Comparison between JDK, JRE and JVM1 min read

This post contains the difference between JDK, JRE, and JVM. Let’s understand the difference between them first.
JVM: Java Virtual Machine
JDK: Java Development Kit
JRE: Java Runtime Environment

Comparison between JDK, JRE, and JVM

JDK

It stands for Java Development Kit. It is the tool necessary to compile, document and package Java programs. It contains JRE + development tools and is an implementation of any one of the following Java Platforms released by Oracle:

  1. Standard Edition Java Platform
  2. Enterprise Edition Java Platform
  3. Micro Edition Java Platform

JRE

It stands for Java Runtime Environment. JRE refers to a runtime environment in which Java bytecode can be executed and used for developing java applications with set of libraries.

It’s an implementation of the JVM and is physically exists.

JVM

JVM stands for Java Virtual Machine, which is an abstract machine that provides a runtime environment to run Java programs. JVM is the specification that must be implemented in the computer system.

There are three notations in JVM:

  • Specification
  • Implementation
  • Runtime Instance.

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