Jdeveloper 12.2.1.4 Java Version |verified| | DIRECT |

Oracle JDeveloper 12.2.1.4.0 is a key release within the Oracle Fusion Middleware 12c family. This version focuses on stability, enhanced REST capabilities, and modern UI components for the Application Development Framework (ADF).  Java Version Requirements 

Cause: Using JDK 9 or higher.
Solution: Switch to JDK 8. jdeveloper 12.2.1.4 java version

10. Example configuration snippets

• jdev.conf (example line):

  or later updates within the Java 8 family. Java versions 9 and above (including Java 11 and 17) are not supported for this specific release. Oracle Help Center Installation Guide for JDeveloper 12.2.1.4 Oracle JDeveloper 12

  Part 9: Future-Proofing – Moving Away from JDeveloper 12.2.1.4

  The strict dependency on JDK 8 is a clear signal that JDeveloper 12.2.1.4 is a legacy tool. Oracle has since released JDeveloper 12.2.1.5 (still JDK 8) and JDeveloper 12.2.1.6 (still JDK 8). The only way to escape JDK 8 is to: etc.) may seem to work

  File Location (Windows): %USERPROFILE%\AppData\Roaming\JDeveloper\12.2.1.4.0\product.conf.

  Critical Note: Even though newer JDK 8 updates (like 8u301, 8u321, etc.) may seem to work, Oracle only certifies up to specific update levels for this IDE. Deviations can cause issues with built-in Maven, version control integrations, and ADF BC (Business Components).

  Configuring JDeveloper to use a specific JDK: