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Showing content from https://docs.oracle.com/en/java/javase/17/install/installation-jdk-linux-platforms.html below:

Installation of the JDK on Linux Platforms

This topic describes the installation procedures of the JDK on the Linux platform, along with the system requirements.

This topic describes general information about installing JDK

on Linux platforms.

Installing the JDK automatically creates a directory called jdk–feature.interim.update.patch where feature (17),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–17.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–17.interim.update.patch/.systemPrefs directory exists.

This topic describes general information about installing JDK 17 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-17 and jdk-17.0.1 simultaneously. If you attempt to install jdk-17.0.1 after jdk-17 is installed, the installer uninstalls jdk-17 and installs jdk-17.0.1.

Every update release will be installed in a separate directory, such as /usr/lib/jvm/jdk-<VERSION>-oracle-<ARCH> directory, where <VERSION> is a full version string (example: 23, 23.0.1), <ARCH> equals x64 or aarch64. Additionally /usr/java/jdk-17 symbolic link that is pointing to the installation directory is created for backward compatibility.

Note:

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

files:

$ rpm -q --whatprovides java

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

and

simultaneously. If you attempt to install

after

is installed, the installer uninstalls

and installs

.

Note:

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

This string becomes:

jdk-17_linux-x64_bin.tar.gz

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

This string becomes:

jdk-17_linux-aarch64_bin.tar.gz

You can install the JDK on a Linux platform from archive files, debian packages, downloadable Red Hat Package Manager (RPM) packages files, or RPM packages from Oracle Linux (OL) repositories.

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 Debian packages (.deb): This allows you to perform a system-wide JDK installation on Debian-based Linux platforms, and requires root access.

• From downloadable RPM packages (.rpm): This allows you to perform a system-wide JDK installation on RPM-based Linux platforms 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.

• From Oracle Linux repositories: This allows you to perform a system-wide JDK installation on OL platforms starting from OL7 for all users, and requires root access. JDK RPM packages in Oracle Linux RPM repositories are available for x64 and aarch64 (64-bit ARM) OL platforms. Explicit download of JDK RPM packages is not required, the package manager will do it automatically for you.

JDK RPM packages for Generic Linux platforms and Oracle Linux platforms differ. The following table lists the differences:

Table 3-1 Difference between Generic Linux and OL platforms

JDK image is split into two packages: jdk-17-headless and jdk-17-headful.

• jdk-17-headless is a headless Java Runtime for running non-GUI applications.
• jdk-17-headful is headful Java Runtime and Development Tools for developing and running all types of applications.

jdk-17-headful package requires jdk-17-headless package. When these packages are installed together, they provide the same functionality as the jdk-17 package for Generic Linux Platforms.

jdk-17-headless package registers java group with the alternatives framework.

jdk-17-headful package registers javac group with the alternatives framework.

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 17 release on a Linux platform:

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:

1. Download the required file:
   • For Linux x64 systems: jdk-17.interim.update.patch_linux-x64_bin.tar.gz. For example jdk-17_linux-x64_bin.tar.gz
   • For Linux aarch64 (64-bit ARM) systems: jdk-17.interim.update.patch_linux-aarch64_bin.tar.gz. For example, jdk-17_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.

2. Change the directory to the location where you want to install the JDK, then move the .tar.gz archive file to the current directory.
3. Unpack the tarball and install the downloaded JDK:

   $ tar zxvf jdk-17_linux-x64_bin.tar.gz

   OR

   $ tar zxvf jdk-17_linux-aarch64_bin.tar.gz

   The Java Development Kit files are installed in a directory named jdk-17.interim.update.patch.

4. Delete the .tar.gz file if you want to save disk space.

You can install the JDK Debian package for 64-bit Linux from the (.deb) file.

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

1. Download the required file:

   jdk-17.interim.update.patch_linux-x64_bin.deb. For example jdk-17_linux-x64_bin.deb

   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.

2. Install the package using the following command:

   $ sudo dpkg -i jdk-17_linux-x64_bin.deb

   The Java Development Kit files are installed into /usr/lib/jvm/jdk-<VERSION>-oracle-<ARCH> directory. For example, JDK 17 releases for x64 will be installed in /usr/lib/jvm/jdk-17-oracle-x64 directory.

3. Delete the .deb file if you want to save disk space.

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.

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:

1. Download the required file:
   • For x64 systems: jdk-17.interim.update.patch_linux-x64_bin.rpm. For example, jdk-17_linux-x64_bin.rpm
   • For aarch64 (64-bit ARM) systems: jdk-17.interim.update.patch_linux-aarch64_bin.rpm. For example, jdk-17_linux-aarch64_bin.rpm

   Before you download a file, you must accept the license agreement.

2. Install the required package using the following command:

   $ sudo rpm -ivh jdk-17_linux-x64_bin.rpm

   OR

   $ sudo rpm -ivh jdk-17_linux-aarch64_bin.rpm

   Upgrade the required package using the following command:

   $ sudo rpm -Uvh jdk-17_linux-x64_bin.rpm

   OR

   $ sudo rpm -Uvh jdk-17_linux-aarch64_bin.rpm

   Note:

   JDK

   17

   can coexist with other feature releases of JDK. For each version release, a separate directory is created, the default directory being

   /usr/lib/jvm/jdk-<VERSION>-oracle-<ARCH>

   . For example, JDK

   17

   releases for x64 will be installed in

   /usr/lib/jvm/jdk-17-oracle-x64

   directory.

3. Delete the .rpm file if you want to save disk space.

   It is not required to reboot.

From JDK version 8, the JDK RPMs are signed with OL keys. RPMs installed on Linux distributions other than OL may display a warning message indicating that security validation of the package failed. This indicates that the public key used to sign this RPM needs to be installed in the system.

A sample warning message and the public key installation steps are as follows:

Sample Warning Message

jdk-17.0.11_linux-aarch64_bin.rpm: Header V3 RSA/SHA256 Signature, key
        ID ec551f03: NOKEY

Installation Steps

1. Download the key file from https://yum.oracle.com/RPM-GPG-KEY-oracle-ol9 using the following command:

   wget
       https://yum.oracle.com/RPM-GPG-KEY-oracle-ol9

2. Install the key using the following command:

   sudo rpm --import RPM-GPG-KEY-oracle-ol9

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