Preview API

Show preview API for:

• 401: Value Classes and Objects (Preview)
• 470: PEM Encodings of Cryptographic Objects (Preview)
• 502: Stable Values (Preview)
• 505: Structured Concurrency (Fifth Preview)
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Contents

• Interfaces
• Classes
• Enum Classes
• Exception Classes
• Record Classes
• Fields
• Methods
• Enum Constants

Interface	Preview Feature	Description
java.lang.classfile.attribute.LoadableDescriptorsAttributePREVIEW	Value Classes and Objects	Models the LoadableDescriptorsPREVIEW attribute (JVMS 4.7.32), which suggests the JVM may load mentioned types before the class file carrying this attribute is loaded.
java.lang.StableValuePREVIEW	Stable Values	A stable value is a holder of contents that can be set at most once.
java.security.DEREncodablePREVIEW	PEM Encodings of Cryptographic Objects	This interface is implemented by security API classes that contain binary-encodable key or certificate material.
java.util.concurrent.StructuredTaskScopePREVIEW	Structured Concurrency	An API for structured concurrency.
java.util.concurrent.StructuredTaskScope.ConfigurationPREVIEW	Structured Concurrency	Represents the configuration for a StructuredTaskScope.
java.util.concurrent.StructuredTaskScope.JoinerPREVIEW	Structured Concurrency	An object used with a StructuredTaskScopePREVIEW to handle subtask completion and produce the result for the scope owner waiting in the joinPREVIEW method for subtasks to complete.
java.util.concurrent.StructuredTaskScope.SubtaskPREVIEW	Structured Concurrency	Represents a subtask forked with StructuredTaskScope.fork(Callable)PREVIEW or StructuredTaskScope.fork(Runnable)PREVIEW.

Class	Preview Feature	Description
java.security.PEMDecoderPREVIEW	PEM Encodings of Cryptographic Objects	PEMDecoder implements a decoder for Privacy-Enhanced Mail (PEM) data.
java.security.PEMEncoderPREVIEW	PEM Encodings of Cryptographic Objects	PEMEncoder implements an encoder for Privacy-Enhanced Mail (PEM) data.

Enum Class	Preview Feature	Description
java.util.concurrent.StructuredTaskScope.Subtask.StatePREVIEW	Structured Concurrency	Represents the state of a subtask.

Exception Class	Preview Feature	Description
java.lang.IdentityExceptionPREVIEW	Value Classes and Objects	Thrown when an identity object is required but a value object is supplied.
java.util.concurrent.StructuredTaskScope.FailedExceptionPREVIEW	Structured Concurrency	Exception thrown by StructuredTaskScope.join()PREVIEW when the outcome is an exception rather than a result.
java.util.concurrent.StructuredTaskScope.TimeoutExceptionPREVIEW	Structured Concurrency	Exception thrown by StructuredTaskScope.join()PREVIEW if the scope was created with a timeout and the timeout expired before or while waiting in join.
java.util.concurrent.StructureViolationExceptionPREVIEW	Structured Concurrency	Thrown when a structure violation is detected.

Record Class	Preview Feature	Description
java.security.PEMRecordPREVIEW	PEM Encodings of Cryptographic Objects	PEMRecord is a DEREncodablePREVIEW that represents Privacy-Enhanced Mail (PEM) data by its type and Base64 form.

Field	Preview Feature	Description
java.lang.reflect.Modifier.IDENTITYPREVIEW	Value Classes and Objects	The int value representing the ACC_IDENTITY modifier.

Method	Preview Feature	Description
java.lang.Class.isIdentity()PREVIEW	Value Classes and Objects	Returns true if this Class object represents an identity class, otherwise false.
java.lang.Class.isValue()PREVIEW	Value Classes and Objects	Returns true if this Class object represents a value class, otherwise false.
java.lang.classfile.Attributes.loadableDescriptors()PREVIEW	Value Classes and Objects	Returns Attribute mapper for the LoadableDescriptors attribute.
java.lang.reflect.Modifier.isIdentity(int)PREVIEW	Value Classes and Objects	Return true if the integer argument includes the identity modifier, false otherwise.
java.util.Objects.hasIdentity(Object)PREVIEW	Value Classes and Objects	Returns true if the object is a non-null reference to an identity objectPREVIEW, otherwise false.
java.util.Objects.isValueObject(Object)PREVIEW	Value Classes and Objects	Returns true if the object is a non-null reference to a value objectPREVIEW, otherwise false.
java.util.Objects.requireIdentity(T)PREVIEW	Value Classes and Objects	Checks that the specified object reference is an identity object.
java.util.Objects.requireIdentity(T, String)PREVIEW	Value Classes and Objects	Checks that the specified object reference is an identity object.
java.util.Objects.requireIdentity(T, Supplier<String>)PREVIEW	Value Classes and Objects	Checks that the specified object reference is an identity object.
javax.crypto.EncryptedPrivateKeyInfo.encryptKey(PrivateKey, char[])PREVIEW	PEM Encodings of Cryptographic Objects	Creates and encrypts an EncryptedPrivateKeyInfo from a given PrivateKey and password.
javax.crypto.EncryptedPrivateKeyInfo.encryptKey(PrivateKey, char[], String, AlgorithmParameterSpec, Provider)PREVIEW	PEM Encodings of Cryptographic Objects	Creates and encrypts an EncryptedPrivateKeyInfo from a given PrivateKey.
javax.crypto.EncryptedPrivateKeyInfo.encryptKey(PrivateKey, Key, String, AlgorithmParameterSpec, Provider, SecureRandom)PREVIEW	PEM Encodings of Cryptographic Objects	Creates and encrypts an EncryptedPrivateKeyInfo from the given PrivateKey using the encKey and given parameters.
javax.crypto.EncryptedPrivateKeyInfo.getKey(char[])PREVIEW	PEM Encodings of Cryptographic Objects	Extract the enclosed PrivateKey object from the encrypted data and return it.
javax.crypto.EncryptedPrivateKeyInfo.getKey(Key, Provider)PREVIEW	PEM Encodings of Cryptographic Objects	Extract the enclosed PrivateKey object from the encrypted data and return it.

Enum Constant	Preview Feature	Description
java.lang.reflect.AccessFlag.IDENTITYPREVIEW	Value Classes and Objects	The access flag ACC_IDENTITY, corresponding to the modifier identityPREVIEW, with a mask value of 0x0020.
java.lang.reflect.AccessFlag.STRICT_INITPREVIEW	Value Classes and Objects	The access flag ACC_STRICT_INIT, with a mask value of 0x0800.