New APIs in Java 27

Comparing Java 27 (27-ea+21-1925-open) with Java 24 (24.0.2+12-tem).

Element	Modification
java.base
java.io
Console
print(Object)	removed preview
println()	removed preview
println(Object)	removed preview
readln()	removed preview
readln(String)	removed preview
FilePermission	+ deprecated + forRemoval
IO	removed preview
OptionalDataException	+ final
Reader
readAllAsString()	added
readAllLines()	added
SerializablePermission	+ deprecated + forRemoval
java.lang.classfile.attribute
UnknownAttribute	+ implements CodeElement
java.lang.classfile.constantpool
ClassEntry
matches(ClassDesc)	added
MethodTypeEntry
matches(MethodTypeDesc)	added
ModuleEntry
matches(ModuleDesc)	added
PackageEntry
matches(PackageDesc)	added
StringEntry
equalsString(String)	added
Utf8Entry
isFieldType(ClassDesc)	added
isMethodType(MethodTypeDesc)	added
java.lang.classfile.instruction
IncrementInstruction
of(Opcode, int, int)	added
java.lang.classfile
ClassFile
JAVA_25_VERSION	added
JAVA_26_VERSION	added
JAVA_27_VERSION	added
Signature.ClassTypeSig
of(Signature.ClassTypeSig, ClassDesc,...	+ deprecated + forRemoval
java.lang.constant
DynamicCallSiteDesc	+ final
java.lang.foreign
MemorySegment
copy(String, Charset, int, MemorySegment, long,...	added
getString(long, Charset, long)	added
SegmentAllocator
allocateFrom(String, Charset, int, int)	added
java.lang.invoke
MethodHandleProxies	+ final
MethodHandles	+ final
java.lang.module
ModuleDescriptor	+ final
java.lang.reflect
Executable
toGenericString()	- abstract
Modifier	+ final
classModifiers()	+ deprecated
constructorModifiers()	+ deprecated
fieldModifiers()	+ deprecated
interfaceModifiers()	+ deprecated
methodModifiers()	+ deprecated
parameterModifiers()	+ deprecated
toString(int)	+ deprecated
ReflectPermission	+ deprecated + forRemoval
AccessFlag.Location
flags()	added
flags(ClassFileFormatVersion)	added
flagsMask()	added
flagsMask(ClassFileFormatVersion)	added
AccessFlag
maskToAccessFlags(int, AccessFlag.Location,...	added
ClassFileFormatVersion
RELEASE_25	added
RELEASE_26	added
RELEASE_27	added
java.lang.runtime
ObjectMethods	+ final
SwitchBootstraps	+ final
java.lang
Boolean
Boolean(String)	- forRemoval
Boolean(boolean)	- forRemoval
Byte
Byte(String)	- forRemoval
Byte(byte)	- forRemoval
Character.UnicodeBlock
BERIA_ERFE	added
CJK_UNIFIED_IDEOGRAPHS_EXTENSION_J	added
MISCELLANEOUS_SYMBOLS_SUPPLEMENT	added
SHARADA_SUPPLEMENT	added
SIDETIC	added
TAI_YO	added
TANGUT_COMPONENTS_SUPPLEMENT	added
TOLONG_SIKI	added
Character
Character(char)	- forRemoval
Double
Double(String)	- forRemoval
Double(double)	- forRemoval
Float
Float(String)	- forRemoval
Float(double)	- forRemoval
Float(float)	- forRemoval
IO	added
Integer
Integer(String)	- forRemoval
Integer(int)	- forRemoval
Long
Long(String)	- forRemoval
Long(long)	- forRemoval
Math
acosh(double)	added
asinh(double)	added
atanh(double)	added
powExact(int, int)	added
powExact(long, int)	added
unsignedMultiplyExact(int, int)	added
unsignedMultiplyExact(long, int)	added
unsignedMultiplyExact(long, long)	added
unsignedPowExact(int, int)	added
unsignedPowExact(long, int)	added
Package	+ final
Process	+ implements Closeable
close()	added
RuntimePermission	+ deprecated + forRemoval
Runtime	+ final
ScopedValue.Carrier	- preview
ScopedValue	- preview
Short
Short(String)	- forRemoval
Short(short)	- forRemoval
StrictMath
acosh(double)	added
asinh(double)	added
atanh(double)	added
powExact(int, int)	added
powExact(long, int)	added
unsignedMultiplyExact(int, int)	added
unsignedMultiplyExact(long, int)	added
unsignedMultiplyExact(long, long)	added
unsignedPowExact(int, int)	added
unsignedPowExact(long, int)	added
String
UNICODE_CASEFOLD_ORDER	added
compareToFoldCase(String)	added
encodedLength(Charset)	added
equalsFoldCase(String)	added
Thread
stop()	removed
Character.UnicodeScript
BERIA_ERFE	added
SIDETIC	added
TAI_YO	added
TOLONG_SIKI	added
CharSequence
getChars(int, int, char[], int)	added
LazyConstant	added preview
ScopedValue.CallableOp	- preview
java.math
BigInteger
rootn(int)	added
rootnAndRemainder(int)	added
java.net
DatagramSocketImpl
