New APIs in Java 10

Comparing Java 10 (10.0.2-open) with Java 9 (9.0.4-open).

Element	Modification
java.base
java.io
ByteArrayOutputStream
toString(Charset)	added
FileInputStream
finalize()	+ forRemoval
FileOutputStream
finalize()	+ forRemoval
PrintStream
PrintStream(File, Charset)	added
PrintStream(OutputStream, boolean, Charset)	added
PrintStream(String, Charset)	added
PrintWriter
PrintWriter(File, Charset)	added
PrintWriter(OutputStream, boolean, Charset)	added
PrintWriter(String, Charset)	added
Reader
transferTo(Writer)	added
java.lang.invoke
ClassSpecializer.Factory	added
ClassSpecializer.SpeciesData	added
MethodType
lastParameterType()	added
java.lang.reflect
MalformedParameterizedTypeException
MalformedParameterizedTypeException(String)	added
java.lang
FdLibm.Cbrt
Cbrt()	removed
FdLibm.Hypot
Hypot()	removed
FdLibm.Pow
Pow()	removed
Runtime.Version
feature()	added
interim()	added
major()	+ deprecated
minor()	+ deprecated
patch()	added
security()	+ deprecated
update()	added
Runtime
getLocalizedInputStream(InputStream)	removed
getLocalizedOutputStream(OutputStream)	removed
SecurityManager
inCheck	removed
classDepth(String)	removed
classLoaderDepth()	removed
currentClassLoader()	removed
currentLoadedClass()	removed
getInCheck()	removed
inClass(String)	removed
inClassLoader()	removed
StackWalker.StackFrame
getDescriptor()	added
getMethodType()	added
java.net
URLDecoder
decode(String, Charset)	added
URLEncoder
encode(String, Charset)	added
java.nio.channels
Channels
newReader(ReadableByteChannel, Charset)	added
newWriter(WritableByteChannel, Charset)	added
java.nio.file
FileStore
getBlockSize()	added
java.security.acl
AclNotFoundException	+ forRemoval
LastOwnerException	+ forRemoval
NotOwnerException	+ forRemoval
AclEntry	+ forRemoval
Acl	+ forRemoval
Group	+ forRemoval
Owner	+ forRemoval
Permission	+ forRemoval
java.security
IdentityScope	+ forRemoval
Identity	+ forRemoval
Signer	+ forRemoval
Certificate	+ forRemoval
java.time.chrono
HijrahEra
getDisplayName(TextStyle, Locale)	added
MinguoEra
getDisplayName(TextStyle, Locale)	added
ThaiBuddhistEra
getDisplayName(TextStyle, Locale)	added
java.time.format
DateTimeFormatter
localizedBy(Locale)	added
java.util.concurrent.locks
StampedLock
isLockStamp(long)	added
isOptimisticReadStamp(long)	added
isReadLockStamp(long)	added
isWriteLockStamp(long)	added
java.util.concurrent
FutureTask
toString()	added
java.util.jar
JarEntry
getRealName()	added
JarFile
versionedStream()	added
java.util.spi
LocaleNameProvider
getDisplayUnicodeExtensionKey(String, Locale)	added
getDisplayUnicodeExtensionType(String, String,...	added
java.util.stream
Collectors
toUnmodifiableList()	added
toUnmodifiableMap(Function, Function)	added
toUnmodifiableMap(Function, Function,...	added
toUnmodifiableSet()	added
java.util.zip
Deflater
finalize()	+ forRemoval
Inflater
finalize()	+ forRemoval
ZipFile
finalize()	+ forRemoval
java.util
DoubleSummaryStatistics
DoubleSummaryStatistics(long, double, double,...	added
Formatter
Formatter(File, Charset, Locale)	added
Formatter(OutputStream, Charset, Locale)	added
Formatter(String, Charset, Locale)	added
IntSummaryStatistics
IntSummaryStatistics(long, int, int, long)	added
LongSummaryStatistics
LongSummaryStatistics(long, long, long, long)	added
OptionalDouble
orElseThrow()	added
OptionalInt
orElseThrow()	added
OptionalLong
orElseThrow()	added
Optional
orElseThrow()	added
Properties
Properties(int)	added
storeToXML(OutputStream, String, Charset)	added
Scanner
Scanner(File, Charset)	added
Scanner(InputStream, Charset)	added
Scanner(Path, Charset)	added
Scanner(ReadableByteChannel, Charset)	added
SplittableRandom
nextBytes(byte[])	added
List
copyOf(Collection)	added
Map
copyOf(Map)	added
Set
copyOf(Collection)	added
javax.security.auth
Policy	+ forRemoval
java.compiler
javax.lang.model.util
TypeKindVisitor6
visitNoTypeAsModule(NoType, Object)	added
TypeKindVisitor9
visitNoTypeAsModule(NoType, Object)	added
javax.lang.model
SourceVersion
RELEASE_10	added
java.desktop
java.awt.geom
Path2D.Double
trimToSize()	added
Path2D.Float
trimToSize()	added
Path2D
trimToSize()	added
java.awt
Toolkit
getMenuShortcutKeyMask()	+ deprecated
getMenuShortcutKeyMaskEx()	added
javax.swing.plaf.basic
BasicMenuUI
getMinimumSize(JComponent)	added
javax.swing
ButtonModel
getGroup()	added
java.management.rmi
javax.management.remote.rmi
RMIConnectorServer
CREDENTIALS_FILTER_PATTERN	added
CREDENTIAL_TYPES	+ deprecated + forRemoval
SERIAL_FILTER_PATTERN	added
java.management
java.lang.management
RuntimeMXBean
getPid()	added
ThreadMXBean
dumpAllThreads(boolean, boolean, int)	added
getThreadInfo(long[], boolean, boolean, int)	added
java.xml
javax.xml.stream
XMLInputFactory
newFactory()	- deprecated

Data Source

This report is based on simple comparison of all public and protected APIs of the java.* and javax.* packages of JDK builds 10.0.2-open and 9.0.4-open. 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.

More detailed API comparisons based on the japicmp tool can be found here.