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Migrate from Oracle JDK to OpenJDK.

My services installed OracleJDK package version:

1.

java version "1.6.0_45" Java(TM) SE Runtime Environment (build 1.6.0_45-b06) Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)

2.

java version "1.8.0_151" Java(TM) SE Runtime Environment (build 1.8.0_151-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

3.

java version "1.7.0_67" Java(TM) SE Runtime Environment (build 1.7.0_67-b01) Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)

What are OpenJDK versions same with each my OracleJDK version? Please help me

Young King
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  • Why do you need to? – Michael Nov 19 '18 at 09:49
  • @Michael Free update of Oracle JDK (formerly Sun JDK) that is widely used in app, service and solution development/operations ends in January '19. Accordingly, it cannot be used for business, commercial or operational purposes without a commercial license. – Young King Nov 19 '18 at 10:01
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    But, for example, Java 6 is already out of public support for both the OpenJDK and the Oracle JDK. Oracle JDK 7 has been out of public support for ages. Why are you deciding this now? You can continue to use all 3 for free, just as you always could, but you will not receive public support - you need to pay. – Michael Nov 19 '18 at 10:07
  • Hi @Michael For public update versions that use a specific commercial API, commercial licensing agreements are also required for enterprise operations and services (Oracle BCL licenses) – Young King Nov 19 '18 at 11:19

1 Answers1

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I'm not sure that this is going to help, but the OpenJDK version numbers match the Oracle JDK version numbers.

The problems are:

  • Where do you find a downloadable build of OpenJDK for a particular version and hardware platform.

  • (For Linux and similar) how do you map the OpenJDK version to a package or set of packages for your preferred distro.

Certainly, you are unlikely to find Java 6 or Java 7 packages for recent releases of Linux in the standard package repo's. (Recent versions of Fedora, for example, only have Java 8 and later.) When Oracle stopped public support for Java 6 and Java 7, the OpenJDK-based packages were deprecated.

However, if the builds exist you should be able to find them based on the information in the following OpenJDK page:

If you cannot find packages, and if you are willing to put in the necessary effort, it should be possible to download the relevant OpenJDK sources and create your own builds.

But my advice would be to upgrade your Java platform to Java 8, with a view to upgrading to Java 11 soon. If you can't afford the effort and (potential) risk of upgrading, then you would be advised to pay for a Java support contract.

Stephen C
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