New APIs in Java 27

Comparing Java 27 (27-ea+21-1925-open) with Java 20 (20.0.2+9-tem).

Element	Modification
java.base
java.io
Console	+ sealed
format(Locale, String, Object...)	added
isTerminal()	added
printf(Locale, String, Object...)	added
readLine(Locale, String, Object...)	added
readPassword(Locale, String, Object...)	added
FilePermission	+ deprecated + forRemoval
ObjectInputStream
ObjectInputStream()	- throws SecurityException
enableResolveObject(boolean)	- throws SecurityException
ObjectOutputStream.PutField
write(ObjectOutput)	+ forRemoval
ObjectOutputStream
ObjectOutputStream()	- throws SecurityException
enableReplaceObject(boolean)	- throws SecurityException
OptionalDataException	+ final
Reader
of(CharSequence)	added
readAllAsString()	added
readAllLines()	added
SerializablePermission	+ deprecated + forRemoval
java.lang.classfile.attribute	added
java.lang.classfile.constantpool	added
java.lang.classfile.instruction	added
java.lang.classfile	added
java.lang.constant
ConstantDescs
BSM_CLASS_DATA	added
BSM_CLASS_DATA_AT	added
CLASS_INIT_NAME	added
INIT_NAME	added
MTD_void	added
DynamicCallSiteDesc	+ final
ClassDesc
arrayType()	+ abstract
arrayType(int)	+ abstract
displayName()	+ abstract
resolveConstantDesc(MethodHandles.Lookup)	added
MethodHandleDesc
resolveConstantDesc(MethodHandles.Lookup)	added
MethodTypeDesc
descriptorString()	+ abstract
of(ClassDesc)	added
of(ClassDesc, List)	added
resolveConstantDesc(MethodHandles.Lookup)	added
ModuleDesc	added
PackageDesc	added
java.lang.foreign
AddressLayout	added
Arena	- preview
allocate(long, long)	+ abstract
global()	added
isCloseableBy(Thread)	removed preview
ofAuto()	added
ofConfined()	added
ofShared()	added
openConfined()	removed preview
openShared()	removed preview
scope()	added
scope()	removed preview
FunctionDescriptor	- preview
GroupLayout	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
Linker.Option.CaptureCallState	removed preview
Linker.Option	- preview
captureCallState(String...)	added
captureCallState(String...)	removed preview
captureStateLayout()	added
critical(boolean)	added
Linker	- preview
canonicalLayouts()	added
downcallHandle(MemorySegment, FunctionDescriptor,...	+ abstract
upcallStub(MethodHandle, FunctionDescriptor,...	added
upcallStub(MethodHandle, FunctionDescriptor,...	removed preview
MemoryLayout.PathElement	- preview
dereferenceElement()	added
groupElement(long)	added
MemoryLayout	- preview
arrayElementVarHandle(MemoryLayout.PathElement...)	added
bitAlignment()	removed preview
bitOffset(MemoryLayout.PathElement...)	removed preview
bitOffsetHandle(MemoryLayout.PathElement...)	removed preview
bitSize()	removed preview
byteAlignment()	+ abstract
byteOffset(MemoryLayout.PathElement...)	+ abstract
byteOffsetHandle(MemoryLayout.PathElement...)	+ abstract
scale(long, long)	added
scaleHandle()	added
select(MemoryLayout.PathElement...)	+ abstract
sequenceLayout(MemoryLayout)	removed preview
sliceHandle(MemoryLayout.PathElement...)	+ abstract
valueLayout(Class, ByteOrder)	removed preview
varHandle(MemoryLayout.PathElement...)	+ abstract
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
MemorySegment.Scope	added
MemorySegment	- preview
allocateNative(MemoryLayout, SegmentScope)	removed preview
allocateNative(long, SegmentScope)	removed preview
allocateNative(long, long, SegmentScope)	removed preview
array()	removed preview
asSlice(long)	+ abstract
asSlice(long, MemoryLayout)	added
asSlice(long, long, long)	added
copy(String, Charset, int, MemorySegment, long,...	added
copyFrom(MemorySegment)	+ abstract
get(AddressLayout, long)	added
