Installation of the JDK on Linux Platforms

General Notes About Installing the JDK on Linux Platforms from Archive Files

This topic describes general information about installing JDK 11 on Linux platforms.

Installing the JDK automatically creates a directory called jdk–feature.interim.update.patch where feature (11),interim, update, and patch represent corresponding values of version information.

Root Access

If you install JDK in a specific location such as /opt, you must log in with root credentials to gain the necessary permissions. If you do not have the root access, either install the JDK in your home directory or a sub directory for which you have the write permissions.

Overwriting Files

If you install the software in a directory that contains a sub directory named jdk–11.interim.update.patch, the new software overwrites files of the same name in that directory. Ensure that you rename the old directory if it contains files that you would like to keep.

System Preferences

Installing the JDK from archive files doesn't configure the backing store for the system node of Java Preferences API (java.util.prefs Java package). If this functionality of the JDK is required, you need to manually configure it by making sure either /etc/.java/.systemPrefs or jdk–11.interim.update.patch/.systemPrefs directory exists.

General Notes About Installing the JDK on Linux Platforms from RPM packages

This topic describes general information about installing JDK 11 from RPM packages on Linux platforms.

You can install only one version of JDK of the same feature release. If you try to install the newer version of the same feature release while the older version exists, the installer uninstalls the older version and installs the new version. For example, you can't install jdk-11 and jdk-11.0.1 simultaneously. If you attempt to install jdk-11.0.1 after jdk-11 is installed, the installer uninstalls jdk-11 and installs jdk-11.0.1.

All versions of JDK of the same feature release are installed in /usr/lib/jvm/jdk-11-oracle-<ARCH> directory, where <ARCH> equals x64 or aarch64. Additionally /usr/java/jdk-11 symbolic link pointing to the installation directory is created for backward compatibility.

Note:

If you install an older version of a JDK when the newer version of the same feature family already exists, an error is displayed, prompting you to uninstall a newer JDK version if an older version has to be installed.

Root Access

You must log in with root credentials to install or update JDK.

System Preferences

By default, the installation script configures the system such that the backing store for the system node of Java Preferences API (java.util.prefs Java package) is configured in /etc/.java/.systemPrefs directory.

System Integration

The JDK installation is integrated with the alternatives framework. After installation, the alternatives framework is updated to reflect the binaries from the recently installed JDK. Java commands such as java, javac, javadoc, and javap can be called from the command line.

Using the java -version command, you can confirm the default (recently installed) JDK version.

In addition, you can check which specific RPM package provides the java files:

$ rpm -q --whatprovides java

System Requirements for Installing JDK on Linux Platforms

See Oracle JDK Certified Systems Configurations for information about supported platforms, operating systems, and browsers.

JDK Installation Instruction Notation for Linux Platforms

JDK installers now support only one version of any Java feature release. You can't install multiple versions of the same feature release.

For example, you can't install jdk-11 and jdk-11.0.1 simultaneously. If you attempt to install jdk-11.0.1 after jdk-11 is installed, the installer uninstalls jdk-11 and installs jdk-11.0.1.

Note:

If you install an older version of a JDK when the newer version of the same feature family already exists, an error is displayed, prompting you to uninstall a newer JDK version if an older version has to be installed.

Linux x64 systems: jdk-<FEATURE>_linux-x64_bin.tar.gz

This string becomes:

jdk-11_linux-x64_bin.tar.gz

Linux aarch64 (64-bit ARM) systems: jdk-<FEATURE>_linux-aarch64_bin.tar.gz

This string becomes:

jdk-11_linux-aarch64_bin.tar.gz

Installing the JDK on Linux from Archive Files and RPM Packages

You can install the Java Development Kit (JDK) on a Linux platform from archive files or from Red Hat Package Manager (RPM) packages.

Installation can be performed by using one of the following processes:

From archive files (.tar.gz): This allows you to install a private version of the JDK for the current user into any location, without affecting other JDK installations. However, it may involve manual steps to get some of the features to work. See the following table for the options available for downloading and installing the JDK from archive files. The bundles are available for Linux x64 and Linux aarch64 (64-bit ARM) systems. Install the required bundle.
From RPM packages (.rpm): This allows you to perform a systemwide installation of the JDK for all users, and requires root access. See the following table for the options available for downloading and installing the JDK from Linux x64 and Linux aarch64 (64-bit ARM) RPM packages.

