JDK vendors

cjdk allows you to choose among JDKs and JREs released from different sources. Names such as adoptium, zulu-jre, or graalvm-community are used to select a particular series of JDKs. These names are referred to as “vendors”, even though they do not map 1:1 to companies.

If no vendor is specified, adoptium is used unless the environment variable CJDK_VENDOR is set to an alternative default.

About available vendors

The available set of vendors is determined by the JDK index and is not built into cjdk itself.

Common vendor names for full JDKs include temurin, zulu, liberica, corretto, ibm-semeru, and graalvm-community. Common vendor names for JREs include temurin-jre, zulu-jre, and liberica-jre.

Note

Eclipse Temurin was previously known as AdoptOpenJDK. To specifically get AdoptOpenJDK releases, use adopt; to specifically get Temurin releases, use temurin; adoptium will get a Temurin release if available, falling back to AdoptOpenJDK for older versions. (This behavior is defined by the index, not cjdk itself.)

Note

For GraalVM, the recommended vendor name is graalvm-community, which uses Java-version-aligned numbering (e.g., version 21.0.2 is for Java 21). Legacy vendors graalvm (Java 8), graalvm-java11, graalvm-java17, etc., are also available; these use GraalVM release version numbers (e.g., 22.3.3) which are independent of the Java version. The -javaN suffix indicates the Java version.

Note

For IBM Semeru, use ibm-semeru. There are also vendor names like ibm-semeru-openj9-java11 (per Java major version), containing JDK versions that include an OpenJ9 VM version suffix (e.g., 11.0.29+7_openj9-0.56.0).