get(ValueLayout.OfAddress, long)	removed preview
get(ValueLayout.OfBoolean, long)	+ abstract
get(ValueLayout.OfByte, long)	+ abstract
get(ValueLayout.OfChar, long)	+ abstract
get(ValueLayout.OfDouble, long)	+ abstract
get(ValueLayout.OfFloat, long)	+ abstract
get(ValueLayout.OfInt, long)	+ abstract
get(ValueLayout.OfLong, long)	+ abstract
get(ValueLayout.OfShort, long)	+ abstract
getAtIndex(AddressLayout, long)	added
getAtIndex(ValueLayout.OfAddress, long)	removed preview
getAtIndex(ValueLayout.OfBoolean, long)	added
getAtIndex(ValueLayout.OfByte, long)	added
getAtIndex(ValueLayout.OfChar, long)	+ abstract
getAtIndex(ValueLayout.OfDouble, long)	+ abstract
getAtIndex(ValueLayout.OfFloat, long)	+ abstract
getAtIndex(ValueLayout.OfInt, long)	+ abstract
getAtIndex(ValueLayout.OfLong, long)	+ abstract
getAtIndex(ValueLayout.OfShort, long)	+ abstract
getString(long)	added
getString(long, Charset)	added
getString(long, Charset, long)	added
getUtf8String(long)	removed preview
heapBase()	added
isAccessibleBy(Thread)	added
maxByteAlignment()	added
mismatch(MemorySegment)	+ abstract
ofAddress(long, long)	removed preview
ofAddress(long, long, SegmentScope)	removed preview
ofAddress(long, long, SegmentScope, Runnable)	removed preview
reinterpret(Arena, Consumer)	added
reinterpret(long)	added
reinterpret(long, Arena, Consumer)	added
scope()	added
scope()	removed preview
segmentOffset(MemorySegment)	removed preview
set(AddressLayout, long, MemorySegment)	added
set(ValueLayout.OfAddress, long, MemorySegment)	removed preview
set(ValueLayout.OfBoolean, long, boolean)	+ abstract
set(ValueLayout.OfByte, long, byte)	+ abstract
set(ValueLayout.OfChar, long, char)	+ abstract
set(ValueLayout.OfDouble, long, double)	+ abstract
set(ValueLayout.OfFloat, long, float)	+ abstract
set(ValueLayout.OfInt, long, int)	+ abstract
set(ValueLayout.OfLong, long, long)	+ abstract
set(ValueLayout.OfShort, long, short)	+ abstract
setAtIndex(AddressLayout, long, MemorySegment)	added
setAtIndex(ValueLayout.OfAddress, long,...	removed preview
setAtIndex(ValueLayout.OfBoolean, long, boolean)	added
setAtIndex(ValueLayout.OfByte, long, byte)	added
setAtIndex(ValueLayout.OfChar, long, char)	+ abstract
setAtIndex(ValueLayout.OfDouble, long, double)	+ abstract
setAtIndex(ValueLayout.OfFloat, long, float)	+ abstract
setAtIndex(ValueLayout.OfInt, long, int)	+ abstract
setAtIndex(ValueLayout.OfLong, long, long)	+ abstract
setAtIndex(ValueLayout.OfShort, long, short)	+ abstract
setString(long, String)	added
setString(long, String, Charset)	added
setUtf8String(long, String)	removed preview
PaddingLayout	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
SegmentAllocator	- preview
allocate(MemoryLayout, long)	added
allocate(ValueLayout.OfAddress, MemorySegment)	removed preview
allocate(ValueLayout.OfByte, byte)	removed preview
allocate(ValueLayout.OfChar, char)	removed preview
allocate(ValueLayout.OfDouble, double)	removed preview
allocate(ValueLayout.OfFloat, float)	removed preview
allocate(ValueLayout.OfInt, int)	removed preview
allocate(ValueLayout.OfLong, long)	removed preview
allocate(ValueLayout.OfShort, short)	removed preview
allocateArray(MemoryLayout, long)	removed preview
allocateArray(ValueLayout.OfByte, byte...)	removed preview
allocateArray(ValueLayout.OfChar, char...)	removed preview
allocateArray(ValueLayout.OfDouble, double...)	removed preview
allocateArray(ValueLayout.OfFloat, float...)	removed preview
allocateArray(ValueLayout.OfInt, int...)	removed preview
allocateArray(ValueLayout.OfLong, long...)	removed preview
allocateArray(ValueLayout.OfShort, short...)	removed preview
