The Java Version Almanac
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New APIs in Java 22

Comparing Java 22 (22-ea+16-1247-open) with Java 20 (20.0.2+9-tem).

Element Modification
java.base
    java.io
      • + sealed
      java.lang.constant
        ConstantDescs
          ClassDesc
            MethodHandleDesc
              MethodTypeDesc
                • + abstract
                java.lang.foreign
                  Arena
                    isCloseableBy(Thread)
                    openConfined()
                    openShared()
                    scope()
                    GroupLayout
                      withBitAlignment(long)
                      Linker.Option.CaptureCallState
                      Linker.Option
                        captureCallState(String...)
                        Linker
                          • + abstract
                          upcallStub(MethodHandle, FunctionDescriptor,...
                          MemoryLayout.PathElement
                            MemoryLayout
                              bitAlignment()
                              bitOffset(MemoryLayout.PathElement...)
                              bitOffsetHandle(MemoryLayout.PathElement...)
                              bitSize()
                              • + abstract
                              valueLayout(Class, ByteOrder)
                              withBitAlignment(long)
                              MemorySegment
                                allocateNative(MemoryLayout, SegmentScope)
                                allocateNative(long, SegmentScope)
                                allocateNative(long, long, SegmentScope)
                                array()
                                • + abstract
                                get(ValueLayout.OfAddress, long)
                                getAtIndex(ValueLayout.OfAddress, long)
                                ofAddress(long, long)
                                ofAddress(long, long, SegmentScope)
                                ofAddress(long, long, SegmentScope, Runnable)
                                scope()
                                set(ValueLayout.OfAddress, long, MemorySegment)
                                setAtIndex(ValueLayout.OfAddress, long,...
                                PaddingLayout
                                  withBitAlignment(long)
                                  SegmentAllocator
                                    allocate(ValueLayout.OfAddress, MemorySegment)
                                    nativeAllocator(SegmentScope)
                                    SegmentScope
                                    SequenceLayout
                                      withBitAlignment(long)
                                      StructLayout
                                        withBitAlignment(long)
                                        SymbolLookup
                                          libraryLookup(Path, SegmentScope)
                                          libraryLookup(String, SegmentScope)
                                          UnionLayout
                                            withBitAlignment(long)
                                            VaList.Builder
                                            VaList
                                            ValueLayout.OfAddress
                                            ValueLayout.OfBoolean
                                              withBitAlignment(long)
                                              ValueLayout.OfByte
                                                withBitAlignment(long)
                                                ValueLayout.OfChar
                                                  withBitAlignment(long)
                                                  ValueLayout.OfDouble
                                                    withBitAlignment(long)
                                                    ValueLayout.OfFloat
                                                      withBitAlignment(long)
                                                      ValueLayout.OfInt
                                                        withBitAlignment(long)
                                                        ValueLayout.OfLong
                                                          withBitAlignment(long)
                                                          ValueLayout.OfShort
                                                            withBitAlignment(long)
                                                            ValueLayout
                                                              withBitAlignment(long)
                                                              java.lang.invoke
                                                                ClassSpecializer.Factory
                                                                ClassSpecializer.SpeciesData
                                                                StringConcatFactory
                                                                  VarHandle
                                                                    • - final
                                                                    java.lang.reflect
                                                                      ClassFileFormatVersion
                                                                        java.lang.runtime
                                                                          • - preview
                                                                          java.lang
                                                                            Character.UnicodeBlock
                                                                              • added
                                                                              Character
                                                                                Class
                                                                                  Compiler
                                                                                  FdLibm.Cbrt
                                                                                  FdLibm.Hypot
                                                                                  FdLibm.Pow
                                                                                  • - preview
                                                                                  Math
                                                                                    StrictMath
                                                                                      • + implements Appendable
                                                                                      • + implements Appendable
                                                                                      String
                                                                                        ThreadGroup
                                                                                          allowThreadSuspension(boolean)
                                                                                          Thread
                                                                                            countStackFrames()
                                                                                            • - preview
                                                                                            • - preview
                                                                                            • - preview
                                                                                            • - preview
                                                                                            StackWalker.Option
                                                                                              • - preview
                                                                                              allowSetThreadLocals(boolean)
                                                                                              • - preview
                                                                                              allowSetThreadLocals(boolean)
                                                                                              • - preview
                                                                                              allowSetThreadLocals(boolean)
                                                                                              java.nio.channels
                                                                                                FileChannel
                                                                                                  map(FileChannel.MapMode, long, long, SegmentScope)
                                                                                                  java.nio.charset
                                                                                                    StandardCharsets
                                                                                                      java.nio.file
                                                                                                        Path
                                                                                                          java.security.cert
                                                                                                            CertStore
                                                                                                              • + final
                                                                                                              java.text
                                                                                                                java.util.concurrent
                                                                                                                  ConcurrentSkipListMap
                                                                                                                    ConcurrentSkipListSet
                                                                                                                      CopyOnWriteArrayList
                                                                                                                        DelayQueue
                                                                                                                          Executors
                                                                                                                            • - preview
                                                                                                                            • - preview
                                                                                                                            java.util.random
                                                                                                                              RandomGenerator
                                                                                                                                java.util.regex
                                                                                                                                  Pattern
