程序包 javax.lang.model.element

枚举 NestingKind

java.lang.Object

java.lang.Enum<NestingKind>

javax.lang.model.element.NestingKind

所有已实现的接口:

Serializable, Comparable<NestingKind>

public enum NestingKind
extends Enum<NestingKind>

The nesting kind of a type element. Type elements come in four varieties: top-level, member, local, and anonymous. Nesting kind is a non-standard term used here to denote this classification.

Note that it is possible additional nesting kinds will be added in future versions of the platform.

Example: The classes below are annotated with their nesting kind.

 import java.lang.annotation.*;
 import static java.lang.annotation.RetentionPolicy.*;
 import javax.lang.model.element.*;
 import static javax.lang.model.element.NestingKind.*;

 @Nesting(TOP_LEVEL)
 public class NestingExamples {
     @Nesting(MEMBER)
     static class MemberClass1{}

     @Nesting(MEMBER)
     class MemberClass2{}

     public static void main(String... argv) {
         @Nesting(LOCAL)
         class LocalClass{};

         Class<?>[] classes = {
             NestingExamples.class,
             MemberClass1.class,
             MemberClass2.class,
             LocalClass.class
         };

         for(Class<?> clazz : classes) {
             System.out.format("%s is %s%n",
                               clazz.getName(),
                               clazz.getAnnotation(Nesting.class).value());
         }
     }
 }

 @Retention(RUNTIME)
 @interface Nesting {
     NestingKind value();
 }
 

从以下版本开始:

1.6

枚举常量概要

枚举常量

枚举常量	说明
ANONYMOUS	A type without a name.
LOCAL	A named type declared within a construct other than a type.
MEMBER	A type that is a named member of another type.
TOP_LEVEL	A top-level type, not contained within another type.

方法概要

限定符和类型	方法	说明
boolean	isNested()	Does this constant correspond to a nested type element? A nested type element is any that is not top-level.
static NestingKind	valueOf(String name)	返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)
static NestingKind[]	values()	按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示: for (NestingKind c : NestingKind.values()) System.out.println(c);

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

TOP_LEVEL

public static final NestingKind TOP_LEVEL

A top-level type, not contained within another type.

MEMBER

public static final NestingKind MEMBER

A type that is a named member of another type.

LOCAL

public static final NestingKind LOCAL

A named type declared within a construct other than a type.

ANONYMOUS

public static final NestingKind ANONYMOUS

A type without a name.

方法详细资料

values

public static NestingKind[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (NestingKind c : NestingKind.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static NestingKind valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

isNested

public boolean isNested()

Does this constant correspond to a nested type element? A nested type element is any that is not top-level. An inner type element is any nested type element that is not static.

返回:

whether or not the constant is nested