Comparison of Java virtual machines

Version information

Name Creator First public release Latest stable version Latest release date Cost, availability License
Eclipse OpenJ9 (formerly IBM J9) IBM 15 Mar 2018 0.62.0 Edit this on Wikidata 15 September 2026; 38 days ago Free Eclipse Public License 2.0
Apache License 2.0
GCJ GNU 6 September 1998 6.4 (Terminal) 4 July 2017 Free GPL version 2 or later, with the "libgcc exception"
GraalVM Oracle May 2019 25.1.3 Edit this on Wikidata 30 June 2026; 3 months ago Free GPL version 2 only
HotSpot, OpenJDK edition Sun Microsystems, Oracle 27 April 1999 jdk-16 16 March 2021 Free GPL version 2 only
HotSpot, Oracle JDK edition Sun Microsystems, Oracle 27 April 1999 jdk 16 16 March 2021 Free Proprietary
HotSpot, Java SE embedded edition Sun Microsystems, Oracle 27 April 1999 ? ? Commercial Proprietary
HotSpot, Zero port Gary Benson ? ? ? Free GPL version 2 only
IKVM Jeroen Frijters 28 June 2004 8.16.3 Edit this on Wikidata 17 October 2026; 6 days ago Free zlib License
JamVM Robert Lougher 13 March 2003 2.0.0 30 July 2014 Free GPL version 2 or later
Jikes RVM IBM 14 October 2001 3.1.4 18 February 2016 Free Eclipse Public License version 1.0
Kaffe Transvirtual Technologies 1996 1.1.9 22 February 2008 Free GPL version 2 or later
SableVM Sable Research Group ? 1.13 30 March 2007 Free LGPL version 2.1 or later

Technical information

JVM Status Latest supported Java version Supported class libraries Performance
GNU Classpath OpenJDK Other Interpretation AOT JIT
GCJ No longer maintained or distributed by GNU as of GCC 7 ? Yes No Yes Yes No
HotSpot, OpenJDK edition Reference implementation. 1.8 No Yes Yes No Yes
HotSpot, Oracle JDK edition Reference implementation. 1.8 No Yes Yes No Yes
HotSpot, Java SE embedded edition ? No Yes Yes No Yes
HotSpot, Zero port Interpreter-only port of OpenJDK using almost no assembly language and designed to be very portable. 1.7 No Yes Yes No No
IKVM 1.8 ? ? Depends on .NET runtime
JamVM 1.8 Yes Yes Yes No Yes
Jikes RVM 1.6 Yes Port Apache Harmony No ? Yes
Kaffe 1.4 Yes No Yes No Yes
SableVM Unmaintained 1.4 Yes No Yes No No

Supported CPU architectures

JVM x86 x86-64 SPARC MIPS Itanium Power ISA ARM Alpha S/390 z/Architecture m68k
GCJ Yes Yes Yes Yes Yes Yes Yes Yes Yes No No
HotSpot, OpenJDK edition Yes Yes Solaris only Port No PowerPC/AIX port Yes No No No No
HotSpot, Oracle JDK edition Yes Yes Solaris only No Java 1.6 No Yes No No No No
HotSpot, Java SE embedded edition Yes Yes Yes ? ? Yes Yes ? ? ? ?
HotSpot, Zero port Yes Yes No Yes Yes Yes Yes Yes No Yes No
IKVM Depends on .NET runtime
JamVM Yes Yes Yes Yes No Yes Yes No No No No
Jikes RVM Yes No No No No Yes No No No No No
Kaffe Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes
SableVM Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes

Supported operating systems

JVM Windows Linux FreeBSD NetBSD OpenBSD Solaris OpenSolaris Darwin macOS AIX IRIX Other
GCJ Yes Yes Yes ? ? Yes ? Yes Yes ? Yes DEC OSF 4.0f and 5.1, Hitachi SH-3/4 micro-controller
HotSpot, OpenJDK edition Yes (distributed as source code) Yes Port Port Port Yes Yes ? Yes Port No OS/2port, Haiku port
HotSpot, Oracle JDK edition Yes Yes No No No Yes ? ? Yes No No
HotSpot, Java SE embedded edition Yes Yes No No No Yes ? No No No No
HotSpot, Zero port No Yes No No No No No No No No No
IKVM Depends on .NET runtime
JamVM No Yes Yes No Yes Yes Yes Yes Yes No No Jailbroken iPhone, kFreeBSD
Jikes RVM No Yes No No No No No No Yes Yes No
Kaffe Using Cygwin Yes Yes Yes Yes Yes ? Yes Yes Yes Yes AmigaOS, BeOS, several others
SableVM Using Cygwin Yes Yes ? ? ? ? ? Yes ? ?

