Uses of Annotation Interface jdk.jfr.MetadataDefinition (Java SE 26 & JDK 26)
Description: use: module: jdk.jfr, package: jdk.jfr, annotation type: MetadataDefinition

# Uses of Annotation Interface
jdk.jfr.MetadataDefinition

Packages that use MetadataDefinition
Package
Description
jdk.jfr
This package provides classes to create events and control Flight Recorder.

- ## Uses of MetadataDefinition in jdk.jfr

  Classes in jdk.jfr with annotations of type MetadataDefinition
  Modifier and Type
  Class
  Description
  `@interface`
  `BooleanFlag`
  Event field annotation, specifies that the value is a boolean flag, a `true` or `false` value.
  `@interface`
  `Category`
  Event annotation, to associate the event type with a category, in the format of a human-readable path.
  `@interface`
  `ContentType`
  Meta annotation, specifies that an annotation represents a content type, such as a time span or a frequency.
  `@interface`
  `Contextual`
  Event field annotation, specifies that the value carries contextual information.
  `@interface`
  `DataAmount`
  Event field annotation, specifies that a value represents an amount of data (for example, bytes).
  `@interface`
  `Description`
  Annotation that describes an element by using a sentence or two.
  `@interface`
  `Enabled`
  Event annotation, determines if an event should be enabled by default.
  `@interface`
  `Experimental`
  Annotation that specifies that an element is experimental and may change without notice.
  `@interface`
  `Frequency`
  Event field annotation, specifies that the value is a frequency, measured in Hz.
  `@interface`
  `Label`
  Annotation that sets a human-readable name for an element (for example, `"Maximum Throughput"`).
  `@interface`
  `MemoryAddress`
  Event field annotation, specifies that the value is a memory address.
  `@interface`
  `Name`
  Annotation that sets the default name for an element.
  `@interface`
  `Percentage`
  Event field annotation to use on fractions, typically between `0.0` and `1.0`, to specify that the value is a percentage.
  `@interface`
  `Period`
  Event annotation, specifies the default setting value for a periodic event.
  `@interface`
  `Relational`
  Meta annotation for relational annotations, to be used on an annotation.
  `class`
  `SettingControl`
  Base class to extend to create setting controls.
  `@interface`
  `StackTrace`
  Event annotation, determines whether an event by default has a stack trace or not.
  `@interface`
  `Threshold`
  Event annotation, specifies the default duration below which an event is not recorded (for example, `"20 ms"`).
  `@interface`
  `Throttle`
  Event annotation, specifies the maximum rate of events per time unit, (for example, `"100/s"`).
  `@interface`
  `Timespan`
  Event field annotation, specifies that the value is a duration.
  `@interface`
  `Timestamp`
  Event field annotation, specifies that the value is a point in time.
  `@interface`
  `TransitionFrom`
  Event field annotation, specifies that the event transitioned from a thread.
  `@interface`
  `TransitionTo`
  Event field annotation, specifies that the event will soon transition to a thread.
  `@interface`
  `Unsigned`
  Event field annotation, specifies that the value is of an unsigned data type.