Java Roadmap

jdk19

* JEP 425 Virtual Threads (Preview)

* JEP 428 Structured Concurrency (Incubator)

* JEP 405 Record Patterns (Preview)

* JEP 427 Pattern Matching for switch (Third Preview)

* JEP 424 Foreign Function & Memory API (Preview)

* JEP 426 Vector API (Fourth Incubator)

* Support Unicode 14.0 (JDK-8268081)

* New system properties for System.out and System.err (JDK-8283620)

* HTTPS Channel Binding Support for Java GSS/Kerberos (JDK-8279842)

* Additional Date-Time Formats (JDK-8176706)

* New Methods to Create Preallocated HashMaps and HashSets (JDK-8186958)

* Support for PAC-RET Protection on Linux/AArch64 (JDK-8277204)

* Automatic Generation of the CDS Archive (JDK-8261455)

* Windows KeyStore Updated to Include Access to the Local Machine Location (JDK-6782021)

* Break Up SEQUENCE in X509Certificate::getSubjectAlternativeNames and X509Certificate::getIssuerAlternativeNames in otherName (JDK-8277976)

* (D)TLS Signature Schemes (JDK-8280494)

* Add a -providerPath Option to jarsigner (JDK-8281175)

* New Options for ktab to Provide Non-default Salt (JDK-8279064)

* New XML Processing Limits (JDK-8270504 (not public))

* Removal of Diagnostic Flag GCParallelVerificationEnabled (JDK-8286304)

* Remove Finalizer Implementation in SSLSocketImpl (JDK-8212136)

* Remove the Alternate ThreadLocal Implementation of the Subject::current and Subject::callAs APIs (JDK-8282676 (not public))

* java.lang.ThreadGroup Is Degraded (JDK-8284161)

* Deprecation of Locale Class Constructors (JDK-8282819)

* PSSParameterSpec(int) Constructor and DEFAULT Static Constant Are Deprecated (JDK-8254935)

* OAEPParameterSpec.DEFAULT Static Constant Is Deprecated (JDK-8284553)

* Metal Is Now the Default Java 2D Rendering Pipeline on macOS (JDK-8284378)

* New System Property to Disable Windows Alternate Data Stream Support in java.io.File (JDK-8285445)

* User's Home Directory Is Set to $HOME if Invalid (JDK-8280357)

* Thread Context ClassLoader Changed to be a Special Inheritable Thread-local (JDK-8284161)

* Source and Binary Incompatible Changes to java.lang.Thread (JDK-8284161)

* Incorrect Handling of Quoted Arguments in ProcessBuilder (JDK-8282008)

* Double.toString(double) and Float.toString(float) May Return Slightly Different Results (JDK-4511638)

* Make Annotation toString Output for Enum Constants Usable for Source Input (JDK-8281462)

* MD5 and SHA-1 Are Disabled by Default for HTTP Digest Authentication (JDK-8281561)

* Improved HTTP Proxy Detection on Windows (JDK-8262442)

* java.net.InetAddress Updated to Reject Ambiguous IPv4 Address Literals (JDK-8277608 (not public))

* Make HttpURLConnection Default Keep Alive Timeout Configurable (JDK-8278067)

* FileChannel.transferFrom May Transfer Fewer Bytes than Expected (JDK-8286763)

* The mark and set Methods of InputStream and FilterInputStream Are No Longer Synchronized (JDK-8284930)

* Files.copy Copies POSIX Attributes to Target on Foreign File System (JDK-8267820)

* FileChannel.lock/tryLock Changed to Treat Size 0 to Mean the Locked Region Goes to End of File (JDK-5041655)

* java.time.DateTimeFormatter: Wrong Definition of Symbol F (JDK-8282081)

* Support for IsoFields in JapaneseDate/MinguoDate/ThaiBuddhistDate (JDK-8279185)

* ForkJoinPool and ThreadPoolExecutor Do Not Use Thread::start to Start Worker Threads (JDK-8284161)