allocateFrom(AddressLayout, MemorySegment)	added
allocateFrom(String)	added
allocateFrom(String, Charset)	added
allocateFrom(String, Charset, int, int)	added
allocateFrom(ValueLayout, MemorySegment,...	added
allocateFrom(ValueLayout.OfByte, byte)	added
allocateFrom(ValueLayout.OfByte, byte...)	added
allocateFrom(ValueLayout.OfChar, char)	added
allocateFrom(ValueLayout.OfChar, char...)	added
allocateFrom(ValueLayout.OfDouble, double)	added
allocateFrom(ValueLayout.OfDouble, double...)	added
allocateFrom(ValueLayout.OfFloat, float)	added
allocateFrom(ValueLayout.OfFloat, float...)	added
allocateFrom(ValueLayout.OfInt, int)	added
allocateFrom(ValueLayout.OfInt, int...)	added
allocateFrom(ValueLayout.OfLong, long)	added
allocateFrom(ValueLayout.OfLong, long...)	added
allocateFrom(ValueLayout.OfShort, short)	added
allocateFrom(ValueLayout.OfShort, short...)	added
allocateUtf8String(String)	removed preview
nativeAllocator(SegmentScope)	removed preview
SegmentScope	removed preview
SequenceLayout	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
StructLayout	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
SymbolLookup	- preview
findOrThrow(String)	added
libraryLookup(Path, Arena)	added
libraryLookup(Path, SegmentScope)	removed preview
libraryLookup(String, Arena)	added
libraryLookup(String, SegmentScope)	removed preview
or(SymbolLookup)	added
UnionLayout	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
VaList.Builder	removed preview
VaList	removed preview
ValueLayout.OfAddress	removed preview
ValueLayout.OfBoolean	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfByte	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfChar	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfDouble	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfFloat	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfInt	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfLong	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout.OfShort	- preview
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
ValueLayout	- preview
arrayElementVarHandle(int...)	removed preview
varHandle()	added
withBitAlignment(long)	removed preview
withByteAlignment(long)	added
withoutName()	added
java.lang.invoke
MethodHandleProxies	+ final
MethodHandles	+ final
collectCoordinates(VarHandle, int, MethodHandle)	- preview
dropCoordinates(VarHandle, int, Class...)	- preview
filterCoordinates(VarHandle, int, MethodHandle...)	- preview
filterValue(VarHandle, MethodHandle, MethodHandle)	- preview
insertCoordinates(VarHandle, int, Object...)	- preview
memorySegmentViewVarHandle(ValueLayout)	removed preview
permuteCoordinates(VarHandle, List, int...)	- preview
VarHandle
isAccessModeSupported(VarHandle.AccessMode)	- 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_21	added
RELEASE_22	added
RELEASE_23	added
RELEASE_24	added
RELEASE_25	added
RELEASE_26	added
RELEASE_27	added
java.lang.runtime
ExactConversionsSupport	added
ObjectMethods	+ final
SwitchBootstraps	- preview + 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_I	added
CJK_UNIFIED_IDEOGRAPHS_EXTENSION_J	added
EGYPTIAN_HIEROGLYPHS_EXTENDED_A	added
GARAY	added
GURUNG_KHEMA	added
KIRAT_RAI	added
MISCELLANEOUS_SYMBOLS_SUPPLEMENT	added
MYANMAR_EXTENDED_C	added
OL_ONAL	added
SHARADA_SUPPLEMENT	added
SIDETIC	added
SUNUWAR	added
SYMBOLS_FOR_LEGACY_COMPUTING_SUPPLEMENT	added
TAI_YO	added
TANGUT_COMPONENTS_SUPPLEMENT	added
TODHRI	added
TOLONG_SIKI	added
TULU_TIGALARI	added
Character
Character(char)	- forRemoval
isEmoji(int)	added
isEmojiComponent(int)	added
isEmojiModifier(int)	added
isEmojiModifierBase(int)	added
