Is Java 11 faster than Java 8?

These tests were done using the same code but compiled to Java 8 and Java 11 bytecode respectively to rule out the effects of compilation (although OpenJDK was used to compile to Java 8 and 11 bytecode in all cases). Usually you would have to write different code (using new features) when writing it to work on Java 11. For example, the Java Platform Module System (JPMS) could have been implemented or perhaps more efficient APIs could have been used. So potentially the performance on Java 11 could be better than on Java 8.

Use these results at your own risk! My test situation was specific and may differ from your situation, so it’s wise to run your own tests and base your decisions on those results. This blog post only states that upgrading from Java 8 to Java 11 may not improve performance and currently prevents you from using native compilation.


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Key difference between Java 8 and Java 11

  • The AppletViewer utility is compatible with Java version 8.
  • Due to lack of support for plug- In the Java browser, the applet API was deprecated in Java 11. Pattern recognition is not supported at all by Java 8.
  • Java 11 provides pattern recognition with asMatchPredicate and other() methods .
  • Later iterations of Java 8 have faster and more secure applications.
  • Garbage collectors like ZGC and Epsilon have boosted garbage collection.
  • TLS 1.3, an updated encryption technology used since Java 11, is faster and more secure than TLS 1.2, used since Java 8.
  • For security reasons, most browsers stopped supporting it and in Java 9 and Java SE 11 it was dropped.
  • The var keyword has been added to the language, simplifying and speeding up code development.

Java 8 requirements:

New OpenJDK versions are released and maintained by Oracle in the first half. For example, OpenJDK 19 will have its final release maintained by Oracle, 2, in January, after which it can become a community project if a member of the OpenJDK community steps forward to become the maintainer for the rest of their lives. If there are multiple candidates, the community decides who will become the maintainer. I kept OpenJDK 6 version for 4 years until 2020 and OpenJDK 7 until 202 Those were pretty stable releases and just needed some security fixes to port conservatively. My colleague Yuri Nesterenko is still the maintainer of OpenJDK 13 and 15 until March

Andrew Brygin, Staff Software Engineer, Azul

  • Your production system should already be running on the July 2022 Zulu PSU release, Zulu PSU 17.36, to include all previous fixes and updates.
  • October release contains both CPU and PSU package:
    • Zulu CPU 17.37, based on OpenJDK
      • Minimal changes to make runtime more secure .
        • For example, for October 2022 OpenJDK update: 14 fixes.
      • Easier to put into production since limited testing is required.
      • Must be deployed in production environment as soon as possible.
    • Zulu PSU 17.38, based on OpenJDK 17.0.5
      • Contains the same critical changes and other improvements.
        • For example, for October 2022 OpenJDK 11.0.17 update: 220 fixes.
      • It needs to be tested more thoroughly first as it contains more changes.
      • Must be implemented within the quarterly release schedule.
  • Your system is now running on Zulu PSU 17.38 (OpenJDK 17.0.5) and is ready to handle the same flow with the next quarterly update from January 2023 to move to the next CPU as it becomes available.
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Fortunately, it’s not the end of the world for Java SE 6 and 7. While Oracle may have ended its support, Azul continues to provide user support. Considered the best Java support in the industry, Azul is the only organization that focuses 100% on Java.

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