Expected output snippet:

32-bit platforms do not provide necessary memory management allocations.

Specifically, it requires the 64-bit version of JDK 1.8.0. Oracle recommends using the latest available update of JDK 8 (such as JDK 1.8.0_211 or higher) to ensure security and stability. Key Version Details Java SE Development Kit 8 (64-bit)

The Oracle Universal Installer checks the environment's JAVA_HOME . It will explicitly block installation if it detects a version higher than JDK 8.

The JDK version requirement aligns with the underlying Oracle WebLogic Server 12.2.1.4, which also runs on JDK 8.

Look for the line starting with SetJavaHome .

JDeveloper 12.2.1.4 will not launch or will exhibit severe graphical and compiler errors if run on Java versions higher than 8.

: Java SE 8 (specifically JDK 8u211+ is recommended).

This was the ultimate test. The integrated WebLogic Server (WLS) needed to boot up. This wasn’t a simple Tomcat servlet;

By locking your environment down to a stable 64-bit release of Java 8, you will ensure optimal performance, reliable local deployments, and smooth operations across the entire Oracle Fusion Middleware 12c ecosystem.

To confirm that the IDE is using the correct Java environment at runtime, perform the following verification inside the interface: 2 Installing the Oracle JDeveloper Software

Point your JAVA_HOME environment variable to the JDK 8 installation directory .

Even though the IDE itself runs on Java 8, that does not mean your application architecture has to stay in 2014. JDeveloper provides the flexibility to compile your specific application modules targeting newer Java versions. To configure a newer Java version for your project: Open your project in JDeveloper. Go to > Compiler .

Unresponsive IDE UI components and internal thread deadlocks. How to Configure the JDK in JDeveloper 12.2.1.4

Follow this step-by-step guide to set up the proper Java environment.