1. Description
2. Field Summary
3. Method Summary
   1. Methods declared in class AccessibleObject
   2. Methods declared in class Object
4. Method Details
   1. getDeclaringClass()
   2. getName()
   3. getModifiers()
   4. accessFlags()
   5. getTypeParameters()
   6. getParameterTypes()
   7. getParameterCount()
   8. getGenericParameterTypes()
   9. getParameters()
   10. getExceptionTypes()
   11. getGenericExceptionTypes()
   12. toGenericString()
   13. isVarArgs()
   14. isSynthetic()
   15. getParameterAnnotations()
   16. getAnnotation(Class)
   17. getAnnotationsByType(Class)
   18. getAnnotatedReturnType()
   19. getAnnotatedReceiverType()
   20. getAnnotatedParameterTypes()
   21. getAnnotatedExceptionTypes()

• Field Summary

  Fields declared in interface Member

  DECLARED, PUBLIC

  Modifier and Type

  Field

  Description

  static final int

  DECLARED

  Identifies the set of declared members of a class or interface.

  static final int

  PUBLIC

  Identifies the set of all public members of a class or interface, including inherited members.

• Method Summary

  All MethodsInstance MethodsAbstract MethodsConcrete Methods

  Modifier and Type

  Method

  Description

  Set<AccessFlag>

  accessFlags()

  Returns an unmodifiable set of the access flags for the executable represented by this object, possibly empty.

  AnnotatedType[]

  getAnnotatedExceptionTypes()

  Returns an array of AnnotatedType objects that represent the use of types to specify the declared exceptions of the method/constructor represented by this Executable.

  AnnotatedType[]

  getAnnotatedParameterTypes()

  Returns an array of AnnotatedType objects that represent the use of types to specify formal parameter types of the method/constructor represented by this Executable.

  AnnotatedType

  getAnnotatedReceiverType()

  Returns an AnnotatedType object that represents the use of a type to specify the receiver type of the method/constructor represented by this Executable object.

  abstract AnnotatedType

  getAnnotatedReturnType()

  Returns an AnnotatedType object that represents the use of a type to specify the return type of the method/constructor represented by this Executable.

  <T extends Annotation>
  T

  getAnnotation(Class<T> annotationClass)

  Returns this element's annotation for the specified type if such an annotation is present, else null.

  <T extends Annotation>
  T[]

  getAnnotationsByType(Class<T> annotationClass)

  Returns annotations that are associated with this element.

  abstract Class<?>

  getDeclaringClass()

  Returns the Class object representing the class or interface that declares the executable represented by this object.

  abstract Class<?>[]

  getExceptionTypes()

  Returns an array of Class objects that represent the types of exceptions declared to be thrown by the underlying executable represented by this object.

  Type[]

  getGenericExceptionTypes()

  Returns an array of Type objects that represent the exceptions declared to be thrown by this executable object.

  Type[]

  getGenericParameterTypes()

  Returns an array of Type objects that represent the formal parameter types, in declaration order, of the executable represented by this object.

  abstract int

  getModifiers()

  Returns the Java language modifiers for the executable represented by this object.

  abstract String

  getName()

  Returns the name of the executable represented by this object.

  abstract Annotation[][]

  getParameterAnnotations()

  Returns an array of arrays of Annotations that represent the annotations on the formal parameters, in declaration order, of the Executable represented by this object.

  abstract int

  getParameterCount()

  Returns the number of formal parameters (whether explicitly declared or implicitly declared or neither) for the executable represented by this object.

  Parameter[]

  getParameters()

  Returns an array of Parameter objects representing all the parameters to the underlying executable represented by this object.

  abstract Class<?>[]

  getParameterTypes()

  Returns an array of Class objects that represent the formal parameter types, in declaration order, of the executable represented by this object.

  abstract TypeVariable<?>[]

  getTypeParameters()

  Returns an array of TypeVariable objects that represent the type variables declared by the generic declaration represented by this GenericDeclaration object, in declaration order.

  boolean

  isSynthetic()

  Returns true if this executable is a synthetic construct; returns false otherwise.

  boolean

  isVarArgs()

  Returns true if this executable was declared to take a variable number of arguments; returns false otherwise.

  abstract String

  toGenericString()

  Returns a string describing this Executable, including any type parameters.

  Methods declared in class AccessibleObject

  canAccess, getAnnotations, getDeclaredAnnotation, getDeclaredAnnotations, getDeclaredAnnotationsByType, isAccessible, isAnnotationPresent, setAccessible, setAccessible, trySetAccessible

  Modifier and Type

  Method

  Description

  final boolean

  canAccess(Object obj)

  Test if the caller can access this reflected object.

