This page describes JRE for Linux system requirements and gives installation instructions for several JRE-Linux combinations.
This page contains these topics:
See "JDK 8 and JRE 8 Installation Start Here" for general information about installing JDK 8 and JRE 8.
For information on enhancements to JDK 8 that relate to the installer, see "Installer Enhancements in JDK 8".
See http://www.oracle.com/technetwork/java/javase/certconfig-2095354.html for information about supported platforms, operating systems, and browsers.
On a 64-bit system, you can download either the 64-bit or the 32-bit version of the Java platform. However, if you are using a 32-bit browser and you want to use the plugin, then you need to install the 32-bit version of the Java platform. To determine which version of Firefox you are running, launch the application, and select the menu item Help -> About Mozilla Firefox. At the bottom of the window is a version string line that contains either "Linux i686" (32-bit) or "Linux x86_64" (64-bit). To setup the Java plugin, see "Manual Installation and Registration of Java Plugin for Linux".
This topic contains these topics:
"Installation of the 64-bit JRE on RPM-based Linux Platforms"
"Installation of the 32-bit JRE on RPM-based Linux Platforms"
For instructions containing the notation version, substitute the appropriate JRE update version number. For example, if you are installing update JRE 8 update release 2, the following string representing the name of the bundle:
jre-8uversion-linux-i586.tar.gz
becomes:
jre-8u2-linux-i586.tar.gz
Note that, as in the preceding example, the version number is sometimes preceded with the letter u, for example, 8u2, and sometimes it is preceded with an underbar, for example, jre1.8.0_02.
The following table lists the options and instructions for downloading the JRE 8 release for a Linux platform.
| Download File and Instructions | Architecture | Who Can Install |
|---|---|---|
jre-8uversion-linux-x64.tar.gz"Installation of the 64-bit JRE on Linux Platforms" |
64-bit | anyone |
jre-8uversion-linux-i586.tar.gz"Installation of the 32-bit JRE on Linux Platforms" |
32-bit | anyone |
jre-8uversion-linux-x64.rpm"Installation of the 64-bit JRE on RPM-based Linux Platforms" |
64-bit RPM-based Linux | root |
jre-8uversion-linux-i586.rpm"Installation of the 32-bit JRE on RPM-based Linux Platforms" |
32-bit RPM-based Linux | root |
JDK 7u6 and later releases include JavaFX SDK (version 2.2 or later). The JavaFX SDK and Runtime are installed and integrated into the standard JDK directory structure.
For information about how to work with JavaFX, see http://docs.oracle.com/javase/8/javase-clienttechnologies.htm.
This procedure installs the Java Runtime Environment (JRE) for 64-bit Linux, using an archive binary file (.tar.gz).
These instructions use the following file:
jre-8uversion-linux-x64.tar.gz
Download the file.
Before the file can be downloaded, you must accept the license agreement. The archive binary can be installed by anyone (not only root users), in any location that you can write to. However, only the root user can install the JDK into the system location.
Change directory to the location where you would like the JDK to be installed, then move the .tar.gz archive binary to the current directory.
Unpack the tarball and install the JRE.
% tar zxvf jre-8uversion-linux-x64.tar.gz
The Java Development Kit files are installed in a directory called jdk1.8.0_version in the current directory.
Delete the .tar.gz file if you want to save disk space.
This procedure installs the Java Runtime Environment (JRE) for 64-bit RPM-based Linux platforms, such as Red Hat and SuSE, using an RPM binary file (.rpm) in the system location. You must be root to perform this installation.
These instructions use the following file:
jre-8uversion-linux-x64.rpm
Download the file.
Before the file can be downloaded, you must accept the license agreement.
Become root by running su and entering the super-user password.
Uninstall any earlier installations of the JDK packages.
# rpm -e package_name
Install the package.
# rpm -ivh jre-8uversion-linux-x64.rpm
To upgrade a package:
# rpm -Uvh jre-8uversion-linux-x64.rpm
Delete the .rpm file if you want to save disk space.
Exit the root shell.
There is no need to reboot.
This procedure installs the Java Runtime Environment (JRE) for 32-bit Linux, using an archive binary file (.tar.gz).
These instructions use the following file:
jre-8uversion-linux-i586.tar.gz
Download the file.
Before the file can be downloaded, you must accept the license agreement. The archive binary can be installed by anyone (not only root users), in any location that you can write to. However, only the root user can install the JRE into the system location.
Change directory to the location where you would like the JRE to be installed, then move the .tar.gz archive binary to the current directory.
Unpack the tarball and install the JRE.
% tar zxvf jre-8uversion-linux-i586.tar.gz
The JRE files are installed in a directory called jre1.8.0_version in the current directory.
Delete the .tar.gz file if you want to save disk space.
This procedure installs the Java Runtime Environment (JRE) for 32-bit RPM-based Linux platforms, such as Red Hat and SuSE, using an RPM binary file (.rpm) in the system location. You must be root to perform this installation.
These instructions use the following file:
jre-8uversion-linux-i586.rpm
Download the file.
Before the file can be downloaded, you must accept the license agreement.
Become root by running su and entering the super-user password.
Uninstall any earlier installations of the JRE packages.
# rpm -e package_name
Install the package.
# rpm -ivh jre-8uversion-linux-i586.rpm
To upgrade a package:
# rpm -Uvh jre-8uversion-linux-i586.rpm
Exit the root shell.
There is no need to reboot.
Delete the .rpm file if you want to save disk space.
Since JDK version 8, the JRE RPMs are signed with OL keys. Installation of these RPMs on Linux distributions other than OL gives a warning message indicating that security validation of the package fails. 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:
jdk-8u281-ea-bin-b03-linux-amd64-20_oct_2020.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
Download the key file from https://yum.oracle.com/RPM-GPG-KEY-oracle-ol7 using the following command:
wget https://yum.oracle.com/RPM-GPG-KEY-oracle-ol7
Install the key using the following command:
sudo rpm --import RPM-GPG-KEY-oracle-ol7
|
Note: Public key installation needs to be done only once. The key installation is persistent across reboots. |
This topic describes general installation topics.
Installing the software automatically creates a directory called jre1.8.0_version. Note that if you choose to install the Java SE Runtime Environment into system-wide location such as /usr/jre, you must first become root to gain the necessary permissions. If you do not have root access, simply install the Java SE Runtime Environment into your home directory, or a subdirectory that you have permission to write to.
If you install the software in a directory that contains a subdirectory named jre1.8.0_version, the new software overwrites files of the same name in that jre1.8.0_version directory. Rename the old directory if it contains files you want to keep.
By default, the installation script configures the system such that the backing store for system preferences is created inside the JRE's installation directory. If the JRE is installed on a network-mounted drive, it and the system preferences can be exported for sharing with Java runtime environments on other machines.
See http://docs.oracle.com/javase/8/docs/technotes/guides/preferences/index.html for more information about preferences in the Java platform.
