TypeAnnotation.TypeParameterTarget (Java SE 23 & JDK 23)
Description: declaration: module: java.base, package: java.lang.classfile, interface: TypeAnnotation, interface: TypeParameterTarget
Keywords: java.lang.classfile.TypeAnnotation.TypeParameterTarget interface

# Interface TypeAnnotation.TypeParameterTarget

All Superinterfaces:
  `TypeAnnotation.TargetInfoPREVIEW`

Enclosing interface:
  `TypeAnnotationPREVIEW`

public static sealed interface TypeAnnotation.TypeParameterTarget extends TypeAnnotation.TargetInfoPREVIEW
`TypeParameterTarget` is a preview API of the Java platform.
Programs can only use `TypeParameterTarget` when preview features are enabled.
Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.
Indicates that an annotation appears on the declaration of the i'th type parameter of a generic class, generic interface, generic method, or generic constructor.

Since:
  22

- ## Method Summary

  Modifier and Type
  Method
  Description
  `int`
  `typeParameterIndex()`
  JVMS: The value of the type_parameter_index item specifies which type parameter declaration is annotated.

  ### Methods declared in interface java.lang.classfile.TypeAnnotation.TargetInfoPREVIEW

  `size, targetType`

- ## Method Details

  - ### typeParameterIndex

    int typeParameterIndex()
    JVMS: The value of the type_parameter_index item specifies which type parameter declaration is annotated. A type_parameter_index value of 0 specifies the first type parameter declaration.
    Returns:
      the index into the type parameters