getTTL()	removed
setTTL(byte)	removed
HttpURLConnection
getPermission()	+ deprecated + forRemoval
InterfaceAddress	+ final
MulticastSocket
getTTL()	removed
send(DatagramPacket, byte)	removed
setTTL(byte)	removed
NetPermission	+ deprecated + forRemoval
ServerSocket
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
SocketImpl
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
SocketPermission	+ deprecated + forRemoval
Socket
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
URLConnection
getPermission()	+ deprecated + forRemoval
URLDecoder	+ final
URLEncoder	+ final
URLPermission	+ deprecated + forRemoval
java.nio.charset
CoderResult	+ final
CodingErrorAction	+ final
java.nio.file
LinkPermission	+ deprecated + forRemoval
java.nio
CharBuffer
getChars(int, int, char[], int)	added
ByteOrder	- extends Object + extends Enum
toString()	removed
valueOf(String)	added
values()	added
java.security.cert
X509CRL	+ implements DEREncodable
X509Certificate	+ implements DEREncodable
java.security.spec
PKCS8EncodedKeySpec	+ implements DEREncodable
X509EncodedKeySpec	+ implements DEREncodable
java.security
DrbgParameters	+ final
KeyPair	+ implements DEREncodable
KeyStoreSpi
engineGetCreationInstant(String)	added
KeyStore
getCreationInstant(String)	added
PEMDecoder	added preview
PEMEncoder	added preview
PEM	added preview
SecureRandom
nextLong()	added
SecurityPermission	+ deprecated + forRemoval
UnresolvedPermission	+ deprecated + forRemoval
AsymmetricKey	+ implements DEREncodable
DEREncodable	added preview
java.time.format
DateTimeFormatterPatternProvider	added
java.time
Duration
MAX	added
MIN	added
Instant
plusSaturating(Duration)	added
java.util.concurrent.locks
LockSupport	+ final
java.util.concurrent
Executors	+ final
ForkJoinPool	+ implements ScheduledExecutorService
cancelDelayedTasksOnShutdown()	added
getDelayedTaskCount()	added
schedule(Callable, long, TimeUnit)	added
schedule(Runnable, long, TimeUnit)	added
scheduleAtFixedRate(Runnable, long, long,...	added
scheduleWithFixedDelay(Runnable, long, long,...	added
submitWithTimeout(Callable, long, TimeUnit,...	added
StructuredTaskScope.CancelledByTimeoutException	added preview
StructuredTaskScope.ShutdownOnFailure	removed preview
StructuredTaskScope.ShutdownOnSuccess	removed preview
ThreadLocalRandom
nextGaussian()	added
ThreadPoolExecutor
finalize()	removed
StructuredTaskScope.Configuration	added preview
StructuredTaskScope.Joiner	added preview
StructuredTaskScope.Subtask
task()	removed preview
StructuredTaskScope	+ abstract + sealed
StructuredTaskScope()	removed preview
StructuredTaskScope(String, ThreadFactory)	removed preview
close()	+ abstract
ensureOwnerAndJoined()	removed preview
fork(Callable)	+ abstract
fork(Runnable)	added preview
handleComplete(StructuredTaskScope.Subtask)	removed preview
isCancelled()	added preview
isShutdown()	removed preview
join()	added preview
join()	removed preview
joinUntil(Instant)	removed preview
open()	added preview
open(StructuredTaskScope.Joiner)	added preview
open(StructuredTaskScope.Joiner, UnaryOperator)	added preview
open(UnaryOperator)	added preview
shutdown()	removed preview
toString()	removed preview
java.util.zip
Deflater	+ implements AutoCloseable
close()	added
Inflater	+ implements AutoCloseable
close()	added
java.util
Base64	+ final
Collections	+ final
Currency
availableCurrencies()	added
EnumSet
spliterator()	added
FormattableFlags	+ final
Locale
getDisplayCountry()	- final
getDisplayLanguage()	- final
getDisplayName()	- final
getDisplayVariant()	- final
PropertyPermission	+ deprecated + forRemoval
TimeZone
availableIDs()	added
availableIDs(int)	added
UUID
ofEpochMillis(long)	added
Locale.IsoCountryCode	- abstract + final
Comparator
max(Object, Object)	added
min(Object, Object)	added
List
ofLazy(int, IntFunction)	added preview
Map
ofLazy(Set, Function)	added preview
javax.crypto.spec
HKDFParameterSpec.Builder	- preview
HKDFParameterSpec.Expand	- preview
HKDFParameterSpec.ExtractThenExpand	- preview
HKDFParameterSpec.Extract	- preview
HPKEParameterSpec	added
HKDFParameterSpec	- preview
javax.crypto
