The Java Version Almanac
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New APIs in Java 23

Comparing Java 23 (23-ea+28-2286-open) with Java 21 (21.0.3+9-LTS-tem).

Element Modification
java.base
    java.io
      Console
        ObjectOutputStream.PutField
          • + forRemoval
          java.lang.foreign
            • - preview
            • - preview
            • + abstract
            • - preview
            • - preview
            • - preview
            isTrivial()
            • - preview
            • - preview
            • - preview
            • + abstract
            • + abstract
            • + abstract
            sequenceLayout(MemoryLayout)
            • + abstract
            • + abstract
            • - preview
            • - preview
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            getUtf8String(long)
            • + abstract
            segmentOffset(MemorySegment)
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            • + abstract
            setUtf8String(long, String)
            • - preview
            • - preview
            allocate(AddressLayout, MemorySegment)
            allocate(ValueLayout.OfByte, byte)
            allocate(ValueLayout.OfChar, char)
            allocate(ValueLayout.OfDouble, double)
            allocate(ValueLayout.OfFloat, float)
            allocate(ValueLayout.OfInt, int)
            allocate(ValueLayout.OfLong, long)
            allocate(ValueLayout.OfShort, short)
            allocateArray(MemoryLayout, long)
            allocateArray(ValueLayout.OfByte, byte...)
            allocateArray(ValueLayout.OfChar, char...)
            allocateArray(ValueLayout.OfDouble, double...)
            allocateArray(ValueLayout.OfFloat, float...)
            allocateArray(ValueLayout.OfInt, int...)
            allocateArray(ValueLayout.OfLong, long...)
            allocateArray(ValueLayout.OfShort, short...)
            allocateUtf8String(String)
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            • - preview
            arrayElementVarHandle(int...)
            java.lang.invoke
              MethodHandles
                • - preview
                • - preview
                • - preview
                • - preview
                • - preview
                memorySegmentViewVarHandle(ValueLayout)
                • - preview
                StringConcatFactory
                  MAX_INDY_CONCAT_ARG_SLOTS
                  makeConcatWithTemplate(List, List)
                  makeConcatWithTemplateCluster(List, List, int)
                  makeConcatWithTemplateGetters(List, List, int)
                  java.lang.reflect
                    ClassFileFormatVersion
                      java.lang.runtime
                        TemplateRuntime
                        java.lang
                          Character.UnicodeBlock
                            Class
                              isUnnamedClass()
                              ModuleLayer.Controller
                                • - preview
                                Module
                                  • - preview
                                  ScopedValue.Carrier
                                    call(Callable)
                                    get(Supplier)
                                    ScopedValue
                                      callWhere(ScopedValue, Object, Callable)
                                      getWhere(ScopedValue, Object, Supplier)
                                      ThreadGroup
                                        resume()
                                        stop()
                                        suspend()
                                        Thread
                                          countStackFrames()
                                          resume()
                                          suspend()
                                          StackWalker.Option
                                            StringTemplate.Processor.Linkage
                                            StringTemplate.Processor
                                            StringTemplate
                                            java.net
                                              DatagramSocketImpl
                                                • + forRemoval
                                                • + forRemoval
                                                Inet4Address
                                                  Inet6Address
                                                    InetAddress
                                                      MulticastSocket
                                                        • + forRemoval
                                                        • + forRemoval
                                                        • + forRemoval
                                                        Socket
                                                          • + forRemoval
                                                          • + forRemoval
                                                          java.nio.channels
                                                            FileChannel
                                                              • - preview
                                                              java.nio.charset
                                                                StandardCharsets
                                                                  java.nio.file
                                                                    Path
                                                                      java.security.interfaces
                                                                        • + implements AlgorithmParameterSpec
                                                                        DSAPrivateKey
                                                                          DSAPublicKey
                                                                            ECPrivateKey
                                                                              ECPublicKey
                                                                                EdECPrivateKey
                                                                                  EdECPublicKey
                                                                                    RSAPrivateKey
                                                                                      RSAPublicKey
                                                                                        XECPrivateKey
                                                                                          XECPublicKey
                                                                                            java.security
                                                                                              • - implements Key
                                                                                              • + implements AsymmetricKey
                                                                                              • - implements Key
                                                                                              • + implements AsymmetricKey
                                                                                              java.text
                                                                                                ChoiceFormat
                                                                                                  CompactNumberFormat
                                                                                                    DecimalFormat
                                                                                                      MessageFormat
                                                                                                        NumberFormat
                                                                                                          SimpleDateFormat
                                                                                                            java.time
                                                                                                              Instant
                                                                                                                java.util.concurrent
                                                                                                                  ForkJoinPool
                                                                                                                    • + throws InterruptedException
                                                                                                                    ForkJoinTask
                                                                                                                      java.util.random
                                                                                                                        RandomGenerator
                                                                                                                          java.util.stream
                                                                                                                            Stream
                                                                                                                              java.util.zip
                                                                                                                                Deflater
                                                                                                                                  • + deprecated
                                                                                                                                  • + deprecated
                                                                                                                                  Inflater
                                                                                                                                    • + deprecated
                                                                                                                                    • + deprecated
                                                                                                                                    ZipFile
                                                                                                                                      java.util
                                                                                                                                        FormatProcessor
