Jdeveloper 12.2.1.4 Java Version 〈99% REAL〉

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

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

SetJavaHome C:\path\to\jdk1.8.0_421 Or launch from command line: Edit the jdeveloper