References

  1. ↑ "Release Eclipse OpenJ9 v0.8.0 · eclipse-openj9/openj9". Github. Retrieved 4 June 2023.
  2. ↑ "Release 0.62.0". 15 September 2026. Retrieved 16 September 2026.
  3. ↑ "The GCJ FAQ - GNU Project - Free Software Foundation (FSF)". Gcc.gnu.org. Retrieved 31 July 2012.
  4. ↑ "GraalVM 25.1.3". 30 June 2026. Retrieved 30 June 2026.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 "Oracle Java SE Embedded Overview". Oracle. 19 April 2018. Retrieved 2 April 2024.
  6. ↑ "gbenson.net". gbenson.net. Retrieved 31 July 2012.
  7. ↑ "Release 8.16.3". 17 October 2026. Retrieved 18 October 2026.
  8. ↑ "LICENSE.md". ikvmnet/ikvm. Retrieved 22 March 2025 – via GitHub.
  9. 1 2 "Release 3.1.4 · JikesRVM/JikesRVM". GitHub. 18 February 2016. Retrieved 17 July 2025.
  10. ↑ "License". Jikes RVM. Retrieved 31 July 2012.
  11. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 "kaffe/kaffe". GitHub. 9 November 2021.
  12. ↑ "SableVM - Browse /sablevm/1.13 at". Sourceforge.net. 30 March 2007. Retrieved 31 July 2012.
  13. ↑ "GCC 7 Release Series — Changes, New Features, and Fixes - GNU Project - Free Software Foundation (FSF)". gcc.gnu.org.
  14. ↑ "README.md". ikvmnet/ikvm. 14 July 2025. Retrieved 17 July 2025 – via GitHub.
  15. 1 2 "JamVM | Release notes for JamVM at SourceForge.net". sourceforge.net. 30 July 2014. Retrieved 24 October 2014.
  16. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 "JamVM -- A compact Java Virtual Machine". jamvm.sourceforge.net.
  17. ↑ "JikesRVM/libraryInterface/Common/src/org/jikesrvm/classlibrary/JavaLangSupport.java at master · JikesRVM/JikesRVM". GitHub. Retrieved 17 July 2025.
  18. 1 2 "SourceForge: jikesrvm/jikesrvm: files". Jikesrvm.hg.sourceforge.net. 19 July 2012. Retrieved 31 July 2012.
  19. ↑ "openjdk4jikesrvm - Use Openjdk library as JikesRVM's class library - Google Project Hosting". Retrieved 31 July 2012.
  20. ↑ "[#RVM-549] Initial support for OpenJDK class library - jira.codehaus.org". Archived from the original on 3 June 2013. Retrieved 22 July 2012.
  21. ↑ "Feature request for interpreter". Archived from the original on 4 May 2015. Retrieved 12 November 2012.
  22. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 "GCJ - Status - GNU Project - Free Software Foundation (FSF)". Archived from the original on 17 April 2016. Retrieved 25 July 2016.
  23. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 "Oracle JDK 7 and JRE 7 Certified System Configurations". www.oracle.com.
  24. ↑ "OpenJDK: Port: Mips". openjdk.java.net.
  25. ↑ "MIPSPort - IcedTea". icedtea.classpath.org. Archived from the original on 1 February 2020. Retrieved 1 February 2020.
  26. 1 2 "OpenJDK: PowerPC/AIX Port Project". openjdk.java.net.
  27. ↑ "Java SE 6 Update Release Notes". Oracle. 4 March 2019. Retrieved 2 April 2024.
  28. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 "ZeroSharkFaq - IcedTea". icedtea.classpath.org. Archived from the original on 9 May 2020. Retrieved 1 February 2020.
  29. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 "Supported Platforms". www.jikesrvm.org.
  30. 1 2 3 4 5 6 7 8 9 10 11 12 13 "SableVM Project". sablevm.org.
  31. ↑ "OpenJDK Build README". Archived from the original on 6 July 2012. Retrieved 24 July 2012.
  32. 1 2 3 "OpenJDK: BSD Port Project". openjdk.java.net.
  33. ↑ "OpenJDK Build README". Archived from the original on 6 July 2012. Retrieved 24 July 2012.
  34. ↑ "OpenJDK: Mac OS X Port Project". openjdk.java.net.
  35. ↑ "Java port for OS/2 and OS/2-based systems". trac.netlabs.org. Archived from the original on 17 July 2025. Retrieved 17 July 2025.
  36. ↑ "OpenJDK: Port: Haiku". openjdk.java.net.
  37. 1 2 3 4 5 6 7 8 9 10 11 "OpenJDK: Zero-Assembler Project". openjdk.java.net.