  Annotation[]

  getAnnotations()

  Returns annotations that are present on this element.

  <T extends Annotation>
  T

  getDeclaredAnnotation(Class<T> annotationClass)

  Returns this element's annotation for the specified type if such an annotation is directly present, else null.

  Annotation[]

  getDeclaredAnnotations()

  Returns annotations that are directly present on this element.

  <T extends Annotation>
  T[]

  getDeclaredAnnotationsByType(Class<T> annotationClass)

  Returns this element's annotation(s) for the specified type if such annotations are either directly present or indirectly present.

  boolean

  isAccessible()

  Deprecated.

  This method is deprecated because its name hints that it checks if the reflected object is accessible when it actually indicates if the checks for Java language access control are suppressed.

  boolean

  isAnnotationPresent(Class<? extends Annotation> annotationClass)

  Returns true if an annotation for the specified type is present on this element, else false.

  void

  setAccessible(boolean flag)

  Set the accessible flag for this reflected object to the indicated boolean value.

  static void

  setAccessible(AccessibleObject[] array, boolean flag)

  Convenience method to set the accessible flag for an array of reflected objects.

  final boolean

  trySetAccessible()

  Set the accessible flag for this reflected object to true if possible.

  Methods declared in class Object

  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  Modifier and Type

  Method

  Description

  protected Object

  clone()

  Creates and returns a copy of this object.

  boolean

  equals(Object obj)

  Indicates whether some other object is "equal to" this one.

  protected void

  finalize()

  Deprecated, for removal: This API element is subject to removal in a future version.

  Finalization is deprecated and subject to removal in a future release.

  final Class<?>

  getClass()

  Returns the runtime class of this Object.

  int

  hashCode()

  Returns a hash code value for this object.

  final void

  notify()

  Wakes up a single thread that is waiting on this object's monitor.

  final void

  notifyAll()

  Wakes up all threads that are waiting on this object's monitor.

  String

  toString()

  Returns a string representation of the object.

  final void

  wait()

  Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

  final void

  wait(long timeoutMillis)

  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  final void

  wait(long timeoutMillis, int nanos)

  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

• Method Details

  • getDeclaringClass

    public abstract Class<?> getDeclaringClass()

    Returns the Class object representing the class or interface that declares the executable represented by this object.

    Specified by: getDeclaringClass in interface Member Returns: an object representing the declaring class of the underlying member

  • getName

    public abstract String getName()

    Returns the name of the executable represented by this object.

    Specified by: getName in interface Member Returns: the simple name of the underlying member

  • getModifiers

    public abstract int getModifiers()

    Returns the Java language modifiers for the executable represented by this object.

    Specified by: getModifiers in interface Member Returns: the Java language modifiers for the executable represented by this object See Also:

    • accessFlags()

  • accessFlags

    public Set<AccessFlag> accessFlags()

    Returns an unmodifiable set of the access flags for the executable represented by this object, possibly empty.

    Specified by: accessFlags in interface Member Returns: an unmodifiable set of the access flags for the executable represented by this object, possibly empty See Java Virtual Machine Specification: 4.6 Methods
    Since: 20 See Also:

    • getModifiers()

  • getTypeParameters

    public abstract TypeVariable<?>[] getTypeParameters()

    Returns an array of TypeVariable objects that represent the type variables declared by the generic declaration represented by this GenericDeclaration object, in declaration order. Returns an array of length 0 if the underlying generic declaration declares no type variables.

    Specified by: getTypeParameters in interface GenericDeclaration Returns: an array of TypeVariable objects that represent the type variables declared by this generic declaration Throws: GenericSignatureFormatError - if the generic signature of this generic declaration does not conform to the format specified in The Java Virtual Machine Specification

  • getParameterTypes

    public abstract Class<?>[] getParameterTypes()

    Returns an array of Class objects that represent the formal parameter types, in declaration order, of the executable represented by this object. Returns an array of length 0 if the underlying executable takes no parameters. Note that the constructors of some inner classes may have an implicitly declared parameter in addition to explicitly declared ones. Also note that compact constructors of a record class may have implicitly declared parameters.

    Returns: the parameter types for the executable this object represents

  • getParameterCount

    public abstract int getParameterCount()

    Returns the number of formal parameters (whether explicitly declared or implicitly declared or neither) for the executable represented by this object.

