Added in API level 1

Summary: Enums | Methods | Inherited Methods

ElementType

public final enum ElementType
extends Enum<ElementType>

java.lang.Object
↳	java.lang.Enum<java.lang.annotation.ElementType>
	↳	java.lang.annotation.ElementType

The constants of this enumerated class provide a simple classification of the syntactic locations where annotations may appear in a Java program. These constants are used in Target meta-annotations to specify where it is legal to write annotations of a given type.

The syntactic locations where annotations may appear are split into declaration contexts, where annotations apply to declarations, and type contexts, where annotations apply to types used in declarations and expressions.

The constants ANNOTATION_TYPE, CONSTRUCTOR, FIELD, LOCAL_VARIABLE, METHOD, PACKAGE, MODULE, PARAMETER, TYPE, and TYPE_PARAMETER correspond to the declaration contexts in JLS 9.6.4.1.

For example, an annotation whose interface is meta-annotated with @Target(ElementType.FIELD) may only be written as a modifier for a field declaration.

The constant TYPE_USE corresponds to the type contexts in JLS 4.11, as well as to two declaration contexts: class and interface declarations (including annotation declarations) and type parameter declarations.

For example, an annotation whose interface is meta-annotated with @Target(ElementType.TYPE_USE) may be written on the class or interface of a field (or within the class or interface of the field, if it is a nested or parameterized class or interface, or array class), and may also appear as a modifier for, say, a class declaration.

The TYPE_USE constant includes class and interface declarations and type parameter declarations as a convenience for designers of type checkers which give semantics to annotation interfaces. For example, if the annotation interface NonNull is meta-annotated with @Target(ElementType.TYPE_USE), then @NonNull class C {...} could be treated by a type checker as indicating that all variables of class C are non-null, while still allowing variables of other classes to be non-null or not non-null based on whether @NonNull appears at the variable's declaration.

Summary

Enum values
`ElementType`	`ANNOTATION_TYPE` Annotation interface declaration (Formerly known as an annotation type.)
`ElementType`	`CONSTRUCTOR` Constructor declaration
`ElementType`	`FIELD` Field declaration (includes enum constants)
`ElementType`	`LOCAL_VARIABLE` Local variable declaration
`ElementType`	`METHOD` Method declaration
`ElementType`	`MODULE` Module declaration.
`ElementType`	`PACKAGE` Package declaration
`ElementType`	`PARAMETER` Formal parameter declaration
`ElementType`	`RECORD_COMPONENT` Record component
`ElementType`	`TYPE` Class, interface (including annotation interface), enum, or record declaration
`ElementType`	`TYPE_PARAMETER` Type parameter declaration
`ElementType`	`TYPE_USE` Use of a type

Public methods
`static ElementType`	`valueOf(String name)`
`static final ElementType[]`	`values()`

Inherited methods

From class


        
          java.lang.Enum

`final Object`	`clone()` Throws CloneNotSupportedException.
`final int`	`compareTo(ElementType o)` Compares this enum with the specified object for order.
`final boolean`	`equals(Object other)` Returns true if the specified object is equal to this enum constant.
`final void`	`finalize()` enum classes cannot have finalize methods.
`final Class<ElementType>`	`getDeclaringClass()` Returns the Class object corresponding to this enum constant's enum type.
`final int`	`hashCode()` Returns a hash code for this enum constant.
`final String`	`name()` Returns the name of this enum constant, exactly as declared in its enum declaration.
`final int`	`ordinal()` Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero).
`String`	`toString()` Returns the name of this enum constant, as contained in the declaration.
`static <T extends Enum<T>> T`	`valueOf(Class<T> enumClass, String name)` Returns the enum constant of the specified enum class with the specified name.

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the 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(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.
`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()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          java.lang.Comparable


      compareTo(ElementType o)

Compares this object with the specified object for order.

Enum values

ANNOTATION_TYPE

Added in API level 1

public static final ElementType ANNOTATION_TYPE

Annotation interface declaration (Formerly known as an annotation type.)

CONSTRUCTOR

Added in API level 1

public static final ElementType CONSTRUCTOR

Constructor declaration

FIELD

Added in API level 1

public static final ElementType FIELD

Field declaration (includes enum constants)

LOCAL_VARIABLE

Added in API level 1

public static final ElementType LOCAL_VARIABLE

Local variable declaration

METHOD

Added in API level 1

public static final ElementType METHOD

Method declaration

MODULE

Added in API level 31

public static final ElementType MODULE

Module declaration.

PACKAGE

Added in API level 1

public static final ElementType PACKAGE

Package declaration

PARAMETER

Added in API level 1

public static final ElementType PARAMETER

Formal parameter declaration

RECORD_COMPONENT

Added in API level 34

public static final ElementType RECORD_COMPONENT

Record component

TYPE

Added in API level 1

public static final ElementType TYPE

Class, interface (including annotation interface), enum, or record declaration

TYPE_PARAMETER

Added in API level 26

public static final ElementType TYPE_PARAMETER

Type parameter declaration

TYPE_USE

Added in API level 26

public static final ElementType TYPE_USE

Use of a type

Public methods

valueOf

public static ElementType valueOf (String name)

Parameters
`name`	`String`

Returns
`ElementType`

values

public static final ElementType[] values ()

Returns
`ElementType[]`