* InflaterInputStream.read Throws EOFException (JDK-8292327)

* Regex \b Character Class Now Matches ASCII Characters only by Default (JDK-8264160)

* Support for CLDR Version 41 (JDK-8265315)

* Parsing of URL Strings in Built-in JNDI Providers Is More Strict (JDK-8278972 (not public))

* jstatd No Longer Requires a SecurityManager (JDK-8272317)

* JVM TI Changes to Support Virtual Threads (JDK-8284161)

* JNI GetVersion Returns JNI_VERSION_19 (JDK-8286176)

* CPU Shares Ignored When Computing Active Processor Count (JDK-8281181)

* RPM JDK Installer Changes (JDK-8275446)

* All JDK Update Releases Are Installed into the Same Directory on macOS (JDK-8281010)

* JDK-8278370: [win] Disable Side-by-Side Installations of Multiple JDK Updates in Windows JDK Installers (JDK-8278370)

* Only Expose Certificates With Proper Trust Settings as Trusted Certificate Entries in macOS KeychainStore (JDK-8278449 (not public))

* RC2 and ARCFOUR Algorithms Added to jdk.security.legacyAlgorithms Security Property (JDK-8286090)

* Use Larger Default Key Sizes if not Explicitly Specified (JDK-8267319)

* getParameters of ECDSA Signature Objects Always Return Null (JDK-8286908)

* DES, DESede, and MD5 Algorithms Added to jdk.security.legacyAlgorithms Security Property (JDK-8255552)

* Fully Support Endpoint Identification Algorithm in RFC 6125 (JDK-7192189)

* TLS Cipher Suites using 3DES Removed from the Default Enabled List (JDK-8163327)

* Indy String Concat Changes Order of Operations (JDK-8273914)

* Lambda Deserialization Fails for Object Method References on Interfaces (JDK-8282080)

* JavaDoc Search Enhancements (JDK-8248863)

* Allow Per-User and System Wide Configuration of a jpackaged App (JDK-8250950)

* JShell Highlights Deprecated Elements, Variables, and Keywords (JDK-8274148)

* -Xss May Be Rounded up to a Multiple of the System Page Size (JDK-8236569)

* Use Larger Default key Sizes if not Explicitly Specified (JDK-8267319)

jdk17

jdk16

* JEP 389: Foreign Linker API (Incubator)

* JEP 396: Strongly Encapsulate JDK Internals by Default

* JEP 393: Foreign-Memory Access API (Third Incubator

* JEP 390: Warnings for Value-based Classes

* Add InvocationHandler::invokeDefault Method for Proxy's Default Method Support

* JEP 380: Unix domain sockets

* Day Period Support Added to java.time Formats

* Add Stream.toList() Method

* JEP 338: Vector API (Incubator)

* Improved CompileCommand Flag

* JEP 376: ZGC Concurrent Stack Processing

* Concurrently Uncommit Memory in G1

* New jdk.ObjectAllocationSample Event Enabled by Default

* JEP 387: Elastic Metaspace

* Signed JAR Support for RSASSA-PSS and EdDSA

* SUN, SunRsaSign, and SunEC Providers Supports SHA-3 Based Signature Algorithms

* jarsigner Preserves POSIX File Permission and symlink Attributes

* Added -trustcacerts and -keystore Options to keytool -printcert and -printcrl Commands

* SunPKCS11 Provider Supports SHA-3 Related Algorithms

* Improve Certificate Chain Handling

* Improve Encoding of TLS Application-Layer Protocol Negotiation (ALPN) Values

* TLS Support for the EdDSA Signature Algorithm

* JEP 397: Sealed Classes (Second Preview)

* JEP 395: Records

* JEP 394: Pattern Matching for instanceof

* JEP 392: Packaging Tool

* Removal of java.awt.PeerFixer

* Removal of Experimental Features AOT and Graal JIT

* Deprecated Tracing Flags Are Obsolete and Must Be Replaced With Unified Logging Equivalents