                                                                                                                                    java.util
                                                                                                                                      ArrayList
                                                                                                                                        • + final
                                                                                                                                        Collections
                                                                                                                                          • - implements Map
                                                                                                                                          • + implements SequencedMap
                                                                                                                                          • - implements Set
                                                                                                                                          • + implements SequencedSet
                                                                                                                                          LinkedList
                                                                                                                                            Locale
                                                                                                                                              TreeMap
                                                                                                                                                TreeSet
                                                                                                                                                  • + implements SequencedCollection
                                                                                                                                                  • - implements Collection
                                                                                                                                                  • + implements SequencedCollection
                                                                                                                                                  NavigableMap
                                                                                                                                                    NavigableSet
                                                                                                                                                      • - implements Map
                                                                                                                                                      • + implements SequencedMap
                                                                                                                                                      • + implements SequencedSet
                                                                                                                                                      javax.crypto
                                                                                                                                                        javax.net.ssl
                                                                                                                                                          KeyManagerFactory
                                                                                                                                                            • + final
                                                                                                                                                            TrustManagerFactory
                                                                                                                                                              • + final
                                                                                                                                                              java.compiler
                                                                                                                                                                javax.lang.model.element
                                                                                                                                                                  RecordComponentElement
                                                                                                                                                                    TypeElement
                                                                                                                                                                      VariableElement
                                                                                                                                                                        javax.lang.model.util
                                                                                                                                                                          ElementScanner6
                                                                                                                                                                            Elements
                                                                                                                                                                              javax.lang.model
                                                                                                                                                                                SourceVersion
                                                                                                                                                                                  java.desktop
                                                                                                                                                                                    java.awt.peer
                                                                                                                                                                                      WindowPeer
                                                                                                                                                                                        javax.swing.plaf.synth
                                                                                                                                                                                          SynthComboBoxUI
                                                                                                                                                                                            SynthLookAndFeel
                                                                                                                                                                                              • + deprecated
                                                                                                                                                                                              • + forRemoval
                                                                                                                                                                                              javax.swing.text.html
                                                                                                                                                                                                AccessibleHTML.HTMLAccessibleContext
                                                                                                                                                                                                  java.management.rmi
                                                                                                                                                                                                    javax.management.remote.rmi
                                                                                                                                                                                                      RMIIIOPServerImpl
                                                                                                                                                                                                      java.management
                                                                                                                                                                                                        javax.management.remote
                                                                                                                                                                                                          JMXConnector
                                                                                                                                                                                                            • + deprecated
                                                                                                                                                                                                            • + forRemoval
                                                                                                                                                                                                            java.net.http
                                                                                                                                                                                                              java.net.http
                                                                                                                                                                                                                • + implements AutoCloseable
                                                                                                                                                                                                                java.xml.crypto
                                                                                                                                                                                                                  javax.xml.crypto.dsig
                                                                                                                                                                                                                    SignatureMethod

                                                                                                                                                                                                                      This report is based on simple comparison of all public and protected APIs of the java.* and javax.* packages of JDK builds 22-ea+16-1247-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.

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