ExecutableElement (Java SE 11 & JDK 11 )
Keywords: javax.lang.model.element.ExecutableElement interface

Module java.compiler
Package javax.lang.model.element

## Interface ExecutableElement

- All Superinterfaces:
    `AnnotatedConstruct`, `Element`, `Parameterizable`

      public interface ExecutableElement
      extends Element, Parameterizable

  Represents a method, constructor, or initializer (static or instance) of a class or interface, including annotation type elements.
  Since:
    1.6
  See Also:
    `ExecutableType`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `AnnotationValue` | `getDefaultValue()` | Returns the default value if this executable is an annotation type element.
    `List<? extends VariableElement>` | `getParameters()` | Returns the formal parameters of this executable.
    `TypeMirror` | `getReceiverType()` | Returns the receiver type of this executable, or `NoType` with kind `NONE` if the executable has no receiver type.
    `TypeMirror` | `getReturnType()` | Returns the return type of this executable.
    `Name` | `getSimpleName()` | Returns the simple name of a constructor, method, or initializer.
    `List<? extends TypeMirror>` | `getThrownTypes()` | Returns the exceptions and other throwables listed in this method or constructor's `throws` clause in declaration order.
    `List<? extends TypeParameterElement>` | `getTypeParameters()` | Returns the formal type parameters of this executable in declaration order.
    `boolean` | `isDefault()` | Returns `true` if this method is a default method and returns `false` otherwise.
    `boolean` | `isVarArgs()` | Returns `true` if this method or constructor accepts a variable number of arguments and returns `false` otherwise.

    - ### Methods declared in interface javax.lang.model.AnnotatedConstruct

      `getAnnotationsByType`

    - ### Methods declared in interface javax.lang.model.element.Element

      `accept, asType, equals, getAnnotation, getAnnotationMirrors, getEnclosedElements, getEnclosingElement, getKind, getModifiers, hashCode`

- - ### Method Detail

    - #### getTypeParameters

          List<? extends TypeParameterElement> getTypeParameters()

      Returns the formal type parameters of this executable in declaration order.
      Specified by:
        `getTypeParameters` in interface `Parameterizable`
      Returns:
        the formal type parameters, or an empty list if there are none

    - #### getReturnType

          TypeMirror getReturnType()

      Returns the return type of this executable. Returns a `NoType` with kind `VOID` if this executable is not a method, or is a method that does not return a value.
      Returns:
        the return type of this executable

    - #### getParameters

          List<? extends VariableElement> getParameters()

      Returns the formal parameters of this executable. They are returned in declaration order.
      Returns:
        the formal parameters, or an empty list if there are none

    - #### getReceiverType

          TypeMirror getReceiverType()

      Returns the receiver type of this executable, or `NoType` with kind `NONE` if the executable has no receiver type. An executable which is an instance method, or a constructor of an inner class, has a receiver type derived from the declaring type. An executable which is a static method, or a constructor of a non-inner class, or an initializer (static or instance), has no receiver type.
      Returns:
        the receiver type of this executable
      Since:
        1.8

    - #### isVarArgs

          boolean isVarArgs()

      Returns `true` if this method or constructor accepts a variable number of arguments and returns `false` otherwise.
      Returns:
        `true` if this method or constructor accepts a variable number of arguments and `false` otherwise

    - #### isDefault

          boolean isDefault()

      Returns `true` if this method is a default method and returns `false` otherwise.
      Returns:
        `true` if this method is a default method and `false` otherwise
      Since:
        1.8

    - #### getThrownTypes

          List<? extends TypeMirror> getThrownTypes()

      Returns the exceptions and other throwables listed in this method or constructor's `throws` clause in declaration order.
      Returns:
        the exceptions and other throwables listed in the `throws` clause, or an empty list if there are none

    - #### getDefaultValue

          AnnotationValue getDefaultValue()

      Returns the default value if this executable is an annotation type element. Returns `null` if this method is not an annotation type element, or if it is an annotation type element with no default value.
      Returns:
        the default value, or `null` if none

    - #### getSimpleName

          Name getSimpleName()

      Returns the simple name of a constructor, method, or initializer. For a constructor, the name `"<init>"` is returned, for a static initializer, the name `"<clinit>"` is returned, and for an anonymous class or instance initializer, an empty name is returned.
      Specified by:
        `getSimpleName` in interface `Element`
      Returns:
        the simple name of a constructor, method, or initializer
      See Also:
        `PackageElement.getSimpleName()`, `getSimpleName()`, `TypeElement.getSimpleName()`, `VariableElement.getSimpleName()`, `ModuleElement.getSimpleName()`