JVM
The Java Virtual Machine (JVM) is a runtime environment that executes Java bytecode, enabling Java programs to run on any device or operating system that has a JVM implementation. It provides key features such as memory management, garbage collection, and security, while supporting multiple programming languages beyond Java, like Kotlin and Scala, through bytecode compilation.
Developers should learn and use the JVM for building cross-platform applications, especially in enterprise environments where reliability, scalability, and portability are critical. It is essential for working with Java-based systems, big data tools like Apache Spark, and Android development (via the Android Runtime, which is JVM-based), making it a foundational skill for backend and mobile developers.