* Removed Root Certificates with 1024-bit Keys

* Removal of Legacy Elliptic Curves

* Terminally Deprecated ThreadGroup stop, destroy, isDestroyed, setDaemon and isDaemon

* Parts of the Signal-Chaining API Are Deprecated

* Deprecated the java.security.cert APIs That Represent DNs as Principal or String Objects

* Line Terminator Definition Changed in java.io.LineNumberReader

* Enhanced Support of Proxy Class

* Module::getPackages Returns the Set of Package Names in This Module

* Support Supplementary Characters in String Case Insensitive Operations

* Proxy Classes Are Not Open for Reflective Access

* The Default HttpClient Implementation Returns Cancelable Futures

* HttpPrincipal::getName Returned Incorrect Name

* HttpClient.newHttpClient and HttpClient.Builder.build Might Throw UncheckedIOException

* NullPointerException Not Thrown When First Argument to Path.of or Paths.get Is null

* Incomplete Support for Unix Domain Sockets in Windows 2019 Server

* US/Pacific-New Zone Name Removed as Part of tzdata2020b

* Argument Index of Zero or Unrepresentable by int Throws IllegalFormatException.

* GZIPOutputStream Sets the GZIP OS Header Field to the Correct Default Value

* Refine ZipOutputStream.putNextEntry() to Recalculate ZipEntry's Compressed Size

* java.util.logging.LogRecord Updated to Support Long Thread IDs

* TreeMap.computeIfAbsent Mishandles Existing Entries Whose Values Are null

* Support for CLDR Version 38

* Added Property to Control LDAP Authentication Mechanisms Allowed to Authenticate Over Clear Connections

* LDAP Channel Binding Support for Java GSS/Kerberos

* Make JVMTI Table Concurrent

* IncompatibleClassChangeError Exceptions Are Thrown For Failing 'final' Checks When Defining a Class

* Object Monitors No Longer Keep Strong References to Their Associated Object

* Added 3 SSL Corporation Root CA Certificates

* Added Entrust Root Certification Authority - G4 certificate

* Upgraded the Default PKCS12 Encryption and MAC Algorithms

* Disable TLS 1.0 and 1.1

* C-Style Array Declarations Are Not Allowed in Record Components

* Annotation Interfaces May Not Be Declared As Local Interfaces

* DocLint Support Moved to jdk.javadoc Module

* Eliminating Duplication in Simple Documentation Comments

* Viewing API Documentation on Small Devices

* API Documentation Links to Platform Documentation

* Improvements for JavaDoc Search

jdk15

* Unicode support to 13.0

* Hidden Classes

* Added Support for SO_INCOMING_NAPI_ID Support

* Specialized Implementations of TreeMap Methods

* Added Ability to Configure Third Port for Remote JMX

* New Option Added to jstatd for Specifying RMI Connector Port Number

* New Option Added to jcmd for Writing a gzipped Heap Dump

* Text Blocks

* New Options Added to jhsdb for debugd Mode

* Oracle JDK Installer for Windows Provides Executables (javac, etc) in a Path Reachable From Any Command Prompt

* Added Revocation Checking to jarsigner

* Tools Warn If Weak Algorithms Are Used Before Restricting Them

* SunJCE Provider Supports SHA-3 Based Hmac Algorithms

* New System Properties to Configure the TLS Signature Schemes

* Support for certificate_authorities Extension

* Support for canonicalize in krb5.conf

* Removal of Terminally Deprecated Solaris-specific SO_FLOW_SLA Socket Option

* Removal of RMI Static Stub Compiler (rmic)

* Removal of Deprecated Constant RMIConnectorServer.CREDENTIAL_TYPES

* Removal of Nashorn JavaScript Engine

* Obsolete -XXUseAdaptiveGCBoundary

* Removal of Comodo Root CA Certificate

* Removal of DocuSign Root CA Certificate

* Retired the Deprecated SSLSession.getPeerCertificateChain() Method Implementation

