OpenJDK
OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). It provides the core libraries, Java Virtual Machine (JVM), compiler, and tools necessary to develop and run Java applications. As the reference implementation for Java SE, it is widely used in production environments and serves as the basis for many commercial Java distributions.
Developers should learn and use OpenJDK when building or deploying Java applications that require a reliable, open-source, and community-supported Java runtime. It is essential for environments prioritizing cost-effectiveness, transparency, and compatibility with the latest Java specifications, such as enterprise servers, cloud-native applications, and development tools. Using OpenJDK ensures adherence to Java standards and facilitates contributions to the Java ecosystem.