isEmojiPresentation(int)	added
isExtendedPictographic(int)	added
Class
forPrimitiveName(String)	added
getConstructor(Class...)	- throws SecurityException
getConstructors()	- throws SecurityException
getDeclaredClasses()	- throws SecurityException
getDeclaredConstructor(Class...)	- throws SecurityException
getDeclaredConstructors()	- throws SecurityException
getDeclaredField(String)	- throws SecurityException
getDeclaredFields()	- throws SecurityException
getDeclaredMethod(String, Class...)	- throws SecurityException
getDeclaredMethods()	- throws SecurityException
getDeclaringClass()	- throws SecurityException
getEnclosingClass()	- throws SecurityException
getEnclosingConstructor()	- throws SecurityException
getEnclosingMethod()	- throws SecurityException
getField(String)	- throws SecurityException
getFields()	- throws SecurityException
getMethod(String, Class...)	- throws SecurityException
getMethods()	- throws SecurityException
Compiler	removed
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
MatchException	- preview
Math
acosh(double)	added
asinh(double)	added
atanh(double)	added
clamp(double, double, double)	added
clamp(float, float, float)	added
clamp(long, int, int)	added
clamp(long, long, long)	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
ModuleLayer.Controller
enableNativeAccess(Module)	- preview
Module
isNativeAccessEnabled()	- preview
Package	+ final
Process	+ implements Closeable
close()	added
waitFor(Duration)	added
RuntimePermission	+ deprecated + forRemoval
Runtime	+ final
ScopedValue.Carrier	added
ScopedValue	added
SecurityManager
checkMulticast(InetAddress, byte)	- deprecated - forRemoval
Short
Short(String)	- forRemoval
Short(short)	- forRemoval
StrictMath
acosh(double)	added
asinh(double)	added
atanh(double)	added
clamp(double, double, double)	added
clamp(float, float, float)	added
clamp(long, int, int)	added
clamp(long, long, long)	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
StringBuffer	+ implements Appendable
repeat(CharSequence, int)	added
repeat(int, int)	added
StringBuilder	+ implements Appendable
repeat(CharSequence, int)	added
repeat(int, int)	added
String
UNICODE_CASEFOLD_ORDER	added
compareToFoldCase(String)	added
encodedLength(Charset)	added
equalsFoldCase(String)	added
indexOf(String, int, int)	added
indexOf(int, int, int)	added
splitWithDelimiters(String, int)	added
ThreadGroup
allowThreadSuspension(boolean)	removed
resume()	removed
stop()	removed
suspend()	removed
Thread
countStackFrames()	removed
isVirtual()	- preview
ofPlatform()	- preview
ofVirtual()	- preview
resume()	removed
startVirtualThread(Runnable)	- preview
stop()	removed
suspend()	removed
Character.UnicodeScript
BERIA_ERFE	added
GARAY	added
GURUNG_KHEMA	added
KIRAT_RAI	added
OL_ONAL	added
SIDETIC	added
SUNUWAR	added
TAI_YO	added
TODHRI	added
TOLONG_SIKI	added
TULU_TIGALARI	added
StackWalker.Option
DROP_METHOD_INFO	added
CharSequence
getChars(int, int, char[], int)	added
LazyConstant	added preview
ScopedValue.CallableOp	added
Thread.Builder.OfPlatform	- preview
allowSetThreadLocals(boolean)	removed preview
Thread.Builder.OfVirtual	- preview
allowSetThreadLocals(boolean)	removed preview
Thread.Builder	- preview
allowSetThreadLocals(boolean)	removed preview
java.math
BigInteger
rootn(int)	added
rootnAndRemainder(int)	added
java.net
DatagramSocketImpl
getTTL()	removed
setTTL(byte)	removed
HttpURLConnection
getPermission()	+ deprecated + forRemoval
Inet4Address
ofLiteral(String)	added
ofPosixLiteral(String)	added
Inet6Address
ofLiteral(String)	added
InetAddress
ofLiteral(String)	added
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
