Liberica JDK 14.0.1 Release Notes

The full version string for this update release is 14.0.1+8. The version number is 14.

Liberica JDK 14.0.1+8

Liberica is a certified, Java SE 14-compliant distribution of OpenJDK 14 which works on server (Linux x86_64, Linux ARM64, Solaris SPARC, Solaris x64, Windows 64), desktop (Windows 64, Windows 32, Mac, Linux x86_64), and embedded devices (Linux ARM64, Linux ARMv7, including Raspberry Pi 2, 3, 4 (ARMv6 hardfloat)). It has the following notable additions:

  • Linux x86_64 version contains experimental support for ZGC.
  • Linux x86_64, ARMv8 and ARMv7 distributions include a choice of Client VM, Server VM and Minimal VM.
  • Alpine Linux x86_64 version is build with musl support.
  • Windows x86_64, Windows x86, Mac, Linux x86_64, Linux x86 and Linux ARMv7 distributions contain OpenJFX 14.
  • Linux ARMv7 distribution contains Device IO API compiled for Raspberry Pi.

Please refer to the Oracle JDK 14.0.1 release notes for further information on JDK 14.0.1 features. This document further outlines the peculiarities of Liberica distribution as compared to Oracle JDK 14.0.1 distribution.

Supported Server and Desktop configurations

Liberica is supported on the following OSes:

  • Ubuntu Linux 16.04, 18.04 (x86, x86_64, ARMv8)
  • Debian Linux 8, 9 (x86, x86_64, ARMv8)
  • Red Hat, Oracle Linux and CentOS 6.x, 7.x (x86, x86_64, ARMv8)
  • Alpine Linux 3.7+
  • SUSE Linux Enterprise 12, 15 and tumbleweed (x86_64, ARMv8)
  • Apple macOS 10.11+
  • Microsoft Windows 2019, Windows 2016, Windows 2012 R2, Windows 10, Windows 8, Windows 7 (64 and 32 bit)

It is also known to work on other Linux distributions and Windows versions.

Note: The minimum supported Linux kernel version is 2.6.18 and GLIBC version 2.6. LibericaFX works on all supported Ubuntu versions, Red Hat Linux family starting from 7.x and SUSE versions with GTK3 backend.

Supported Embedded configurations

Liberica is tested and certified on Raspberry Pi 2, 3 and 4 running the following OSes:

  • Raspbian OS (armhf)
  • OpenSUSE (armv8)

It is also known to work with Debian (armhf) and Ubuntu (armhf).

Liberica JDK 14.0.1 distribution

Liberica JDK 14.0.1 are distributed as .rpm, .zip, .deb and .tar.gz packages. Please select the one which is most appropriate for your purposes.

Liberica 14 introduced all new features supported by OpenJDK 14.

With the introduction of the Jigsaw feature in JDK 9 and Minimal VM it is now possible to create a Runtime that is sufficient to run your application and trim down the size of the Runtime. To generate a Runtime with just the Minimal VM, add --vm=minimal to jlink options.

By default, the Liberica uses Server VM. Server VM and Client VM can be enabled with -server and -client command line options, respectively. In case the deployment requires to minimize the footprint, it may be beneficial to use Minimal VM, which emphasises on a minimal footprint. It has C1 JIT compiler only, Serial GC and no serviceability features.

LibericaFX for the Raspberry Pi

Liberica JDK 14.0.1 come with a bundled LibericaFX implementation, which is based on OpenJFX. The following tables lists Java FX modules status of Liberica distribution

  • Java FX Graphics - works.
  • Java FX Controls - works.
  • Java FX Media - does not work.
  • Java FX Webkit - does not work.

The following pipelines are known to work: EGL, SW (direct framebuffer) and GTK. By default, Liberica tries to use the accelerated EGL pipeline, which requires the presence of EGL libraries. If they are not found, the implementation falls back to software rendering.

Use the following command line options to specify the rendering pipeline:

  • -Dprism.order=sw forces the use of software rendering pipeline. *
  • -Dprism.order=es2 forces the use of EGL pipeline and hardware acceleration. *
  • -Djavafx.platform=gtk if you would like to launch a LibericaFX application using Liberica from X11.

