JDK vendors include, in no particular order: Azul Systems, SAP, BellSoft, Adoptium, Oracle, Microsoft, Amazon, IBM, Red Hat, and more.

For example, the Adoptium project sponsors an advanced testing suite, AQAvit, used for their own JDK products, and made available to other JDK vendors. Some vendors perform additional testing beyond that done at the OpenJDK project, and therefore beyond that done for Oracle OpenJDK. All are well-tested, perform similarly, and share the behavior defined by the Java specifications. You can choose and use a JDK product from any of several vendors. Oracle’s commercial Java product, Oracle Java, is also largely built from OpenJDK, but Oracle reserves the right to add patches for urgent bug fixes or compatibility tweaks for fast delivery to their paid customers.Oracle’s Oracle OpenJDK product, available at no cost, is simply a build made straight from the OpenJDK codebase.Some of those companies contributed their own JDK source code to OpenJDK in order to centralize development of a single joint implementation of the Java specifications.

OpenJDK is an open-source project owned by Oracle with major involvement from IBM, Apple, Red Hat, and others. Nearly all Java implementations are built largely, if not entirely, for the codebase developed at the OpenJDK project. The Oracle OpenJDK product is not any better or more special than any other Java implementation. Is it safe to just pick any of the other images or would they lack some of the core JDK functionality? Other than that, Corretto is built from the same OpenJDK codebase as the Oracle OpenJDK product.Īmazon Corretto is certified to meet the Java SE standard and can be used as a drop-in replacement for many Java SE distributions. The Amazon Corretto product will work with the same Java-specified behavior, and will provide the same performance, as the Oracle OpenJDK product.Īmazon reserves the right to deliver urgent fixes, and to include any tweaks needed for their purposes as a cloud provider, in their Corretto product.

You can confidently choose any JDK product offered by IntelliJ.

Oracle open jdk