Java Virtual Machine(JVM) is an abstract machine that offers a runtime environment for Java byte-code execution. It is a specification that DESCRIBES how the Java Virtual Machine works. Oracle and other companies have helped with its adoption. JRE is the name of the program that implements it.

There are JVMs for a variety of hardware and software systems (so JVM is platform-dependent). It is a runtime instance that is created when the Java class is executed. The JVM is divided into three parts: specification, implementation, and instance.

Java Runtime Environment (JRE) is an acronym for Java Runtime Environment. It is the JVM implementation. The Java Runtime Environment (JRE) is a collection of software tools for creating Java applications. It's responsible for creating the runtime environment. It is the JVM implementation. It is a real THING. It comprises a collection of libraries as well as other files that JVM uses during execution.

The TERM JDK stands for Java DEVELOPMENT Kit. It's a software development environment for creating Java applets and applications. It is a real thing. It includes JRE as well as developer tools. JDK is an implementation of any of Oracle Corporation's Java PLATFORMS, as listed below:

• Java Platform Standard Edition
• Java Platform Enterprise Edition
• Java Platform Micro Edition