The JRE is the on-disk software component that takes your compiled Java code (the code is compiled with the JDK), combines it with the required libraries, and starts the JVM to execute it.

It also provides a platform-independent runtime environment called the Java Virtual Machine (JVM), which allows Java code to run on any platform that supports the JVM.

The JRE is the on-disk part of Java that creates the JVM and loads programs into them. The JDK provides the tools necessary to write Java programs that can be executed and run by the JVM and JRE.

The Java Development Kit (JDK) is a software package that makes developing Java applications easier. Learn how the JDK drives the software development process.

With JDK 21, Java is entering a new era of efficiency and security, making it a compelling choice for enterprises building scalable, secure applications.

The JDK, along with the Java Virtual Machine (JVM) and the JRE, can be used by developers to program and run Java applications. In order for a software program to execute code, it needs a runtime ...