Socket(InetAddress, int, boolean)	+ forRemoval
Socket(String, int, boolean)	+ forRemoval
setPerformancePreferences(int, int, int)	+ deprecated + forRemoval
URLConnection
getPermission()	+ deprecated + forRemoval
URLDecoder	+ final
URLEncoder	+ final
URLPermission	+ deprecated + forRemoval
java.nio.channels
FileChannel
map(FileChannel.MapMode, long, long, Arena)	added
map(FileChannel.MapMode, long, long, SegmentScope)	removed preview
java.nio.charset
CoderResult	+ final
CodingErrorAction	+ final
StandardCharsets
UTF_32BE	added
UTF_32LE	added
UTF_32	added
java.nio.file
LinkPermission	+ deprecated + forRemoval
Path
resolve(Path, Path...)	added
resolve(String, String...)	added
java.nio
CharBuffer
getChars(int, int, char[], int)	added
ByteOrder	- extends Object + extends Enum
toString()	removed
valueOf(String)	added
values()	added
java.security.cert
CertStore
getDefaultType()	+ final
X509CRL	+ implements DEREncodable
X509Certificate	+ implements DEREncodable
java.security.interfaces
DSAParams	+ implements AlgorithmParameterSpec
DSAPrivateKey
getParams()	added
DSAPublicKey
getParams()	added
ECPrivateKey
getParams()	added
ECPublicKey
getParams()	added
EdECPrivateKey
getParams()	added
EdECPublicKey
getParams()	added
RSAPrivateKey
getParams()	added
RSAPublicKey
getParams()	added
XECPrivateKey
getParams()	added
XECPublicKey
getParams()	added
java.security.spec
NamedParameterSpec
ML_DSA_44	added
ML_DSA_65	added
ML_DSA_87	added
ML_KEM_1024	added
ML_KEM_512	added
ML_KEM_768	added
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	added
DEREncodable	added preview
PrivateKey	- implements Key + implements AsymmetricKey
PublicKey	- implements Key + implements AsymmetricKey
java.text
ChoiceFormat
isStrict()	added
setStrict(boolean)	added
toString()	added
CompactNumberFormat
isStrict()	added
setStrict(boolean)	added
toString()	added
DecimalFormat
isStrict()	added
setStrict(boolean)	added
toString()	added
ListFormat	added
MessageFormat
toString()	added
NumberFormat
isStrict()	added
setStrict(boolean)	added
SimpleDateFormat
toString()	added
ListFormat.Style	added
ListFormat.Type	added
java.time.format
DateTimeFormatterPatternProvider	added
java.time
Duration
MAX	added
MIN	added
Instant
plusSaturating(Duration)	added
until(Instant)	added
java.util.concurrent.locks
LockSupport	+ final
java.util.concurrent
ConcurrentSkipListMap
putFirst(Object, Object)	added
putLast(Object, Object)	added
ConcurrentSkipListSet
addFirst(Object)	added
addLast(Object)	added
CopyOnWriteArrayList
addFirst(Object)	added
addLast(Object)	added
getFirst()	added
getLast()	added
removeFirst()	added
removeLast()	added
reversed()	added
DelayQueue
remove()	added
Executors	+ final
newThreadPerTaskExecutor(ThreadFactory)	- preview
newVirtualThreadPerTaskExecutor()	- preview
ForkJoinPool	+ implements ScheduledExecutorService
cancelDelayedTasksOnShutdown()	added
getDelayedTaskCount()	added
invokeAll(Collection)	+ throws InterruptedException
invokeAllUninterruptibly(Collection)	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
ForkJoinTask
adaptInterruptible(Runnable)	added
adaptInterruptible(Runnable, Object)	added
StructureViolationException	added preview
StructuredTaskScope.CancelledByTimeoutException	added preview
ThreadLocalRandom
nextGaussian()	added
ThreadPoolExecutor
finalize()	removed
StructuredTaskScope.Subtask.State	added preview
StructuredTaskScope.Configuration	added preview
StructuredTaskScope.Joiner	added preview
StructuredTaskScope.Subtask	added preview
StructuredTaskScope	added preview
java.util.random
RandomGenerator
equiDoubles(double, double, boolean, boolean)	added
