jfr.internal.EventControl.<init>(EventControl.java:221)
at jdk.jfr/jdk.jfr.internal.MetadataRepository.makeConfiguration(MetadataRepository.java:220)
at jdk.jfr/jdk.jfr.internal.MetadataRepository.register(MetadataRepository.java:150)
at jdk.jfr/jdk.jfr.internal.MetadataRepository.register(MetadataRepository.java:135)
at jdk.jfr/jdk.jfr.FlightRecorder.register(FlightRecorder.java:124)