The OpenJDK Quality Group is promoting the testing of FOSS projects with OpenJDK builds as a way to improve the overall quality of the release.
The Security Manager, a legacy feature designed to enforce the principle of least privilege, is being retired due to its complexity, limited adoption, and maintenance costs.
In JDK 24, the Security Manager will be effectively disabled, and the Security Manager API will no longer have any operational effect.
Developers using older Java versions should transition to alternative sandboxing and API interception mechanisms.