java.util.regex
Pattern
splitWithDelimiters(CharSequence, int)	added
java.util.stream
Gatherers	added
Gatherer.Downstream	added
Gatherer.Integrator.Greedy	added
Gatherer.Integrator	added
Gatherer	added
Stream
gather(Gatherer)	added
java.util.zip
Deflater	+ implements AutoCloseable
close()	added
getTotalIn()	+ deprecated
getTotalOut()	+ deprecated
Inflater	+ implements AutoCloseable
close()	added
getTotalIn()	+ deprecated
getTotalOut()	+ deprecated
ZipError	+ deprecated + forRemoval
ZipFile
toString()	added
java.util
ArrayList
addFirst(Object)	added
addLast(Object)	added
getFirst()	added
getLast()	added
removeFirst()	added
removeLast()	added
Arrays	+ final
Base64	+ final
Collections	+ final
newSequencedSetFromMap(SequencedMap)	added
shuffle(List, RandomGenerator)	added
unmodifiableSequencedCollection(SequencedCollectio...	added
unmodifiableSequencedMap(SequencedMap)	added
unmodifiableSequencedSet(SequencedSet)	added
Currency
availableCurrencies()	added
EnumSet
spliterator()	added
FormattableFlags	+ final
LinkedHashMap	- implements Map + implements SequencedMap
putFirst(Object, Object)	added
putLast(Object, Object)	added
reversed()	added
sequencedEntrySet()	added
sequencedKeySet()	added
sequencedValues()	added
LinkedHashSet	- implements Set + implements SequencedSet
addFirst(Object)	added
addLast(Object)	added
getFirst()	added
getLast()	added
removeFirst()	added
removeLast()	added
reversed()	added
LinkedList
reversed()	added
Locale
availableLocales()	added
caseFoldLanguageTag(String)	added
getDisplayCountry()	- final
getDisplayLanguage()	- final
getDisplayName()	- final
getDisplayVariant()	- final
PropertyPermission	+ deprecated + forRemoval
TimeZone
availableIDs()	added
availableIDs(int)	added
TreeMap
putFirst(Object, Object)	added
putLast(Object, Object)	added
TreeSet
addFirst(Object)	added
addLast(Object)	added
UUID
ofEpochMillis(long)	added
Locale.IsoCountryCode	- abstract + final
Comparator
max(Object, Object)	added
min(Object, Object)	added
Deque	+ implements SequencedCollection
reversed()	added
List	- implements Collection + implements SequencedCollection
addFirst(Object)	added
addLast(Object)	added
getFirst()	added
getLast()	added
ofLazy(int, IntFunction)	added preview
removeFirst()	added
removeLast()	added
reversed()	added
Map
ofLazy(Set, Function)	added preview
NavigableMap
reversed()	added
NavigableSet
removeFirst()	added
removeLast()	added
reversed()	added
SequencedCollection	added
SequencedMap	added
SequencedSet	added
SortedMap	- implements Map + implements SequencedMap
putFirst(Object, Object)	added
putLast(Object, Object)	added
reversed()	added
SortedSet	+ implements SequencedSet
addFirst(Object)	added
addLast(Object)	added
getFirst()	added
getLast()	added
removeFirst()	added
removeLast()	added
reversed()	added
javax.crypto.interfaces
DHPrivateKey
getParams()	added
DHPublicKey
getParams()	added
javax.crypto.spec
HKDFParameterSpec.Builder	added
HKDFParameterSpec.Expand	added
HKDFParameterSpec.ExtractThenExpand	added
HKDFParameterSpec.Extract	added
HPKEParameterSpec	added
HKDFParameterSpec	added
javax.crypto
DecapsulateException	added
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	added
KDF	added
KEM.Decapsulator	added
KEM.Encapsulated	added
KEM.Encapsulator	added
KEM	added
KDFParameters	added
KEMSpi.DecapsulatorSpi	added
KEMSpi.EncapsulatorSpi	added
KEMSpi	added
javax.net.ssl
ExtendedSSLSession
exportKeyingMaterialData(String, byte[], int)	added
exportKeyingMaterialKey(String, String, byte[],...	added
KeyManagerFactory
getDefaultAlgorithm()	+ final
SSLPermission	+ deprecated + forRemoval
TrustManagerFactory