* Not supported on Raspberry Pi 4.

Please refer to the following wiki for more information.

Device IO API for the Raspberry Pi

Liberica JDK 14.0.1 comes with a bundled OpenJDK Device I/O (DIO) API implementation module. DIO provides a Java API for accessing Raspberry PI GPIO pins and for communicating with peripheral devices:

  • General Purpose Input/Output (GPIO).
  • Inter-Integrated Circuit Bus (I2C), Serial Peripheral Interface (SPI).
  • Universal Asynchronous Receiver/Transmitter (UART).

Please refer to the following wiki for more information.

Security Baselines

BellSoft Liberica follows the security baselines for Oracle Java SE. Please refer to the Oracle documentation for a list of issues fixed in a given release.

Known Issues

LibericaFX and EGL on Raspbian

As of 2017, the default location of Broadcom and has changed in Raspbian OS. If you'd like to leverage hardware EGL acceleration available from Broadcom video drivers in LibericaFX while running a recent Raspbian OS, run the following command:

cd /opt/vc/lib
sudo ln -s
sudo ln -s

Issues fixed

Issue Description
JDK-8044365 (dc) failing with ENOMEM when joining group (OS X 10.9)
JDK-8183369 RFC unconformity of HttpURLConnection with proxy
JDK-8221741 ClassCastException can happen when is used
JDK-8223898 Forward references to Nashorn
JDK-8223904 Improve Nashorn matching
JDK-8223935 PIT: java/awt/font/ fails on windows10
JDK-8224541 Better mapping of serial ENUMs
JDK-8224549 Less Blocking Array Queues
JDK-8225130 Add exception for expiring Comodo roots to VerifyCACerts test
JDK-8225216 gc/logging/ doesn't work for Shenandoah
JDK-8225603 Enhancement for big integers
JDK-8226346 Build better binary builders
JDK-8227467 Better class method invocations
JDK-8227542 Manifest improved jar headers
JDK-8229733 TLS message handling improvements
JDK-8231118 ARM32: Math tests failures
JDK-8231415 Better signatures in XML
JDK-8231785 Improved socket permissions
JDK-8232424 More constrained algorithms
JDK-8232581 Improve TLS verification
JDK-8233245 More adaptive sockets
JDK-8233250 Better X11 rendering
JDK-8233410 Better Build Scripting
JDK-8234027 Better JCEKS key support
JDK-8234146 compiler/jsr292/ times out on SPARC
JDK-8234408 Improve TLS session handling
JDK-8234825 Better Headings for HTTP Servers
JDK-8234841 Enhance buffering of byte buffers
JDK-8235274 Enhance typing of methods
JDK-8235332 fails with -XX:+StressGCM
JDK-8235691 Enhance TLS connectivity
JDK-8236201 Better Scanner conversions
JDK-8236759 ShouldNotReachHere in PhaseIdealLoop::verify_strip_mined_scheduling
JDK-8236851 Shenandoah: More details in Traversal GC event messages
JDK-8237192 Generate stripped/public pdbs on Windows for jdk images
JDK-8237217 Incorrect G1StringDedupEntry type used in StringDedupTable destructor
JDK-8237543 Shenandoah: More asserts around code roots
JDK-8237632 Shenandoah: accept NULL fwdptr to cooperate with JVMTI and JFR
JDK-8237780 Shenandoah: More reliable nmethod verification
JDK-8237837 Shenandoah: assert(mem == __null) failed: only one safepoint
JDK-8237879 make 4.3 breaks build
JDK-8237945 CTW: C2 compilation fails with assert(just_allocated_object(alloc_ctl) == ptr) failed: most recent allo
JDK-8237951 CTW: C2 compilation fails with "malformed control flow"
JDK-8238190 [JVMCI] Fix single implementor speculation for diamond shapes.
JDK-8238247 CTW runner should sweep nmethods more aggressively
JDK-8238356 CodeHeap::blob_count() overestimates the number of blobs
