New APIs in Java 27

Comparing Java 27 (27-ea+24-2138-open) with Java 26 (26.0.1+8-tem).

Element	Modification
java.base
java.lang.classfile.instruction
IncrementInstruction
of(Opcode, int, int)	added
java.lang.classfile
ClassFile
JAVA_27_VERSION	added
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
Executable
toGenericString()	- abstract
Modifier
classModifiers()	+ deprecated
constructorModifiers()	+ deprecated
fieldModifiers()	+ deprecated
interfaceModifiers()	+ deprecated
methodModifiers()	+ deprecated
parameterModifiers()	+ deprecated
toString(int)	+ deprecated
ClassFileFormatVersion
RELEASE_27	added
java.lang
Math
acosh(double)	added
asinh(double)	added
atanh(double)	added
StrictMath
acosh(double)	added
asinh(double)	added
atanh(double)	added
String
encodedLength(Charset)	added
LazyConstant
isInitialized()	removed preview
orElse(Object)	removed preview
java.math
BigDecimal
rootn(int, MathContext)	added
java.security
KeyStoreSpi
engineGetCreationInstant(String)	added
KeyStore
getCreationInstant(String)	added
java.time.format
DateTimeFormatterPatternProvider	added
java.util.concurrent
StructuredTaskScope.CancelledByTimeoutException	added preview
StructuredTaskScope.FailedException	removed preview
StructuredTaskScope.TimeoutException	removed preview
ThreadPoolExecutor
finalize()	removed
StructuredTaskScope.Joiner
allSuccessfulOrThrow(Function)	added preview
anySuccessfulOrThrow(Function)	added preview
awaitAll()	removed preview
awaitAllSuccessfulOrThrow(Function)	added preview
onTimeout()	removed preview
timeout()	added preview
StructuredTaskScope
join()	+ throws Throwable
open(UnaryOperator)	added preview
java.util
EnumSet
spliterator()	added
Locale
getDisplayCountry()	- final
getDisplayLanguage()	- final
getDisplayName()	- final
getDisplayVariant()	- final
Set
ofLazy(Set, Predicate)	added preview
java.compiler
javax.lang.model
SourceVersion
RELEASE_27	added
java.desktop
java.awt.geom
Arc2D
getBounds()	added
javax.swing
JEditorPane.JEditorPaneAccessibleHypertextSupport
changedUpdate(DocumentEvent)	added
insertUpdate(DocumentEvent)	added
removeUpdate(DocumentEvent)	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+24-2138-open and 26.0.1+8-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.