* Removal of com.sun.net.ssl.internal.ssl.Provider Name

* Deprecated RMI Activation for Removal

* Deprecated NSWindowStyleMaskTexturedBackground

* Deprecated -XXForceNUMA Option

* Disabled Biased-locking and Deprecated Biased-locking Flags

* Disabled Native SunEC Implementation by Default

* Added forRemoval=true to Previously Deprecated ContentSigner APIs

* Workaround for Windows GDI API's memory restrictions

* java.awt.Robot.delay() Method Completes With Interrupt Status Set When Interrupted

* Improved Serialization Handling

* Optimized Empty Substring Handling

* LookupdefineClass Links the Class

* DatagramSocketdisconnect Allows an Implementation to Throw UncheckedIOException

* java.net.HttpClient Does Not Override Protocols Specified in SSLContext Default Parameters

* Filtering and Ordering of Addresses Returned by Alternative Hosts File Name Service Provider

* DatagramPacket.getPort() Returns 0 When the Port Is Not Set

* Modified the MS950 charset Encoder's Conversion Table

* Support Monetary Grouping Separator in DecimalFormat/DecimalFormatSymbols

* localizedBy() Overrides Localized Values With Default Values

* ValueRange.of(long, long, long) Does Not Throw IAE on Invalid Inputs

* Performance Improvement for InflaterOutputStream.write

* Case Insensitive Matching Doesn't Work Correctly for Some Character Classes

* Better Listing of Arrays

* Support for CLDR version 37

* Localized Time Zone Name Inconsistency Between English and Other Locales

* [macos] Support for Notarizing jpackage app-image and dmg

* Flags Controlling C1 Inlining Have New Names

* Improved Ergonomics for G1 Heap Region Size

* ZGC A Scalable Low-Latency Garbage Collector (Production)

* Disabling large pages on Windows

* Disabling NUMA Interleaving on Windows

* Field Layout Computation Changed

* Enable ShowCodeDetailsInExceptionMessages by default

* Signature and SignatureSpi Get Parameter Methods May Return null When Unsupported

* SunPKCS11 Initialization With NSS When External FIPS Modules Are in Security Modules Database

* Default SSLEngine Should Create in Server Role

* Pattern Matching for instanceof (Second Preview)

* Standard Doclet Index Files Compression

jdk14
* JDK Flight Recorder event streaming provides an API for the continuous consumption of JFR data from both in-process and out-of-process applications.
* The planned improvement to NullPointerExceptions pertains to improving the usability of the exceptions generated by the JVM by describing exactly which variable was null.
* Non-volatile mapped byte buffers would add new JDK-specific file mapping modes that allow the FileChannel API to be used to create MappedByteBuffer instances that refer to non-volatile memory (NVM).
* Enhance the language with pattern matching for the instanceof operator. This would be a preview feature in JDK 14.
* Switch expressions simplify coding by extending switch so that it can be used as either a statement or an expression.
* NUMA-aware memory allocation for the G1 garbage collector, intended to improve G1 performance on large machines.
* Removal of the Concurrent Mark Sweep (CMS) garbage collector, which previously was deprecated and slated for removal. Successors to CMS have arisen including ZGC and Shenandoah.
* Porting of ZGC to MacOS. It has been supported only on Linux thus far.
* Removal of the pack200 and unpack200 tools and the Pack200 API in the java.util.jar package.
* Records https://openjdk.java.net/jeps/359
* Deprecating the combination of the Parallel Scavenge and Serial Old garbage collection algorithms.
* Porting of the ZGC (Z Garbage Collector) to Windows.
* Foreign-memory access API, with the introduction of an API for Java programs to safely and efficiently access foreign memory outside of the Java heap.
* Deprecation of the Solaris/Sparc, Solaris/x64, and Linux/Sparc ports, with the intent to remove them in a future release.