    Returns: The number of formal parameters for the executable this object represents

  • getGenericParameterTypes

    public Type[] getGenericParameterTypes()

    Returns an array of Type objects that represent the formal parameter types, in declaration order, of the executable represented by this object. An array of length 0 is returned if the underlying executable takes no parameters. Note that the constructors of some inner classes may have an implicitly declared parameter in addition to explicitly declared ones. Compact constructors of a record class may also have implicitly declared parameters, but they are a special case and thus considered as if they had been explicitly declared in the source. Finally note that as a modeling artifact, the number of returned parameters can differ depending on whether or not generic information is present. If generic information is present, parameters explicitly present in the source or parameters of compact constructors of a record class will be returned. Note that parameters of compact constructors of a record class are a special case, as they are not explicitly present in the source, and its type will be returned regardless of the parameters being implicitly declared or not. If generic information is not present, implicit and synthetic parameters may be returned as well.

    If a formal parameter type is a parameterized type, the Type object returned for it must accurately reflect the actual type arguments used in the source code. This assertion also applies to the parameters of compact constructors of a record class, independently of them being implicitly declared or not.

    If a formal parameter type is a type variable or a parameterized type, it is created. Otherwise, it is resolved.

    Returns: an array of Types that represent the formal parameter types of the underlying executable, in declaration order Throws: GenericSignatureFormatError - if the generic method signature does not conform to the format specified in The Java Virtual Machine Specification TypeNotPresentException - if any of the parameter types of the underlying executable refers to a non-existent type declaration MalformedParameterizedTypeException - if any of the underlying executable's parameter types refer to a parameterized type that cannot be instantiated for any reason

  • getParameters

    public Parameter[] getParameters()

    Returns an array of Parameter objects representing all the parameters to the underlying executable represented by this object. An array of length 0 is returned if the executable has no parameters.

    The parameters of the underlying executable do not necessarily have unique names, or names that are legal identifiers in the Java programming language (JLS 3.8).

    Returns: an array of Parameter objects representing all the parameters to the underlying executable represented by this object Throws: MalformedParametersException - if the class file contains a MethodParameters attribute that is improperly formatted.

  • getExceptionTypes

    public abstract Class<?>[] getExceptionTypes()

    Returns an array of Class objects that represent the types of exceptions declared to be thrown by the underlying executable represented by this object. Returns an array of length 0 if the executable declares no exceptions in its throws clause.

    Returns: the exception types declared as being thrown by the executable this object represents

  • getGenericExceptionTypes

    public Type[] getGenericExceptionTypes()

    Returns an array of Type objects that represent the exceptions declared to be thrown by this executable object. Returns an array of length 0 if the underlying executable declares no exceptions in its throws clause.

    If an exception type is a type variable or a parameterized type, it is created. Otherwise, it is resolved.

    Returns: an array of Types that represent the exception types thrown by the underlying executable Throws: GenericSignatureFormatError - if the generic method signature does not conform to the format specified in The Java Virtual Machine Specification TypeNotPresentException - if the underlying executable's throws clause refers to a non-existent type declaration MalformedParameterizedTypeException - if the underlying executable's throws clause refers to a parameterized type that cannot be instantiated for any reason

  • toGenericString

    public abstract String toGenericString()

    Returns a string describing this Executable, including any type parameters.

    Returns: a string describing this Executable, including any type parameters

  • isVarArgs

    public boolean isVarArgs()

    Returns true if this executable was declared to take a variable number of arguments; returns false otherwise.

    Returns: true if this executable was declared to take a variable number of arguments; returns false otherwise

  • isSynthetic

    public boolean isSynthetic()

    Returns true if this executable is a synthetic construct; returns false otherwise.

    Specified by: isSynthetic in interface Member Returns: true if and only if this executable is a synthetic construct as defined by The Java Language Specification. See Java Language Specification: 13.1 The Form of a Binary
    See Java Virtual Machine Specification: 4.6 Methods
    

  • getParameterAnnotations

    public abstract Annotation[][] getParameterAnnotations()

    Returns an array of arrays of Annotations that represent the annotations on the formal parameters, in declaration order, of the Executable represented by this object. Synthetic and mandated parameters (see explanation below), such as the outer "this" parameter to an inner class constructor will be represented in the returned array. If the executable has no parameters (meaning no formal, no synthetic, and no mandated parameters), a zero-length array will be returned. If the Executable has one or more parameters, a nested array of length zero is returned for each parameter with no annotations. The annotation objects contained in the returned arrays are serializable. The caller of this method is free to modify the returned arrays; it will have no effect on the arrays returned to other callers. A compiler may add extra parameters that are implicitly declared in source ("mandated"), as well as parameters that are neither implicitly nor explicitly declared in source ("synthetic") to the parameter list for a method. See Parameter for more information.

