You also can download the JRE separately from the JDK, and you may choose from a variety of JVMs. We'll dig a lot deeper into how these components work together in the discussion that follows.įrom an installation perspective, anytime you download a JDK, it will include a version-compatible JRE, and that JRE will include a default JVM. The JRE is mainly a container for those other components, and is responsible for orchestrating their activities.The JVM is responsible for ensuring Java applications have the resources they need to run and perform well in your device or cloud environment.The class loader is responsible for correctly loading classes and connecting them with the core Java class libraries.As the runtime environment for Java, the JRE contains the Java class libraries, the Java class loader, and the Java virtual machine. Practically speaking, a runtime environment is a piece of software that is designed to run other software. I've previously introduced the JDK and JVM. In this quick overview, you'll learn about the JRE, which is the runtime environment for Java. They all work together to let developers build and run Java programs.
Together, the Java Development Kit (JDK), the Java Virtual Machine (JVM), and the Java Runtime Environment (JRE) form a powerful trifecta of Java and Jakarta EE platform components for developing and running Java applications.
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