New APIs in Java 28

Comparing Java 28 (28-ea+21-1707-open) with Java 27 (27.0.1.0.2+1-tem).

Element	Modification
java.base
java.lang.classfile.attribute
LoadableDescriptorsAttribute	added preview
StackMapFrameInfo
of(Label, List, List, List)	added preview
unsetFields()	added preview
java.lang.classfile
Attributes
NAME_LOADABLE_DESCRIPTORS	added preview
loadableDescriptors()	added preview
ClassFile
ACC_IDENTITY	added preview
ACC_STRICT_INIT	added preview
JAVA_28_VERSION	added
java.lang.constant
DynamicCallSiteDesc	+ implements ConstantDescs.CallSiteBootstrapMethodHook
bootstrapMethod()	added
bootstrapMethod()	removed
ConstantDescs.CallSiteBootstrapMethodHook	added
java.lang.invoke
MethodHandles
synchronize(MethodHandle)	added
java.lang.reflect
Field
isStrictInit()	added preview
AccessFlag
IDENTITY	added preview
STRICT_INIT	added preview
ClassFileFormatVersion
RELEASE_28	added
java.lang
Class
isValue()	added preview
IdentityException	added preview
String
codePointCount()	added
java.security
PEMDecoder	- preview
PEMEncoder	- preview
PEM	- preview
BinaryEncodable	- preview
java.util.concurrent
StructureViolationException	- preview
StructuredTaskScope.CancelledByTimeoutException	- preview
StructuredTaskScope.Subtask.State	- preview
StructuredTaskScope.Configuration	- preview
StructuredTaskScope.Joiner	- preview
StructuredTaskScope.Subtask	- preview
StructuredTaskScope	- preview
java.util
Objects
hasIdentity(Object)	added preview
requireIdentity(Object)	added preview
requireIdentity(Object, String)	added preview
requireIdentity(Object, Supplier)	added preview
PriorityQueue
PriorityQueue(Collection, Comparator)	added
javax.crypto
CryptoException	- preview
EncryptedPrivateKeyInfo
encrypt(BinaryEncodable, Key, String,...	- preview
encrypt(BinaryEncodable, char[])	- preview
encrypt(BinaryEncodable, char[], String,...	- preview
getKey(Key)	- preview
getKey(char[])	- preview
getKeyPair(Key)	- preview
getKeyPair(char[])	- preview
javax.net.ssl
ExtendedSSLSession
getNamedGroup()	added
SSLEngine
getSupportedNamedGroups()	added
SSLServerSocket
getSupportedNamedGroups()	added
SSLSocket
getSupportedNamedGroups()	added
java.compiler
javax.lang.model.element
Modifier
VALUE	added preview
javax.lang.model
SourceVersion
RELEASE_28	added
java.management
javax.management.openmbean
OpenType
ALLOWED_CLASSNAMES	+ forRemoval

Data Source

This report is based on simple comparison of all public and protected APIs of the Java SE packages of JDK builds 28-ea+21-1707-open and 27.0.1.0.2+1-tem. It does not make statements about compatibility.

For the latest Java versions the corresponding CSRs (Compatibility & Specification Review) are linked for a quick reference to find out about the reasoning of the change.