getDefaultAlgorithm()	+ final
javax.security.auth
AuthPermission	+ deprecated + forRemoval
PrivateCredentialPermission	+ deprecated + forRemoval
java.compiler
javax.lang.model.element
RecordComponentElement
asType()	added
VariableElement
isUnnamed()	added
javax.lang.model.util
AbstractAnnotationValueVisitorPreview	added preview
AbstractElementVisitorPreview	added preview
AbstractTypeVisitorPreview	added preview
ElementKindVisitorPreview	added preview
ElementScanner6
visitRecordComponent(RecordComponentElement,...	added
ElementScannerPreview	added preview
SimpleAnnotationValueVisitorPreview	added preview
SimpleElementVisitorPreview	added preview
SimpleTypeVisitorPreview	added preview
TypeKindVisitorPreview	added preview
Elements.DocCommentKind	added
Elements
getDocCommentKind(Element)	added
getEnumConstantBody(VariableElement)	added
Types
stripAnnotations(TypeMirror)	added
javax.lang.model
SourceVersion
RELEASE_21	added
RELEASE_22	added
RELEASE_23	added
RELEASE_24	added
RELEASE_25	added
RELEASE_26	added
RELEASE_27	added
javax.tools
SimpleJavaFileObject
forSource(URI, String)	added
java.desktop
java.applet	removed
java.awt.geom
Arc2D
getBounds()	added
java.awt
AWTPermission	+ deprecated + forRemoval
KeyboardFocusManager
clearGlobalFocusOwner()	- throws SecurityException
getGlobalActiveWindow()	- throws SecurityException
getGlobalCurrentFocusCycleRoot()	- throws SecurityException
getGlobalFocusOwner()	- throws SecurityException
getGlobalFocusedWindow()	- throws SecurityException
getGlobalPermanentFocusOwner()	- throws SecurityException
setCurrentKeyboardFocusManager(KeyboardFocusManage...	- throws SecurityException
setGlobalActiveWindow(Window)	- throws SecurityException
setGlobalCurrentFocusCycleRoot(Container)	- throws SecurityException
setGlobalFocusOwner(Component)	- throws SecurityException
setGlobalFocusedWindow(Window)	- throws SecurityException
setGlobalPermanentFocusOwner(Component)	- throws SecurityException
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
Window
getWarningString()	+ deprecated + forRemoval
setAlwaysOnTop(boolean)	- throws SecurityException
java.beans.beancontext
BeanContextChildSupport	+ deprecated + forRemoval
BeanContextEvent	+ deprecated + forRemoval
BeanContextMembershipEvent	+ deprecated + forRemoval
BeanContextServiceAvailableEvent	+ deprecated + forRemoval
BeanContextServiceRevokedEvent	+ deprecated + forRemoval
BeanContextServicesSupport	+ deprecated + forRemoval
BeanContextSupport	+ deprecated + forRemoval
BeanContextChildComponentProxy	+ deprecated + forRemoval
BeanContextChild	+ deprecated + forRemoval
BeanContextContainerProxy	+ deprecated + forRemoval
BeanContextMembershipListener	+ deprecated + forRemoval
BeanContextProxy	+ deprecated + forRemoval
BeanContextServiceProviderBeanInfo	+ deprecated + forRemoval
BeanContextServiceProvider	+ deprecated + forRemoval
BeanContextServiceRevokedListener	+ deprecated + forRemoval
BeanContextServicesListener	+ deprecated + forRemoval
BeanContextServices	+ deprecated + forRemoval
BeanContext	+ deprecated + forRemoval
java.beans
Beans
instantiate(ClassLoader, String, BeanContext)	+ deprecated + forRemoval
instantiate(ClassLoader, String, BeanContext,...	removed
setDesignTime(boolean)	- throws SecurityException
setGuiAvailable(boolean)	- throws SecurityException
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.print.attribute.standard
OutputBin	added
javax.sound.sampled
AudioPermission	+ deprecated + forRemoval
javax.sound	added
javax.swing.plaf.basic
BasicSliderUI
BasicSliderUI()	removed
BasicSplitPaneDivider
setEnabled(boolean)	added
