for your specific operating system (Windows or Linux) Setting up your first Java/ADF project
JDeveloper 12c is built upon the Oracle Fusion Middleware platform, which is tightly integrated with Java 8. While Java 11 and Java 17 are standard in many modern development environments, JDeveloper 12.2.1.4.0 is not supported on these newer versions. Attempting to use Java 9, 10, or higher will result in installation or runtime errors. Key Java Configuration Steps jdeveloper 12.2.1.4 java version
If you are setting up your development environment, I can provide more specific help. Let me know: for your specific operating system (Windows or Linux)
: /Users/ /.jdeveloper/12.2.1.4.0/product.conf Modification Instructions Key Java Configuration Steps If you are setting
To force JDeveloper to target the correct JDK 8 home, you must edit the file. File Paths by Operating System
If you download the generic JAR installer (often used on macOS or restricted environments):
JDeveloper 12.2.1.4 is specifically designed for JDK 8. Adhering to the official requirement of Oracle JDK 1.8.0_191+ (or the recommended 1.8.0_211+) ensures a stable development environment. Newer Java versions are not supported. For future projects, consider newer JDeveloper releases supporting later Java versions, but for maintaining and building applications with JDeveloper 12.2.1.4, JDK 8 remains the standard.