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The i2b2 was developed using the Java platform and is needed to develop and deploy the i2b2 cells on the server. The i2b2 server requires the Java Development Kit (JDK) to be installed before you can deploy any i2b2 core cells.

Required Version: Java 17 Oracle or OpenJDK* (i2b2 1.8.2+) or Java 8.0 / 11.0 (i2b2 prior to 1.8.2)

Download from Website: Oracle JDK (http://java.sun.com) 

Prior to 1.8.2: Click the link for "Java SE 8u411" or "Java SE 11.0.23 (LTS)", select your operating system, and download the file.

1.8.2+: Click the link for "Java SE 17 (LTS)", select your operating system, and download the file.

Download: OpenJDK 17 (1.8.2+) (https://jdk.java.net/archive/)

1.8.2+: Find the link for the latest OpenJDK 17.0.x build for your operating system, and click to download the file.

* The Oracle JDK 17 license is free only for individuals, development/demonstrations, or when used in conjunction with other specific Oracle software. The OpenJDK is a free alternative that has been tested with i2b2.

Java JDK Installation Steps (Windows install is shown in this example)

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