One significant difference is that the Oracle company reserves the right to rapidly supply their paid support customer base with urgent patches not currently found in OpenJDK. So there is nearly no practical difference. Oracle even went so far as to open-source and make available at no cost their formerly commercial tools Mission Control and Flight Recorder, both now a part of OpenJDK. Oracle has declared their intention to keep their commercial product Oracle JDK at feature-parity with OpenJDK. Read their terms.)Ī build of the OpenJDK source-code, freely available, unsupported. (Free-of-cost only for development & testing, not deployment. Oracle actually provides two such products:Ī commercial product, with paid support plans.
Many companies provide distributions of OpenJDK for installation, as binaries or installers.Oracle is the principal participant in the OpenJDK project, alongside IBM & Red Hat, Apple, SAP, Azul Systems, Microsoft, and others. This project publishes only source-code, not binaries or installers to get Java running on your computer (except for some early-access builds). OpenJDK is an open-source project, implementing the Java Specifications, JSRs, and JEPs that define the Java platform.To sum it up: source-code versus binaries/installers. Understand the differences between Oracle JDK and Open JDK. Here is some other information as well, including vital changes as of early 2021.
JDK Mission Control files, installed into \missioncontrol.Īppends \missioncontrol to the system %PATH% environment variable.Other Answers are correct. Launch JAR files with the OpenJDK context menu. Sets to the system %REDHAT_JAVA_HOME% environment variable.Īssociation for JAR files.
Sets to the system %JAVA_HOME% environment variable. This component includes the following registry keys:Īppends \bin to the system %PATH% environment variable. Defaults to true, meaning that the jdk_registry_runtime component is enabled. Defaults to true, meaning that the jdk component is enabled.Ī set of Windows registry keys that other software can use to locate JDK installation files.
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