The type of installation depends on your requirement and the platform that you choose to install.
Table 1-1 Installation Requirements and Related Tasks
| Requirement | Tasks |
|---|---|
| Run Java programs but not develop them | Download and install the JRE for your platform |
| Develop Java applications | Download and install the Java Development Kit (JDK) for your platform. The JDK includes the JRE, so you do not have to download both separately. |
| Use JRE on a server but do not want the ability to run rich internet applications (RIAs) | Download the Java SE Server JRE for your platform |
Version-String Format
To understand the version-string scheme that is used to distinguish various JDK and JRE releases, see Version-String Format.
Installation
JDK, JRE, and Server JRE can be installed on the following platforms:
You can download JDK and JRE from Java SE Development Kit 9 Downloads page.
For supported processors and browsers, see Oracle JDK and JRE Certified System Configurations.
Oracle Solaris
Installation of JDK and JRE on Oracle Solaris: Instructions include installation from Image Packaging System (IPS) and Archive binaries.
Installing Server JRE 9 on Oracle Solaris: Instructions include steps to install Server JRE.
Microsoft Windows
Installation of the JDK and the JRE on Microsoft Windows Platforms: Instructions include steps to install JDK and JRE on 64-bit Microsoft Windows operating systems.
Linux
Installation of the JDK and JRE on Linux Platforms: Instructions include installation from Archive binaries and Red Hat Package Manager (RPM).
Installation of Server JRE 9 on Linux: Instructions include steps to install Server JRE on Linux.
Manual Installation and Registration of the Java Plug-in on Linux: Instructions include steps to manually install the JRE plug-in, which is required to run Java applets in a browser. This procedure does not apply to Server JRE installation.
macOS
The installation of JRE 9 and JDK 9 requires macOS 10.10 or later.
Installation of the JDK and the JRE on macOS: Instructions include steps to install JDK and JRE on macOS platform.
Directory Structure
To learn about the files and directories that are created after JDK and JRE installation, see Installed Directory Structure of JDK and JRE.