Jdeveloper 12.2.1.4 Java Version [ 2026 Release ]

Explicitly set SetJavaHome in jdeveloper.conf to a JDK 8 path. Error 2: Compilation errors with Java 8 features (lambdas, etc.) Cause: Project compiler level is set to 1.7.

This flexibility means you can write Java 8 code (lambdas, streams, new date API) but still generate Java 7 bytecode if needed. If you are developing ADF applications, the deployment target WebLogic Server dictates your Java version: jdeveloper 12.2.1.4 java version

Edit the jdeveloper.conf file (located in ide/bin or the domain home) and set: Explicitly set SetJavaHome in jdeveloper

SetJavaHome C:\path\to\jdk1.8.0_421 Or launch from command line: jdeveloper 12.2.1.4 java version