JVM: It provides a platform-independent way of executing Java source code.As you can see, JVM is one of the subdirectories under JRE. It contains class libraries, JVM, and other supporting files. JRE: It is a software bundle that allows Java programs to run.In other words, JRE is one of the subdirectories under JDK.
It contains tools required to write Java programs, and JRE to execute them.
JDK: It is a software development kit. Some people want to know the difference between the three items. The full form of JDK is Java Development Kit, the full form of JRE is Java Runtime Environment, and the full form of JVM is Java Virtual Machine. Setx -m JAVA_HOME "C:\Program Files\Java\jdk-11.0.Do you want to know how to download and install Java on a PC? This post from MiniTool Partition Wizard introduces the differences among JDK, JRE, and JVM and shows you how to get Java 32 bit & 64 bit downloads. Open Command Prompt window under administrator privilege and type the following command: If not, creating one is free.Run the downloaded file, and you will see the JDK 11 setup program appears: Just click Next twice to proceed installation with the defaults.Note that Oracle JDK 11 does not update system environment variables, so you have to manually update PATH and/or JAVA_HOME after installation. Note that you must have an Oracle account to be able to download JDK 11 installer. Oracle JDK 11 comes with installers for Linux (rpm and deb), macOS (dmg), Windows (exe) and archive files (tar.gz and zip).For Windows, I recommend to download the file jdk-11.0.7_windows-圆4_bin.exe. According to Oracle, JDK 11 will be supported (commercial support) until September 2026.Head to Java SE Development Kit 11 Downloads page and choose the download file appropriate to your operating system. 
Download and Install Oracle JDK 11Oracle JDK 11 is the first LTS (Long Term Support) Java Development Kit since Oracle changed Java release cadence to every 6 months. You know, Oracle released Java 11 builds under two different licenses: Oracle JDK (commercial build with Oracle Technology Network license) and OpenJDK (open source build with GNU General Public license). In this post, I will guide you to setup Java 11 on Windows operating system by downloading and installing Java Development Kit (JDK) version 11 from Oracle.
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