                                                                                                                                        javax.crypto.interfaces
                                                                                                                                          DHPrivateKey
                                                                                                                                            DHPublicKey
                                                                                                                                              java.compiler
                                                                                                                                                javax.lang.model.element
                                                                                                                                                  RecordComponentElement
                                                                                                                                                    TypeElement
                                                                                                                                                      isUnnamed()
                                                                                                                                                      VariableElement
                                                                                                                                                        • - preview
                                                                                                                                                        javax.lang.model.util
                                                                                                                                                          ElementScanner6
                                                                                                                                                            Elements
                                                                                                                                                              Types
                                                                                                                                                                javax.lang.model
                                                                                                                                                                  SourceVersion
                                                                                                                                                                    javax.tools
                                                                                                                                                                      SimpleJavaFileObject
                                                                                                                                                                        java.desktop
                                                                                                                                                                          java.awt.peer
                                                                                                                                                                            WindowPeer
                                                                                                                                                                              java.beans.beancontext
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                • + deprecated
                                                                                                                                                                                • + forRemoval
                                                                                                                                                                                java.beans
                                                                                                                                                                                  Beans
                                                                                                                                                                                    • + deprecated
                                                                                                                                                                                    • + forRemoval
                                                                                                                                                                                    javax.print.attribute.standard
                                                                                                                                                                                      javax.swing.plaf.synth
                                                                                                                                                                                        SynthTreeUI
                                                                                                                                                                                          javax.swing
                                                                                                                                                                                            JFileChooser
                                                                                                                                                                                              JScrollBar
                                                                                                                                                                                                java.management.rmi
                                                                                                                                                                                                  javax.management.remote.rmi
                                                                                                                                                                                                    RMIConnector
                                                                                                                                                                                                      getMBeanServerConnection(Subject)
                                                                                                                                                                                                      java.management
                                                                                                                                                                                                        javax.management.loading
                                                                                                                                                                                                          MLetContent
                                                                                                                                                                                                          MLet
                                                                                                                                                                                                          PrivateMLet
                                                                                                                                                                                                          MLetMBean
                                                                                                                                                                                                          javax.management.remote
                                                                                                                                                                                                            JMXConnector
                                                                                                                                                                                                              • - abstract
                                                                                                                                                                                                              java.xml.crypto
                                                                                                                                                                                                                javax.xml.crypto.dsig
                                                                                                                                                                                                                  SignatureMethod
                                                                                                                                                                                                                    java.xml
                                                                                                                                                                                                                      javax.xml.catalog
                                                                                                                                                                                                                        CatalogManager
                                                                                                                                                                                                                          GroupEntry.ResolveType

                                                                                                                                                                                                                          This report is based on simple comparison of all public and protected APIs of the java.* and javax.* packages of JDK builds 23-ea+28-2286-open and 21.0.3+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.