Downloading the JDK Installer

Access Java SE Downloads page and click Accept License Agreement. Under the Download menu, click the Download link corresponding your requirement.

The following table lists the options and instructions for downloading and installing the JDK 11 release on a Linux platform:

Download File	Instructions	Architecture (CPU Type)	Who Can Install
For Linux x64 systems: `jdk-<FEATURE>_linux-x64.tar.gz`	Installing the 64-Bit JDK on Linux Platforms	Intel - 64-bit	Anyone
For Linux aarch64 (64-bit ARM) systems: `jdk-<FEATURE>_linux-aarch64.tar.gz`	Installing the 64-Bit JDK on Linux Platforms	ARM - 64-bit	Anyone
For Linux x64 systems: `jdk-<FEATURE>_linux-x64.rpm`	Installing the 64-Bit JDK on RPM-Based Linux Platforms	Intel - 64-bit RPM-based Linux	Root
For Linux aarch64 (64-bit ARM) systems: `jdk-<FEATURE>_linux-aarch64.rpm`	Installing the 64-Bit JDK on RPM-Based Linux Platforms	ARM - 64-bit RPM-based Linux	Root

Installing the 64-Bit JDK on Linux Platforms

You can install the JDK for 64-bit Linux from an archive file (.tar.gz). The .tar.gz archive file (also called a tarball) is a file that can be uncompressed and extracted in a single step.

To install the 64-bit JDK on a Linux platform:

Download the required file:
- For Linux x64 systems: jdk-<FEATURE>_linux-x64_bin.tar.gz
- For Linux aarch64 (64-bit ARM) systems: jdk-<FEATURE>_linux-aarch64_bin.tar.gz
Before you download a file, you must accept the license agreement. Anyone (not only root users) can install the archive file in any location having write access.
Change the directory to the location where you want to install the JDK, then move the .tar.gz archive file to the current directory.
Unpack the tarball and install the downloaded JDK:

$ tar zxvf jdk-<FEATURE>_linux-x64_bin.tar.gz

OR

$ tar zxvf jdk-<FEATURE>_linux-aarch64_bin.tar.gz

The Java Development Kit files are installed in a directory called jdk-<FEATURE>.
Delete the .tar.gz file if you want to save disk space.

Installing the 64-Bit JDK on RPM-Based Linux Platforms

You can install the JDK on 64-bit RPM-based Linux platforms, such as Red Hat and SuSE by using a downloadable RPM package file (.rpm) in the system location.

Note:

You can install the JDK using a downloadable RPM package file on an OL system too, but the preferred way to install the JDK on OL systems is from Oracle Linux RPM repositories.

Ensure that you have the root user access. You can do this by running the command su and entering the superuser password.

To install the 64-bit JDK on an RPM-based Linux platform:

Download the required file:
- For x64 systems: jdk-11.interim.update.patch_linux-x64_bin.rpm. For example, jdk-11_linux-x64_bin.rpm
- For aarch64 (64-bit ARM) systems: jdk-11.interim.update.patch_linux-aarch64_bin.rpm. For example, jdk-11_linux-aarch64_bin.rpm
Before you download a file, you must accept the license agreement.
Install the required package using the following command:

$ sudo rpm -ivh jdk-11_linux-x64_bin.rpm

OR

$ sudo rpm -ivh jdk-11_linux-aarch64_bin.rpm

Upgrade the required package using the following command:

$ sudo rpm -Uvh jdk-11_linux-x64_bin.rpm

OR

$ sudo rpm -Uvh jdk-11_linux-aarch64_bin.rpm

Note:
JDK 11 can coexist with other feature releases of JDK. For each feature release, a separate directory is created, the default directory being /usr/lib/jvm/jdk-<FEATURE>-oracle-<ARCH>. For example, JDK 11 releases for x64 will be installed in /usr/lib/jvm/jdk-11-oracle-x64 directory.
Delete the .rpm file if you want to save disk space.
It is not required to reboot.