JDK-8238366 CTW runner closes standard output on exit
JDK-8238385 CTW: C2 (Shenandoah) compilation fails with "Range check dependent CastII node was not removed"
JDK-8238438 SuperWord::co_locate_pack picks memory state of first instead of last load
JDK-8238452 Keytool generates wrong expiration date if validity is set to 2050/01/01
JDK-8238534 Deep sign macOS bundles before bundle archive is being created
JDK-8238721 Add failing client jtreg tests to the Problem List
JDK-8238756 C2: assert(((n) == __null || !VerifyIterativeGVN || !((n)->is_dead()))) failed: can not use dead node
JDK-8238811 C2: assert(i >= req() || i == 0 || is_Region() || is_Phi()) with -XX:+VerifyGraphEdges
JDK-8238851 Shenandoah: C1: Resolve into registers of correct type
JDK-8238932 Invalid tier1_gc_1 test group definition
JDK-8238960 linux-i586 builds are inconsistent as the newly build jdk is not able to reserve enough space for object heap
JDK-8239005 [TESTBUG] test/hotspot/jtreg/runtime/StackGuardPages/ exeinvoke.c: must initialize static state before calling do_overflow()
JDK-8239081 Shenandoah: Consolidate C1 LRB and native barriers
JDK-8239142 C2's UseUniqueSubclasses optimization is broken for array accesses
JDK-8239354 Shenandoah: minor enhancements to traversal GC
JDK-8239456 vtable stub generation: assert failure (code size estimate)
JDK-8239787 AArch64: String.indexOf may incorrectly handle empty strings
JDK-8239798 SSLSocket closes socket both socket endpoints on a SocketTimeoutException
JDK-8239852 java/util/concurrent tests fail with -XX:+VerifyGraphEdges: assert(!VerifyGraphEdges) failed: verification should have failed
JDK-8239868 Shenandoah: ditch C2 node limit adjustments
JDK-8239904 Shenandoah: accumulated penalties should not be over 100% of capacity
JDK-8239915 Zero VM crashes when handling dynamic constant
JDK-8239931 [win][x86] vtable stub generation: assert failure (code size estimate) follow-up
JDK-8240069 Shenandoah: turn more flags diagnostic
JDK-8240070 Shenandoah: remove obsolete ShenandoahCommonGCStateLoads
JDK-8240076 Shenandoah: pacer should cover reset and preclean phases
JDK-8240215 Shenandoah: remove ShenandoahAllocationTrace
JDK-8240216 Shenandoah: remove ShenandoahTerminationTrace
JDK-8240217 Shenandoah: remove ShenandoahEvacAssist
JDK-8240220 IdealLoopTree::dump_head predicate printing is broken
JDK-8240286 [TESTBUG] Test command error in hotspot/jtreg/compiler/loopopts/superword/
JDK-8240511 Shenandoah: parallel safepoint workers count should be ParallelGCThreads
JDK-8240534 Shenandoah: ditch debug safepoint timeout adjustment
JDK-8240589 OtherRegionsTable::_num_occupied not updated correctly
JDK-8240629 argfiles parsing broken for argfiles with comment cross 4096 bytes chunk
JDK-8240671 Shenandoah: refactor ShenandoahPhaseTimings
JDK-8240749 Shenandoah: refactor ShenandoahUtils
JDK-8240750 Shenandoah: remove leftover files and mentions of ShenandoahAllocTracker
JDK-8240868 Shenandoah: remove CM-with-UR piggybacking cycles
JDK-8240948 Shenandoah: cleanup not-forwarded-objects paths after JDK-8240868
JDK-8240972 macOS codesign fail on macOS 10.13.5 or older
JDK-8241296 Segfault in JNIHandleBlock::oops_do()
JDK-8241445 Fix copyright in test/jdk/tools/launcher/
JDK-8241568 (fs) UserPrincipalLookupService.lookupXXX failure with IOE "Operation not permitted"
JDK-8241586 compiler/cpuflags/ fails on aarch64
JDK-8228867 Fix mistakes in FX API docs
JDK-8239109 Update SQLite to version 3.31.1
JDK-8236798 Enhance FX scripting support