Oracle JDeveloper 12c (12.2.1.4.0) is a stable, widely-used integrated development environment for building Oracle Fusion Middleware applications, ADF (Application Development Framework), and general Java EE applications. A common point of confusion for developers is the correct Java version required to install, run, and compile projects with this specific IDE release.
Explicitly set SetJavaHome in jdeveloper.conf to a JDK 8 path. jdeveloper 12.2.1.4 java version
./jdeveloper -J-Djava.home=/path/to/jdk8 Oracle JDeveloper 12c (12
JDeveloper 12.2.1.4 allows you to configure the for your projects: Compatibility with Newer Java Versions
| | Probable Cause | Fix | |------------------|--------------------|---------| | A JNI error has occurred. Please check your installation. | Running on Java 11+ | Switch to JDK 8 | | UnsupportedClassVersionError: JVMCFRE003 bad major version | Compiled with Java 11 but runtime is Java 8 | Recompile all sources with Java 8 target; ensure IDE's JDK setting is JDK 8 | | Java 9+ modules not found: java.xml.bind | Java 9+ removed JAXB | Downgrade to JDK 8; do not use --add-modules workarounds for JDeveloper | | Registry key 'Software\JavaSoft\Java Runtime Environment'\CurrentVersion' has value '11' (Windows only) | Windows registry points to newer Java | Install JDK 8 properly and ensure it's first in PATH, or use SetJavaHome in jdev.conf | | IDE fails to open any project: NullPointerException | JDK 8 update > 202 with backported changes | Use exactly JDK 8u202 or u151–u202 range |
: A full Java SE JDK is required; a standard Java Runtime Environment (JRE) is not sufficient for the development environment. Compatibility with Newer Java Versions