javax.swing.plaf.synth
SynthComboBoxUI
getMinimumSize(JComponent)	added
SynthLookAndFeel
load(URL)	removed
SynthPasswordFieldUI
installKeyboardActions()	removed
SynthTreeUI
getCollapsedIcon()	added
javax.swing
FocusManager
setCurrentManager(FocusManager)	- throws SecurityException
JApplet.AccessibleJApplet	removed
JApplet	removed
JFileChooser
setEnabled(boolean)	added
JInternalFrame
getWarningString()	+ deprecated + forRemoval
JScrollBar
setMaximumSize(Dimension)	added
setMinimumSize(Dimension)	added
JSplitPane
setComponentOrientation(ComponentOrientation)	added
setEnabled(boolean)	added
RepaintManager
addDirtyRegion(Applet, int, int, int, int)	removed
UIManager
setInstalledLookAndFeels(UIManager.LookAndFeelInfo...	- throws SecurityException
java.logging
java.util.logging
FileHandler
FileHandler()	- throws SecurityException
FileHandler(String)	- throws SecurityException
FileHandler(String, boolean)	- throws SecurityException
FileHandler(String, int, int)	- throws SecurityException
FileHandler(String, int, int, boolean)	- throws SecurityException
close()	- throws SecurityException
Handler
close()	- throws SecurityException
setEncoding(String)	- throws SecurityException
setFilter(Filter)	- throws SecurityException
setFormatter(Formatter)	- throws SecurityException
setLevel(Level)	- throws SecurityException
LogManager
checkAccess()	- throws SecurityException
readConfiguration()	- throws SecurityException
readConfiguration(InputStream)	- throws SecurityException
reset()	- throws SecurityException
Logger
addHandler(Handler)	- throws SecurityException
removeHandler(Handler)	- throws SecurityException
setFilter(Filter)	- throws SecurityException
setLevel(Level)	- throws SecurityException
LoggingPermission	+ deprecated + forRemoval
MemoryHandler
close()	- throws SecurityException
setPushLevel(Level)	- throws SecurityException
SocketHandler
close()	- throws SecurityException
StreamHandler
close()	- throws SecurityException
setEncoding(String)	- throws SecurityException
setOutputStream(OutputStream)	- throws SecurityException
java.management.rmi
javax.management.remote.rmi
RMIConnector
getMBeanServerConnection(Subject)	removed
RMIIIOPServerImpl	removed
java.management
java.lang.management
ManagementPermission	+ deprecated + forRemoval
MemoryMXBean
getTotalGcCpuTime()	added
javax.management.loading
MLetContent	removed
MLet	removed
PrivateMLet	removed
MLetMBean	removed
javax.management.modelmbean
DescriptorSupport
DescriptorSupport(String)	removed
toXMLString()	removed
XMLParseException	removed
javax.management.remote
SubjectDelegationPermission	+ deprecated + forRemoval
JMXConnector
getMBeanServerConnection(Subject)	- abstract + deprecated + forRemoval
javax.management
MBeanPermission	+ deprecated + forRemoval
MBeanServerPermission	+ deprecated + forRemoval
MBeanTrustPermission	+ deprecated + forRemoval
java.naming
javax.naming
Context
APPLET	removed
java.net.http
java.net.http
HttpClient	+ implements AutoCloseable
awaitTermination(Duration)	added
close()	added
isTerminated()	added
shutdown()	added
shutdownNow()	added
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.rmi
java.rmi.server
RMIClassLoader
getClassLoader(String)	- throws SecurityException
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
ED25519	added
ED448	added
SHA3_224_RSA_MGF1	added
SHA3_256_RSA_MGF1	added
SHA3_384_RSA_MGF1	added
SHA3_512_RSA_MGF1	added
java.xml
javax.xml.catalog
CatalogManager
catalogResolver(Catalog,...	added
CatalogResolver.NotFoundAction	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 20.0.2+9-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.