Jdeveloper 12.2.1.4 Java Version May 2026

Go to Project Properties > Compiler and change Source Compatibility to 1.8 . Error 3: "Unsupported major.minor version 52.0" at runtime Cause: Your application was compiled with Java 8 (version 52) but deployed to a Java 7 runtime.

Edit the jdeveloper.conf file (located in ide/bin or the domain home) and set: jdeveloper 12.2.1.4 java version

If you attempt to set SetJavaHome to a JDK 11 path, the IDE will fail to start with cryptic module or classpath errors. Error 1: "This application requires Java 8" Cause: Your JAVA_HOME points to a different JDK version. Go to Project Properties > Compiler and change

Always verify your jdeveloper.conf and project compiler settings to avoid cryptic build or runtime mismatches. Last verified: Q2 2025. Based on Oracle product documentation and real-world usage. Go to Project Properties &gt