Java is a class-based, statically typed, object-oriented programming language created by James Gosling at Sun Microsystems in 1995 and now stewarded through the Java Community Process. The language compiles to bytecode that runs on the Java Virtual Machine (JVM), which provides garbage collection, just-in-time compilation, and a portable execution model across operating systems and architectures. OpenJDK is the canonical reference implementation, released under GPL-2.0 with the Classpath Exception so that applications linked against the runtime are not encumbered by the GPL.
The JVM has evolved into a polyglot platform hosting languages like Kotlin, Scala, Groovy, and Clojure, and the broader Java ecosystem is one of the largest in software, spanning Maven Central, application servers, build tools, and decades of enterprise libraries. For cloud-native workloads, GraalVM enables ahead-of-time compilation into self-contained native images with fast startup and reduced memory footprint, which has reshaped how Java is packaged for containers and Kubernetes. Frameworks such as Quarkus, Micronaut, and Spring Boot lean into this model, offering reactive runtimes, build-time dependency injection, and first-class GraalVM native-image support to compete with Go and Node.js on cold-start and density.
Java is a sprawling ecosystem that no single profile can fully capture; this entry exists so that cloud-native videos referencing Java, the JVM, or OpenJDK have a canonical hub to link back to.
