Apart from that Red Hat also provides subscriptions for OpenJDK for Workstations. Support for OpenJDKĪpart from Oracle providing support for their Oracle JDK, there are a number of support options available from the other commercial players.Īmong them is Red Hat which supports its OpenJDK builds as part of a Red Hat Enterprise Linux (RHEL) or a Red Hat Middleware subscription. Wikipedia appears to have an exhaustive list. There are more builds of OpenJDK, that may be applicable for more niche use cases, some of which we list here:Īnd there are even more. Your distributor will provide you with the best system integration and with timely updates - as they do with most if not all of the other software you use. If you are running on a Linux distribution, I would recommend you use the provided OpenJDK builds. Although Red Hat does provide OpenJDK builds for Windows also, that correspond to their Linux builds. Generally these builds only work on their respective systems. This gives easy package installation and upgrades using the systems package manager. Linux distributionsĪll Linux distributions have been building on OpenJDK for Java support for a long time. Oracle also produces open source builds for OpenJDK, but these are mainly intended for development purposes and also do not cover Java 8. However, note that Amazon also is a sponsor of the AdoptOpenJDK effort. They have publicly announced to support Amazon Corretto 8 until 2026. Amazon CorrettoĪmazon Corretto is another build based off of OpenJDK and is supported by Amazon on a best effort basis. If you do not require support, this is the version I would recommend - but only if you are not on Linux. While the OpenJ9 build should have better performance for certain workloads, choose the hotspot based JDK unless you have a good reason to prefer OpenJ9.ĪdoptOpenJDK has recently joined the Eclipse foundation and will change name to Eclipse Adoptium. AdoptOpenJDKĪdoptOpenJDK is a community build for OpenJDK.ĪdoptOpenJDK has a long list of sponsors among them a number of industry players, like Red Hat, Amazon and IBM.ĪdoptOpenJDK provides builds for all major platforms, including Linux, Windows and Mac OS X.ĪdoptOpenJDK actually provides two different builds - one based on hotspot - the classic java virtual machine as also used by the Oracle JDK and OpenJ9, which is a JVM provided based on IBMs JDK. The following is a subsection of the most popular options. There are a number of JDKs built from OpenJDK. We’ll take a look at these differences in a minute. And it fact it is, but there are certain proprietary additions to the Oracle JDK which are not available in the open source builds and therefore can cause problems when migrating. Since the open source OpenJDK builds and the Oracle JDK builds share the same base, it is fair to assume that a migration should be unproblematic. Multiple JDKs are produced from that source base - among them commercial variants as the Oracle JDK and open source versions as the ones build by the linux distributors, such as Red Hat or Ubuntu. OpenJDK is the upstream open source project of Java, originally open sourced by Sun Microsystems in 2006. The primary focus of this article revolves around Java 8 based JDKs - however much of it is also applicable to later Java versions including the Java 11 LTS release. In this blog post we will look into OpenJDK as an alternative to the Oracle provided JDK and how one would migrate to it. At the same time Oracle started requiring a subscription for Oracle JDK use in production environments. In the beginning of 2019 Oracle stopped releasing free-of-charge updates to their JDK, except for personal use.
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