JDLG requires Java version 5 or newer.

Starting with JDLG 2.0, the OpenJDK (Open Java Development Kit) is supported, a free and open-source implementation of the Java Standard Edition (SE).

Started by Sun Microsystems in 2006, OpenJDK is meanwhile the official reference implementation of Java SE, backed by contributing companies like Amazon, ARM, Google, IBM, Intel, Microsoft, Oracle, Red Hat, SAP, and many more.

OpenJDK-based Java distributions are available free for commercial use, providing long-term support free of charge with regular updates.

Notes:

• We currently recommend to use a Java 8 distribution with long-term support because this does not require any specific configuration to enable the JDLG drag & drop functionality.

• OpenJDK distributions do not include Java Webstart. We provide the EQWS utility as a simple and lightweight alternative.

The distributions below have been tested to work with JDLG 2.0 or newer:

AdoptOpenJDK

Free for commercial use, long-term supported (free of charge, quarterly updates, Java 8 supported until at least May 2026, Java 11 supported until at least October 2024), available for Windows, macOS, Linux, Solaris, AIX

Quote: "AdoptOpenJDK is a community of Java User Group (JUG) members, Java developers and vendors including Azul, Amazon, GoDaddy, IBM, jClarity (acquired by Microsoft), Microsoft, New Relic, Pivotal and Red Hat. ..."

Amazon Corretto

Free for commercial use, long-term supported (free of charge, quarterly updates, Java 8 supported until at least June 2023, Java 11 supported until at least August 2024), available for Windows, macOS, Linux

Quote: "Corretto is a build of the Open Java Development Kit (OpenJDK) with long-term support from Amazon. Corretto is certified using the Java Technical Compatibility Kit (TCK) to ensure it meets the Java SE standard ..."

Zulu Community

Free for commercial use, long-term supported (free of charge, quarterly updates, Java 8 supported until March 2026, Java 11 supported until September 2027), available for Windows, macOS, Linux, Solaris

Quote: "Zulu is verified compliant with the Java SE specifications using the OpenJDK Community Technology Compatibility Kit (TCK) ... Zulu Community builds follow the OpenJDK quarterly release cycle. ... OpenJDK 8-based Zulu Community builds now include support for TLS 1.3, backported from OpenJDK 11."

Besides, JDLG is compatible with Oracle^™ Java which is, however, no longer free for commercial use.