Jdeveloper 12.2.1.4 Java Version -

JDeveloper 12.2.1.4 is an Oracle IDE release in the 12c family used for Java, web, and Oracle ADF development. This paper documents the Java versions supported by JDeveloper 12.2.1.4, compatibility considerations, recommended Java Development Kit (JDK) configuration for IDE and applications, migration guidance, troubleshooting common Java-related issues, and best practices for development and deployment.

Oracle ADF, the core framework of JDeveloper, relies heavily on internal JDK APIs that were deprecated and removed in JDK 9 and later. For example, ADF’s binding layer and the Oracle XML parser use com.sun.* and sun.* packages. These packages are no longer accessible in modular JDKs without specific command-line flags, and even with flags, stability is not guaranteed.

JDeveloper 12.2.1.4 was released in 2017 as a maintenance release of the 12c family. It predates the JDK 11 module system and the removal of certain internal APIs. ADF 12.2.1.4 relies heavily on Java EE 6/7 features and specific JDK 8 internals (e.g., com.sun.xml.internal.ws.*). Running on newer JDKs results in: jdeveloper 12.2.1.4 java version

Let’s break down exactly which JDKs work, which are marginal, and which are completely unsupported.

| Java Version | Compatible? | Notes | |--------------|-------------|-------| | JDK 7 (all updates) | No | 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. | JDeveloper 12

A: Yes. Oracle JDeveloper 12.2.1.4 was tested primarily on Oracle JDK 8, but OpenJDK 8 (Adoptium/Temurin, RedHat, Amazon Corretto) generally works. The only potential issue is with Oracle-specific JDBC driver optimizations, which are negligible.

A: Possibly, but late JDK 8 updates (post-April 2019) contain security backports that may introduce new restrictions. Some users report that JDeveloper’s integrated profiler stops working. Test thoroughly. ⚠️ Important: Even though JDK 11 is newer,

| Java Version | Support Status | Notes | |--------------|-----------------------------------------|-------| | JDK 8 (1.8.0_191+) | ✅ Fully supported (LTS) | Required for IDE & ADF/WebLogic integration | | JDK 11 | ❌ Not supported in 12.2.1.4 | JDeveloper 12.2.1.4 runs on JDK 8 only | | JDK 7 or earlier | ❌ Not supported | |

⚠️ Important: Even though JDK 11 is newer, JDeveloper 12.2.1.4 is not certified for JDK 11. Running it on JDK 11 will cause crashes, plugin failures, and compilation issues.