    Note that any annotations returned by this method are declaration annotations.

    Returns: an array of arrays that represent the annotations on the formal and implicit parameters, in declaration order, of the executable represented by this object See Also:

    • Parameter
    • Parameter.getAnnotations()

  • getAnnotation

    public <T extends Annotation> T getAnnotation(Class<T> annotationClass)

    Returns this element's annotation for the specified type if such an annotation is present, else null.

    Note that any annotation returned by this method is a declaration annotation.

    Specified by: getAnnotation in interface AnnotatedElement Overrides: getAnnotation in class AccessibleObject Type Parameters: T - the type of the annotation to query for and return if present Parameters: annotationClass - the Class object corresponding to the annotation type Returns: this element's annotation for the specified annotation type if present on this element, else null Throws: NullPointerException - if the given annotation class is null

  • getAnnotationsByType

    public <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass)

    Returns annotations that are associated with this element. If there are no annotations associated with this element, the return value is an array of length 0. The difference between this method and AnnotatedElement.getAnnotation(Class) is that this method detects if its argument is a repeatable annotation type (JLS 9.6), and if so, attempts to find one or more annotations of that type by "looking through" a container annotation. The caller of this method is free to modify the returned array; it will have no effect on the arrays returned to other callers.

    Note that any annotations returned by this method are declaration annotations.

    Specified by: getAnnotationsByType in interface AnnotatedElement Overrides: getAnnotationsByType in class AccessibleObject Type Parameters: T - the type of the annotation to query for and return if present Parameters: annotationClass - the Class object corresponding to the annotation type Returns: all this element's annotations for the specified annotation type if associated with this element, else an array of length zero Throws: NullPointerException - if the given annotation class is null

  • getAnnotatedReturnType

    public abstract AnnotatedType getAnnotatedReturnType()

    Returns an AnnotatedType object that represents the use of a type to specify the return type of the method/constructor represented by this Executable. If this Executable object represents a constructor, the AnnotatedType object represents the type of the constructed object. If this Executable object represents a method, the AnnotatedType object represents the use of a type to specify the return type of the method.

    Returns: an object representing the return type of the method or constructor represented by this Executable

  • getAnnotatedReceiverType

    public AnnotatedType getAnnotatedReceiverType()

    Returns an AnnotatedType object that represents the use of a type to specify the receiver type of the method/constructor represented by this Executable object. The receiver type of a method/constructor is available only if the method/constructor has a receiver parameter (JLS 8.4.1). If this Executable object represents an instance method or represents a constructor of an inner member class, and the method/constructor either has no receiver parameter or has a receiver parameter with no annotations on its type, then the return value is an AnnotatedType object representing an element with no annotations. If this Executable object represents a static method or represents a constructor of a top level, static member, local, or anonymous class, then the return value is null.

    Returns: an object representing the receiver type of the method or constructor represented by this Executable or null if this Executable can not have a receiver parameter See Java Language Specification: 8.4 Method Declarations
    8.4.1 Formal Parameters
    8.8 Constructor Declarations
    

  • getAnnotatedParameterTypes

    public AnnotatedType[] getAnnotatedParameterTypes()

    Returns an array of AnnotatedType objects that represent the use of types to specify formal parameter types of the method/constructor represented by this Executable. The order of the objects in the array corresponds to the order of the formal parameter types in the declaration of the method/constructor. Returns an array of length 0 if the method/constructor declares no parameters. Note that the constructors of some inner classes may have an implicitly declared parameter in addition to explicitly declared ones. Also note that compact constructors of a record class may have implicitly declared parameters.

    Returns: an array of objects representing the types of the formal parameters of the method or constructor represented by this Executable

  • getAnnotatedExceptionTypes

    public AnnotatedType[] getAnnotatedExceptionTypes()

    Returns an array of AnnotatedType objects that represent the use of types to specify the declared exceptions of the method/constructor represented by this Executable. The order of the objects in the array corresponds to the order of the exception types in the declaration of the method/constructor. Returns an array of length 0 if the method/constructor declares no exceptions.

    Returns: an array of objects representing the declared exceptions of the method or constructor represented by this Executable

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