Alternatively, you can create a simple System.out in a scratch editor:

file. Simply extract the contents to your desired directory; no formal installation wizard is required. Configure Post-Installation Upon first launch, JDeveloper will ask for the path to your if it wasn't automatically detected. If you need to manually change the JDK later, locate the product.conf file (typically found in AppData\Roaming\JDeveloper\12.2.1.4.0\ ) and update the SetJavaHome Verify Setup Open JDeveloper and go to Help > About Select the

| Java Version | Compatible? | Notes | |--------------|-------------|-------| | JDK 7 (all updates) | | JDeveloper 12.2.1.4 will not launch; requires JDK 8 at minimum. | | JDK 8u45 – 8u111 | Marginal | May launch but lacks stability; missing required security features. | | JDK 8u112 – 8u150 | Partial | Some components (e.g., integrated WebLogic) may fail. | | JDK 8u151 – 8u202 | Yes (Certified) | Fully tested. The sweet spot. 8u202 is the recommended baseline. | | JDK 8u211 – 8u, latest 8u421 | Use with caution | Often works for basic Java SE editing, but ADF/WebLogic integration can be buggy. Oracle Support may reject tickets. | | JDK 9 – JDK 17 | No | The IDE may launch (surprisingly) but will fail to compile ADF projects or deploy to integrated WebLogic. | | JDK 17+ | No | Not designed for Java modules or the new classloaders. |

A 64-bit JDK is required for the Studio edition .

You may also need to check ~/.jdeveloper/12.2.1.4.0/product.conf on Linux/macOS or the AppData equivalent on Windows. 🚀 Installation Best Practices

is a long-term support (LTS) release for enterprise Java and Oracle Fusion Middleware development. It requires JDK 8 – specifically, the Oracle JDK 8 (or OpenJDK 8 with compatible certification).