jdk13
* text block
* a reimplementation of the legacy socket API
* switch expressions
* enhancements to the ZGC (Z Garbage Collector)
* extending application class-data sharing (AppCDS) to enable dynamic archiving of classes at the end of application execution.

jdk 12
* switch expressions
* https://openjdk.java.net/projects/jdk/12/


jdk 11
* lts
* dynamic class file constants
* converged binaries, oracle jdk & open jdk
* opensource flight recorder
* opensource mission control
* browser plugin removed
* java web start removed
* javafx removed from jdk and replace as a lib

javafx.* [8-10]
javafx.css [9-10]
javafx.css.converter [9-10]
javafx.fxml [9-10]
javafx.scene [9-10]
javafx.util [9-10]

* epsilon garbage collector
* improve aarch64 intrinsics
* low overhead heap profiling
* http client
   The Standard HTTP Client has been moved from jdk.incubator.http to java.net.http:

    java.net.http.HttpClient

java.net.http.HttpClient$Builder
java.net.http.HttpClient$Redirect
java.net.http.HttpClient$Version
java.net.http.HttpConnectTimeoutException
java.net.http.HttpHeaders
java.net.http.HttpRequest
java.net.http.HttpRequest$BodyPublisher
java.net.http.HttpRequest$BodyPublishers
java.net.http.HttpRequest$Builder
java.net.http.HttpResponse
java.net.http.HttpResponse$BodyHandler
java.net.http.HttpResponse$BodyHandlers
java.net.http.HttpResponse$BodySubscriber
java.net.http.HttpResponse$BodySubscribers
java.net.http.HttpResponse$PushPromiseHandler
java.net.http.HttpResponse$ResponseInfo
java.net.http.HttpTimeoutException
java.net.http.WebSocket
java.net.http.WebSocket$Builder
java.net.http.WebSocket$Listener
java.net.http.WebSocketHandshakeException

* extend local-variable syntax
* unicode 10 support
* launch single file source code
* shebang
* transport layer security tls 1.3
* zgc
* deprecate nashorn javascript engine
* key agreement with curve25519 and curve448
   JEP 324: Key Agreement with Curve25519 and Curve448 comes with a few classes,

java.security.interfaces.XECKey
java.security.interfaces.XECPrivateKey
java.security.interfaces.XECPublicKey
java.security.spec.NamedParameterSpec
java.security.spec.XECPrivateKeySpec
java.security.spec.XECPublicKeySpec

* chacha20 and poly1305 cryptographic algorithms
* optional.isEmpty()
* character.toString(int)
* String, isBlank(), lines(), repeat(int), strip(), stripLeading(), stripTrailing()
* predicate not
* java ee and corba module are dropped

javax.activation [6-10]
javax.activity [5-10]
javax.annotation [6-10]
javax.jnlp [5-10]
javax.jws [6-10]
javax.rmi.CORBA [3-10]
javax.security.auth.Policy [4-10]
javax.transaction [3-10]
javax.xml.bind [6-10]
javax.xml.soap [6-10]
javax.xml.ws [6-10]
jdk.management.cmm.SystemResourcePressureMXBean [8-10]
jdk.management.resource [8-10]
jdk.packager.services.singleton [only 10]
jdk.packager.services.userjvmoptions [9-10]
org.omg.CORBA [2-10]

*

jdk 10
* local variable type inference
* parallel full gc for g1
* application class data sharing
* experimental java based jit compiler (graal)
* root certificates
* consolidate jdk forests into single repo
* heap allocation on alternative devices (intel)
* remove javah tool
* garbage collector interface (red hat)
* thread local handshakes
* list, set, map.copyOf(collection)
* collectors, toUnmodifiableList, toUnmodifiableMap, toUnmodifiableSet
* Optional.orElseThrow()
* jvm now more docker container aware
*


jdk 9
* Java Platform Module System
* Java flow API

jdk 8
* lts
* lambda