EncryptedPrivateKeyInfo	+ implements DEREncodable
encrypt(DEREncodable, Key, String,...	added preview
encrypt(DEREncodable, char[])	added preview
encrypt(DEREncodable, char[], String,...	added preview
getKey(Key, Provider)	added preview
getKey(char[])	added preview
getKeyPair(Key, Provider)	added preview
getKeyPair(char[])	added preview
KDFSpi	- preview
KDF	- preview
KDFParameters	- preview
javax.net.ssl
ExtendedSSLSession
exportKeyingMaterialData(String, byte[], int)	added
exportKeyingMaterialKey(String, String, byte[],...	added
SSLPermission	+ deprecated + forRemoval
javax.security.auth
AuthPermission	+ deprecated + forRemoval
PrivateCredentialPermission	+ deprecated + forRemoval
java.compiler
javax.lang.model
SourceVersion
RELEASE_25	added
RELEASE_26	added
RELEASE_27	added
java.desktop
java.applet	removed
java.awt.geom
Arc2D
getBounds()	added
java.awt
Robot
DEFAULT_DELAY	added
DEFAULT_STEP_LENGTH	added
click()	added
click(int)	added
glide(int, int)	added
glide(int, int, int, int)	added
glide(int, int, int, int, int, int)	added
type(char)	added
type(int)	added
waitForIdle(int)	added
java.beans
Beans
instantiate(ClassLoader, String, BeanContext,...	removed
AppletInitializer	removed
javax.imageio.spi
ServiceRegistry
finalize()	removed
javax.imageio.stream
FileCacheImageInputStream
finalize()	removed
FileImageInputStream
finalize()	removed
FileImageOutputStream
finalize()	removed
ImageInputStreamImpl
finalize()	removed
MemoryCacheImageInputStream
finalize()	removed
javax.sound	added
javax.swing.plaf.basic
BasicSliderUI
BasicSliderUI()	removed
javax.swing.plaf.synth
SynthLookAndFeel
load(URL)	removed
SynthPasswordFieldUI
installKeyboardActions()	removed
javax.swing
JApplet.AccessibleJApplet	removed
JApplet	removed
RepaintManager
addDirtyRegion(Applet, int, int, int, int)	removed
java.logging
java.util.logging
LoggingPermission	+ deprecated + forRemoval
java.management
java.lang.management
ManagementPermission	+ deprecated + forRemoval
MemoryMXBean
getTotalGcCpuTime()	added
javax.management.modelmbean
DescriptorSupport
DescriptorSupport(String)	removed
toXMLString()	removed
XMLParseException	removed
javax.management.remote
SubjectDelegationPermission	+ deprecated + forRemoval
javax.management
MBeanPermission	+ deprecated + forRemoval
MBeanServerPermission	+ deprecated + forRemoval
MBeanTrustPermission	+ deprecated + forRemoval
java.net.http
java.net.http
HttpRequest.BodyPublishers
ofFileChannel(FileChannel, long, long)	added
HttpRequest
getOption(HttpOption)	added
HttpResponse.BodyHandlers
limiting(HttpResponse.BodyHandler, long)	added
HttpResponse.BodySubscribers
limiting(HttpResponse.BodySubscriber, long)	added
HttpResponse.PushPromiseHandler.PushId.Http3PushId	added
StreamLimitException	added
UnsupportedProtocolVersionException	added
HttpClient.Version
HTTP_3	added
HttpOption.Http3DiscoveryMode	added
HttpOption	added
HttpRequest.Builder
setOption(HttpOption, Object)	added
HttpResponse.PushPromiseHandler.PushId	added
HttpResponse.PushPromiseHandler
applyPushPromise(HttpRequest, HttpRequest,...	added
notifyAdditionalPromise(HttpRequest,...	added
HttpResponse
connectionLabel()	added
java.security.jgss
javax.security.auth.kerberos
DelegationPermission	+ deprecated + forRemoval
ServicePermission	+ deprecated + forRemoval
java.sql
java.sql
SQLPermission	+ deprecated + forRemoval
Types
DECFLOAT	added
JSON	added
JDBCType
DECFLOAT	added
JSON	added
Array	+ implements AutoCloseable
close()	added
Blob	+ implements AutoCloseable
close()	added
Clob	+ implements AutoCloseable
close()	added
Connection
enquoteIdentifier(String, boolean)	added
enquoteLiteral(String)	added
enquoteNCharLiteral(String)	added
isSimpleIdentifier(String)	added
SQLXML	+ implements AutoCloseable
close()	added
java.xml.crypto
javax.xml.crypto.dsig
SignatureMethod
ECDSA_SHA3_224	added
ECDSA_SHA3_256	added
ECDSA_SHA3_384	added
ECDSA_SHA3_512	added

Data Source

This report is based on simple comparison of all public and protected APIs of the Java SE packages of JDK builds 27-ea+21-1925-open and 24.0.2+12-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.