A: Check that the WebLogic domain also uses JDK 8. Go to Servers view → right-click IntegratedWebLogicServer → Server Properties → JDK → Set to JDK 8 home.
Update the SetJavaHome property to point to your new JDK 8 path. Key Compatibility Considerations Change JDK used by JDeveloper - Mark's Blog jdeveloper 12.2.1.4 java version
If you are upgrading from JDeveloper 12.2.1.3 (which also required JDK 8), the transition is seamless. However, if you are coming from JDeveloper 12.1.3 (which supported JDK 7), you : A: Check that the WebLogic domain also uses JDK 8
To cut straight to the chase:
is unequivocally JDK 8 — specifically the 64-bit version of Oracle JDK 8u151 to 8u202. Using any higher Java release will break the IDE, the integrated WebLogic Server, or your ADF application compilation. While modern development demands newer Java features, legacy enterprise projects often remain on this stack for years. While modern development demands newer Java features, legacy
Oracle JDeveloper 12.2.1.4 is primarily certified and designed to run on Java SE Development Kit (JDK) 8 . This release is part of the Oracle Fusion Middleware 12c (12.2.1.4.0) family, which requires a specific 64-bit JDK for installation and operation. Core Java Certification