站内搜索: 请输入搜索关键词
当前页面: 在线文档首页 > JDK 5 Documentation v6.0, Java 2 SDK 英文文档

ElementType (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档


Java™ Platform
Standard Ed. 6

java.lang.annotation
Enum ElementType

java.lang.Object
  extended by java.lang.Enum<ElementType>
      extended by java.lang.annotation.ElementType
All Implemented Interfaces:
Serializable, Comparable<ElementType>

public enum ElementType
extends Enum<ElementType>

A program element type. The constants of this enumerated type provide a simple classification of the declared elements in a Java program.

These constants are used with the Target meta-annotation type to specify where it is legal to use an annotation type.

Since:
1.5

Enum Constant Summary
ANNOTATION_TYPE
          Annotation type declaration
CONSTRUCTOR
          Constructor declaration
FIELD
          Field declaration (includes enum constants)
LOCAL_VARIABLE
          Local variable declaration
METHOD
          Method declaration
PACKAGE
          Package declaration
PARAMETER
          Parameter declaration
TYPE
          Class, interface (including annotation type), or enum declaration
 
Method Summary
static ElementType valueOf(String name)
          Returns the enum constant of this type with the specified name.
static ElementType[] values()
          Returns an array containing the constants of this enum type, in the order they are declared.
 
Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Enum Constant Detail

TYPE

public static final ElementType TYPE
Class, interface (including annotation type), or enum declaration


FIELD

public static final ElementType FIELD
Field declaration (includes enum constants)


METHOD

public static final ElementType METHOD
Method declaration


PARAMETER

public static final ElementType PARAMETER
Parameter declaration


CONSTRUCTOR

public static final ElementType CONSTRUCTOR
Constructor declaration


LOCAL_VARIABLE

public static final ElementType LOCAL_VARIABLE
Local variable declaration


ANNOTATION_TYPE

public static final ElementType ANNOTATION_TYPE
Annotation type declaration


PACKAGE

public static final ElementType PACKAGE
Package declaration

Method Detail

values

public static ElementType[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
for (ElementType c : ElementType.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static ElementType valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:
name - the name of the enum constant to be returned.
Returns:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
NullPointerException - if the argument is null

Java™ Platform
Standard Ed. 6

Submit a bug or feature
For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.