14

Java 14 Release Notes Documentation

Release Notes

New Features and Enhancements

core-libs

Accounting Currency Format Support

core-libs/java.lang

JEP 359 Records (Preview)

core-libs/java.nio

Clarify the Specification of ReadableByteChannel.read() and Related Methods

hotspot/gc

JEP 365 ZGC on Windows

JEP 364 ZGC on macOS

Parallel GC Improvements

JEP 345 NUMA-Aware Memory Allocation for G1

hotspot/jfr

JEP 349 JFR Event Streaming

JDK Flight Recorder (JFR) now supports continuous monitoring of a Java application by allowing events to be consumed dynamically using a new API located in the jdk.jfr.consumer package

security-libs/java.security

Weak Named Curves in TLS, CertPath, and Signed JAR Disabled by Default

security-libs/javax.xml.crypto

Apache Santuario Library Updated to Version 2.1.4

tools/javac

Allow Discoverable javac Plugins to be Invoked by Default

xml/jaxp

New Method to SAX ContentHandler for Handling XML Declaration

Removed Features and Options

core-libs/java.nio.charsets

Removal of sun.nio.cs.map System Property

deploy

Removal of netscape.javascript.JSObjectgetWindow Method

hotspot/gc

JEP 363 Remove the Concurrent Mark and Sweep (CMS) Garbage Collector

security-libs/java.security

Removed Deprecated java.security.acl APIs

Removal of the Default keytool -keyalg Value

tools/jar

JEP 367 Remove the Pack200 Tools and API

Deprecated Features and Options

core-libs/java.lang

Thread Suspend/Resume Are Deprecated for Removal

The following methods related to thread suspension in java.lang.Thread and java.lang.ThreadGroup have been terminally deprecated in this release:

• Thread.suspend()
• Thread.resume()
• ThreadGroup.suspend()
• ThreadGroup.resume()
• ThreadGroup.allowThreadSuspension(boolean)

These methods will be removed in a future release.

client-libs/javax.swing

Deprecated NSWindowStyleMaskTexturedBackground

hotspot/gc

JEP 366 Deprecate the ParallelScavenge + SerialOld GC Combination

security-libs/javax.crypto

Deprecated the Legacy Elliptic Curves for Removal

Deprecated the OracleUcrypto JCE Provider for Removal

Other notes

client-libs

Text Visibility Issues in macOS Dark Mode

core-libs

Zip File System Throws java.nio.file.NoSuchFileException When the File Does Not Exist and Is Not Being Created

core-libs/java.io:serialization

Better Serial Filter Handling

core-libs/java.lang

Thread Interrupt State Is Always Available

Thread.countStackFrames Changed to Unconditionally Throw UnsupportedOperationException

core-libs/java.lang.invoke

MethodTypefromMethodDescriptorString Requires "getClassLoader" Permission

MethodHandlesprivateLookupIn Requires PRIVATE Lookup Mode

Lookupin Throws IllegalArgumentException If requestedLookupClass Is a Primitive Type or an Array Class

MethodHandlesprivateLookupIn Might Not Produce a Lookup With Full Privilege Access

core-libs/java.net

DatagramSocket.send and MulticastSocket.send Throw IllegalArgumentException When Socket Is Not Connected and Packet Doesn't Contain Address

MulticastSocket getOption(IP_MULTICAST_IF) Returns null when outgoing interface not set

Behavior of MulticastSocket getOption/setOption for IP_MULTICAST_LOOP Conforms With the StandardSocketOptions.IP_MULTICAST_LOOP Specification

InetSocketAddress.toString Format Changes for IPv6 Literals and Unresolved Addresses

core-libs/java.nio

DatagramChannel.disconnect Might Leave the Channel's Socket in an Unspecified State

core-libs/java.rmi

Improve Registry Support

core-libs/java.text

Plural Support in CompactNumberFormat

core-libs/java.util.jar

ZipFileInputStreamskip handling of negative values

core-libs/java.util:i18n

Upgraded CLDR to v36

core-libs/javax.lang.model

ExecutableElement.getReceiverType Changed to Return NOTYPE Rather Than null

core-libs/javax.naming

DnsClient TCP Socket Timeout

core-svc/java.lang.management

OperatingSystemMXBean Methods Inside a Container Return Container Specific Data

When executing in a container, or other virtualized operating environment, the following OperatingSystemMXBean methods in this release return container specific information, if available. Otherwise, they return host specific data:

• getFreePhysicalMemorySize()
• getTotalPhysicalMemorySize()
• getFreeSwapSpaceSize()
• getTotalSwapSpaceSize()
• getSystemCpuLoad()

hotspot/compiler

Turned Off AOT by Default and Changed Related Flags to Experimental

hotspot/gc

Shenandoah self-fixing barriers

Epsilon warns about Xms/Xmx/AlwaysPreTouch configuration

Shenandoah asynchronous object/region pinning

Epsilon does not extend TLABs to max size

Shenandoah supports concurrent class unloading

Shenandoah arraycopy improvements

Shenandoah supports JFR Leak Profiler

hotspot/runtime

Added -XX+AdjustStackSizeForTLS Flag

Detailed Message in NullPointerExceptions

CDS Behavior Change With Non-existent Files During Archive Creation

security-libs/java.security

Exact Match Required for Trusted TLS Server Certificate

New Checks on Trust Anchor Certificates

Added LuxTrust Global Root 2 Certificate

Added 4 Amazon Root CA Certificates

security-libs/javax.crypto

Protected javax.crypto.Cipher Constructor Throws IAE for Non-null Invalid Arguments

SunJCE Provider Throws NoSuchAlgorithmException for AES/GCM/PKCS5Padding

security-libs/javax.net.ssl

Remove Obsolete NIST EC Curves from the Default TLS Algorithms

Removed SSLv2Hello and SSLv3 From Default Enabled TLS Protocols

Stateless Resumption Enabled by Default for JSSE Server

security-libs/javax.security

DelegationPermission Allows Creating an Instance That Thows NPE on equals Call

tools/javac

toString() on Annotation Objects is Consistent Between Core Reflection and javac

xml/javax.xml.transform

Default ErrorListener No Longer Reports Warnings and Errors to the Console