New APIs in Java 27

Comparing Java 27 (27-ea+18-1643-open) with Java 25 (25.0.3+9-LTS-tem).

Element	Modification
java.base
java.lang.classfile.instruction
IncrementInstruction
of(Opcode, int, int)	added
java.lang.classfile
ClassFile
JAVA_26_VERSION	added
JAVA_27_VERSION	added
Signature.ClassTypeSig
of(Signature.ClassTypeSig, ClassDesc,...	+ deprecated + forRemoval
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.reflect
ClassFileFormatVersion
RELEASE_26	added
RELEASE_27	added
java.lang
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
Math
acosh(double)	added
asinh(double)	added
atanh(double)	added
Process	+ implements Closeable
close()	added
StrictMath
acosh(double)	added
asinh(double)	added
atanh(double)	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
LazyConstant	added preview
StableValue	removed preview
java.math
BigInteger
rootn(int)	added
rootnAndRemainder(int)	added
java.net
DatagramSocketImpl
getTTL()	removed
setTTL(byte)	removed
MulticastSocket
getTTL()	removed
send(DatagramPacket, byte)	removed
setTTL(byte)	removed
ServerSocket
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
SocketImpl
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
SocketPermission	+ deprecated + forRemoval
Socket
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
java.nio
ByteOrder	- extends Object + extends Enum
toString()	removed
valueOf(String)	added
values()	added
java.security
KeyStoreSpi
engineGetCreationInstant(String)	added
KeyStore
getCreationInstant(String)	added
PEMRecord	removed preview
PEM	added preview
SecureRandom
nextLong()	added
java.time
Duration
MAX	added
MIN	added
Instant
plusSaturating(Duration)	added
java.util.concurrent
ThreadLocalRandom
nextGaussian()	added
ThreadPoolExecutor
finalize()	removed
StructuredTaskScope.Joiner
anySuccessfulOrThrow()	added preview
anySuccessfulResultOrThrow()	removed preview
onTimeout()	added preview
StructuredTaskScope
open(StructuredTaskScope.Joiner, Function)	removed preview
open(StructuredTaskScope.Joiner, UnaryOperator)	added preview
java.util
EnumSet
spliterator()	added
Locale
getDisplayCountry()	- final
getDisplayLanguage()	- final
getDisplayName()	- final
getDisplayVariant()	- final
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
HPKEParameterSpec	added
javax.crypto
EncryptedPrivateKeyInfo
encrypt(DEREncodable, Key, String,...	added preview
encrypt(DEREncodable, char[])	added preview
encrypt(DEREncodable, char[], String,...	added preview
encryptKey(PrivateKey, Key, String,...	removed preview
encryptKey(PrivateKey, char[])	removed preview
encryptKey(PrivateKey, char[], String,...	removed preview
getKey(Key, Provider)	- throws GeneralSecurityException + throws InvalidKeyException + throws NoSuchAlgorithmException
getKey(char[])	- throws GeneralSecurityException + throws InvalidKeyException + throws NoSuchAlgorithmException
getKeyPair(Key, Provider)	added preview
getKeyPair(char[])	added preview
java.compiler
javax.lang.model
SourceVersion
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.swing
JApplet.AccessibleJApplet	removed
JApplet	removed
RepaintManager
addDirtyRegion(Applet, int, int, int, int)	removed
java.management
java.lang.management
MemoryMXBean
getTotalGcCpuTime()	added
javax.management.modelmbean
DescriptorSupport
DescriptorSupport(String)	removed
toXMLString()	removed
XMLParseException	removed
java.net.http
java.net.http
HttpRequest.BodyPublishers
ofFileChannel(FileChannel, long, long)	added
HttpRequest
getOption(HttpOption)	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
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

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+18-1643-open and 25.0.3+9-LTS-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.