Even if you installed the bundled version, you might want to point JDeveloper to a different JDK 8 update on your system (e.g., you have 1.8.0_301 installed globally).
To check or change the JDK version used by the IDE:
Download the generic installer (e.g., jdevstudio12214.jar). Run it with: jdeveloper 12.2.1.4 java version
java -jar jdevstudio12214.jar
The installer will detect JDK 8 from JAVA_HOME. Do not try to use a newer JDK to run the installer – it will fail.
java.lang.IllegalAccessError: class oracle.adf.share.security.ADFSecurityManager (in unnamed module) cannot access class sun.security.action.GetPropertyAction (in module java.base)
Cause: Using JDK 11. The internal API is now encapsulated.
Solution: Switch to JDK 8. Even if you installed the bundled version, you
Oracle JDeveloper is a free, integrated development environment (IDE) that provides end-to-end development for Oracle Fusion Middleware, Oracle Application Development Framework (ADF), and Java Platform, Enterprise Edition (Java EE) applications. With the release of version 12.2.1.4, many developers have found themselves asking a critical question: What Java version does JDeveloper 12.2.1.4 support?
If you have landed on this article while searching for the keyword "jdeveloper 12.2.1.4 java version", you are not alone. The relationship between JDeveloper and the Java Development Kit (JDK) is not always straightforward. Using the wrong JDK can lead to cryptic errors, failed installations, broken wizards, or runtime crashes. The installer will detect JDK 8 from JAVA_HOME
This article will provide a definitive, detailed breakdown of exactly which Java versions work with JDeveloper 12.2.1.4, which ones to avoid, and how to configure everything correctly.
| Symptom | Root cause | |----------------------------------------------|--------------------------------| | IDE fails to start with “Java version mismatch” | Running JDK 11+ | | ADF Faces design time exceptions | Compiler compliance > 8 | | WebLogic integration grayed out | Default JDK not JDK 8 |