Docs4dev
Docs
openjdk / 17 / java.base / java / lang / constant / directmethodhandledesc.kind.html

Enum Class DirectMethodHandleDesc.Kind

java.lang.Object
java.lang.Enum<DirectMethodHandleDesc.Kind>
java.lang.constant.DirectMethodHandleDesc.Kind
All Implemented Interfaces:
Serializable, Comparable<DirectMethodHandleDesc.Kind>, Constable
Enclosing interface:
DirectMethodHandleDesc 
public static enum DirectMethodHandleDesc.Kind extends Enum<DirectMethodHandleDesc.Kind>
Kinds of method handles that can be described with DirectMethodHandleDesc.
Since:
12

Nested Class Summary

Nested classes/interfaces declared in class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constant Description
CONSTRUCTOR
A method handle for a constructor
GETTER
A method handle for a read accessor for an instance field
INTERFACE_SPECIAL
A method handle for an interface method invoked as with invokespecial
INTERFACE_STATIC
A method handle for a method invoked as with invokestatic
INTERFACE_VIRTUAL
A method handle for a method invoked as with invokeinterface
SETTER
A method handle for a write accessor for an instance field
SPECIAL
A method handle for a method invoked as with invokespecial
STATIC
A method handle for a method invoked as with invokestatic
STATIC_GETTER
A method handle for a read accessor for a static field
STATIC_SETTER
A method handle for a write accessor for a static field
VIRTUAL
A method handle for a method invoked as with invokevirtual

Field Summary

Modifier and Type Field Description
final boolean isInterface
Is this an interface
final int refKind
The corresponding refKind value for this kind of method handle, as defined by MethodHandleInfo

Method Summary

Modifier and Type Method Description
static DirectMethodHandleDesc.Kind valueOf(int refKind)
Returns the enumeration member with the given refKind field.
static DirectMethodHandleDesc.Kind valueOf(int refKind, boolean isInterface)
Returns the enumeration member with the given the refKind and isInterface arguments.
static DirectMethodHandleDesc.Kind valueOf(String name)
Returns the enum constant of this class with the specified name.
static DirectMethodHandleDesc.Kind[] values()
Returns an array containing the constants of this enum class, in the order they are declared.

Methods declared in class java.lang.Enum

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

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

STATIC

public static final DirectMethodHandleDesc.Kind STATIC
A method handle for a method invoked as with invokestatic

INTERFACE_STATIC

public static final DirectMethodHandleDesc.Kind INTERFACE_STATIC
A method handle for a method invoked as with invokestatic

VIRTUAL

public static final DirectMethodHandleDesc.Kind VIRTUAL
A method handle for a method invoked as with invokevirtual

INTERFACE_VIRTUAL

public static final DirectMethodHandleDesc.Kind INTERFACE_VIRTUAL
A method handle for a method invoked as with invokeinterface

SPECIAL

public static final DirectMethodHandleDesc.Kind SPECIAL
A method handle for a method invoked as with invokespecial

INTERFACE_SPECIAL

public static final DirectMethodHandleDesc.Kind INTERFACE_SPECIAL
A method handle for an interface method invoked as with invokespecial

CONSTRUCTOR

public static final DirectMethodHandleDesc.Kind CONSTRUCTOR
A method handle for a constructor

GETTER

public static final DirectMethodHandleDesc.Kind GETTER
A method handle for a read accessor for an instance field

SETTER

public static final DirectMethodHandleDesc.Kind SETTER
A method handle for a write accessor for an instance field

STATIC_GETTER

public static final DirectMethodHandleDesc.Kind STATIC_GETTER
A method handle for a read accessor for a static field

STATIC_SETTER

public static final DirectMethodHandleDesc.Kind STATIC_SETTER
A method handle for a write accessor for a static field

Field Details

refKind

public final int refKind
The corresponding refKind value for this kind of method handle, as defined by MethodHandleInfo

isInterface

public final boolean isInterface
Is this an interface

Method Details

values

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

valueOf

public static DirectMethodHandleDesc.Kind valueOf(String name)
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name
NullPointerException - if the argument is null

valueOf

public static DirectMethodHandleDesc.Kind valueOf(int refKind)
Returns the enumeration member with the given refKind field. Behaves as if valueOf(refKind, false). As a special case, if refKind is REF_invokeInterface (9) then the isInterface field will be true.
Parameters:
refKind - refKind of desired member
Returns:
the matching enumeration member
Throws:
IllegalArgumentException - if there is no such member

valueOf

public static DirectMethodHandleDesc.Kind valueOf(int refKind, boolean isInterface)
Returns the enumeration member with the given the refKind and isInterface arguments. For most values of refKind there is an exact match regardless of the value of isInterface. These are:
  • REF_invokeVirtual which matches to VIRTUAL
  • REF_invokeInterface which matches to INTERFACE_VIRTUAL
  • REF_newInvokeSpecial which matches to CONSTRUCTOR
  • REF_getField which matches to GETTER
  • REF_putField which matches to SETTER
  • REF_getStatic which matches to STATIC_GETTER
  • REF_putStatic which matches to STATIC_SETTER
As for the rest, the returned kind will depend on the value (false or true accordingly) of isInterface:
  • REF_invokeStatic which matches to STATIC or INTERFACE_STATIC
  • REF_invokeSpecial which matches to SPECIAL or INTERFACE_SPECIAL
Parameters:
refKind - refKind of desired member
isInterface - whether desired member is for interface methods
Returns:
the matching enumeration member
Throws:
IllegalArgumentException - if there is no such member

© 1993, 2021, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/constant/DirectMethodHandleDesc.Kind.html