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

Enum NestingKind

  • All Implemented Interfaces:
    Serializable, Comparable<NestingKind>, Constable
    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();
 }

    Since:
    1.6

    • Enum Constant Detail

      • 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.
        See The Java™ Language Specification:
        8.5 Member Type Declarations

      • LOCAL

        public static final NestingKind LOCAL
        A named type declared within a construct other than a type.
        See The Java™ Language Specification:
        14.3 Local Class Declarations

      • ANONYMOUS

        public static final NestingKind ANONYMOUS
        A type without a name.
        See The Java™ Language Specification:
        15.9.5 Anonymous Class Declarations

    • Method Detail

      • values

        public static NestingKind[] values()
        Returns an array containing the constants of this enum type, in the order they are declared.
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static NestingKind 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

      • isNested

        public boolean isNested()
        Does this constant correspond to a nested type element? A nested type element is any that is not top-level. More specifically, an inner type element is any nested type element that is not static.
        Returns:
        whether or not the constant is nested
        See The Java™ Language Specification:
        14.3 Inner Classes and Enclosing Instances