The full version string for this update release is 15.0.2+10 (OpenJDK 15.0.2+7 baseline). The version number is 15.

Liberica JDK 15.0.2+10

Liberica is a certified, Java SE 15-compliant distribution of OpenJDK 15 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 15.

  • Linux ARMv7 distribution contains Device IO API compiled for Raspberry Pi.

Please refer to the Oracle JDK 15.0.2 release notes for further information on JDK 15 features. This document further outlines the peculiarities of Liberica distribution as compared to Oracle JDK 15 distribution.

Supported Server and Desktop configurations

Liberica is supported on the following OSes:

  • Ubuntu Linux 16.04, 18.04, 20.04 (x86, x86_64, ARMv8)

  • Debian Linux 8, 9, 10 (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 15.0.2 distribution

Liberica JDK 15 are distributed as .rpm, .zip, .deb and .tar.gz packages. Please select the one which is most appropriate for your purposes.

Liberica 15 introduced all new features supported by OpenJDK 15.

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 15 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 15 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 libEGL.so and libGLESv2.so 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 libbrcmEGL.so libEGL.so
sudo ln -s libbrcmGLESv2.so libGLESv2.so

Issues fixed

IssueDescription

JDK-8197981

Missing return statement in __sync_val_compare_and_swap_8

JDK-8232114

JVM crashed at imjpapi.dll in native code

JDK-8239105

Add exception for expiring Digicert root certificates to VerifyCACerts test

JDK-8247251

Assert ’(_pcs_length == 0 || last_pc()→pc_offset() < pc_offset) failed: must specify a new, larger pc offset’ failure

JDK-8247619

Improve Direct Buffering of Characters

JDK-8247741

Test test/hotspot/jtreg/runtime/7162488/TestUnrecognizedVmOption.java fails when -XX:+IgnoreUnrecognizedVMOptions is set

JDK-8248411

[aarch64] Insufficient error handling when CodeBuffer is exhausted

JDK-8248596

[TESTBUG] compiler/loopopts/PartialPeelingUnswitch.java times out with Graal enabled

JDK-8248667

Need support for building native libraries located in the test/lib directory

JDK-8249165

Remove unneeded nops introduced by 8234160 changes

JDK-8249176

Update GlobalSignR6CA test certificates

JDK-8249183

JVM crash in “AwtFrame::WmSize” method

JDK-8249192

MonitorInfo stores raw oops across safepoints

JDK-8249217

Unexpected StackOverflowError in “process reaper” thread still happens

JDK-8249781

AArch64: AOT compiled code crashes if C2 allocates r27

JDK-8250257

Bump release strings for JDK 15.0.2

JDK-8250928

JFR: Improve hash algorithm for stack traces

JDK-8251397

NPE on ClassValue.ClassValueMap.cacheArray

JDK-8251458

Parse::do_lookupswitch fails with “assert(_cnt >= 0) failed”

JDK-8252120

compiler/oracle/TestCompileCommand.java misspells “occured”

JDK-8252292

8240795 may cause anti-dependence to be missed

JDK-8252359

HotSpot Not Identifying it is Running in a Container

JDK-8252367

Undo JDK-8245000: Windows GDI functions don’t support large pages

JDK-8252368

Undo JDK-8245002: Windows GDI functions don’t support NUMA interleaving

JDK-8252470

java/awt/dnd/DisposeFrameOnDragCrash/DisposeFrameOnDragTest.java fails on Windows

JDK-8252660

Shenandoah: support manageable SoftMaxHeapSize option

JDK-8252754

Hash code calculation of JfrStackTrace is inconsistent

JDK-8253191

C2: Masked byte comparisons with large masks produce wrong result on x86

JDK-8253222

Shenandoah: unused AlwaysTrueClosure after JDK-8246591

JDK-8253224

Shenandoah: ShenandoahStrDedupQueue destructor calls virtual num_queues()

JDK-8253226

Shenandoah: remove unimplemented ShenandoahStrDedupQueue::verify

JDK-8253284

Zero OrderAccess barrier mappings are incorrect

JDK-8253375

OSX build fails with Xcode 12.0 (12A7209)

JDK-8253566

clazz.isAssignableFrom will return false for interface implementors

JDK-8253714

[cgroups v2] Soft memory limit incorrectly using memory.high

JDK-8253727

[cgroups v2] Memory and swap limits reported incorrectly

JDK-8253756

C2 CompilerThread0 crash in Node::add_req(Node*)

JDK-8253778

ShenandoahSafepoint::is_at_shenandoah_safepoint should not access VMThread state from other threads

JDK-8253791

Issue with useAppleColor check in CSystemColors.m

JDK-8253960

Memory leak in Java_java_lang_ClassLoader_defineClass0()

JDK-8254081

java/security/cert/PolicyNode/GetPolicyQualifiers.java fails due to an expired certificate

JDK-8254144

Non-x86 Zero builds fail with return-type warning in os_linux_zero.cpp

JDK-8254166

Zero: return-type warning in zeroInterpreter_zero.cpp

JDK-8254177

(tz) Upgrade time-zone data to tzdata2020b

JDK-8254319

Shenandoah: Interpreter native-LRB needs to activate during HAS_FORWARDED

JDK-8254320

Shenandoah: C2 native LRB should activate for non-cset objects

JDK-8254560

Shenandoah: Concurrent Strong Roots logging is incorrect

JDK-8254790

SIGSEGV in string_indexof_char and stringL_indexof_char intrinsics

JDK-8254854

[cgroups v1] Metric limits not properly detected on some join controller combinations

JDK-8254982

(tz) Upgrade time-zone data to tzdata2020c

JDK-8255065

Zero: accessor_entry misses the IRIW case

JDK-8255067

Restore Copyright line in file modified by 8253191

JDK-8255226

(tz) Upgrade time-zone data to tzdata2020d

JDK-8255599

Change jdk 15.0.2 milestone to fcs for build b04

JDK-8255603

Memory/Performance regression after JDK-8210985

JDK-8256051

nmethod_entry_barrier stub miscalculates xmm spill size on x86_32

JDK-8256427

Test com/sun/jndi/dns/ConfigTests/PortUnreachable.java does not work on AIX

JDK-8256618

Zero: Linux x86_32 build still fails

JDK-8257181

s390x builds are very noisy with gc-sections messages

JDK-8257641

Shenandoah: Query is_at_shenandoah_safepoint() from control thread should return false

JDK-8257701

Shenandoah: objArrayKlass metadata is not marked with chunked arrays

JDK-8257897

Fix webkit build for XCode 12

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