Contents
System Requirements
JDK Installation Instructions
Installation
of Self-Extracting Binary
Installation of RPM File
Java Plugin Browser Registration
Instructions
Java Web Start Installation Notes
Troubleshooting
System Requirements
See supported System
Configurations
for information about supported platforms, operating systems, desktop
managers, and browsers.
For issues, see the Troubleshooting
section below.
Installation Instructions
Installing the JDK automatically installs the Java Plugin and Java Web
Start. Note that the Java Plugin needs to be registered with the
browser. After installing the JDK, refer to:
Install formats - This
version of the JDK is available in two installation formats.
- Self-extracting Binary File - This file can be used
to install the JDK in a location chosen by the user. This one can be
installed by anyone (not only root users), and it can easily be
installed in any location. As long as you are not root user, it cannot
displace the system version of the Java platform suppled by Linux. To
use this file, see Installation of
Self-Extracting Binary below.
- RPM Packages - A rpm.bin file containing
RPM packages, installed with the rpm utility. Requires root
access to install.
RPM packages
are the recommended method for installation on Linux. To use this
bundle, see Installation of RPM File below.
Choose the install format that is most suitable to your needs.
Note: For any text on this page
containing the following notation, you must substitute the appropriate
JDK update version number for the notation.
<version>
For example, if you were downloading update 6_01, the following
command:
./jdk-6<version>-linux-i586.bin
would become:
./jdk-6u1-linux-i586.bin
Installation of Self-Extracting Binary
Use these instructions if you want to use the self-extracting binary
file to install the JDK. If you want to install RPM packages instead,
see Installation of RPM File.
1. Download
and check the download file size to ensure that you have
downloaded the full, uncorrupted software bundle.
You can download to any directory you choose; it
does not have to be the directory where you want to install the JDK.
Before you download the file, notice its byte size provided
on the download page on the web site. Once the download has completed,
compare that file size to the size of the downloaded file to make sure
they are equal.
2. Make sure
that execute permissions are set on the self-extracting
binary.
Run this command:
chmod +x jdk-6<version>-linux-i586.bin
3. Change
directory to the location where you would like the files to be
installed.
The next step installs the JDK into the current
directory.
4.
Run the self-extracting binary.
Execute the downloaded file, prepended by the path
to it. For example, if the file is in the current directory, prepend it
with "./" (necessary if "." is not in the PATH
environment variable):
./jdk-6<version>-linux-i586.bin
The binary code license is displayed, and you are prompted
to agree to its terms.
The JDK files are installed in a directory called jdk1.6.0_<version>
in the current directory. Follow this link to see its directory
structure. The JDK documentation is a separate download.
Note about Root Access:
Unbundling the software automatically creates a directory called jdk1.6.0_<version>.
Note that if you choose to install the JDK into system-wide location
such as /usr/local, you must first become root to gain the
necessary permissions. If you do not have root access, simply install
the JDK into your home directory, or a subdirectory that you have
permission to write to.
Note about Overwriting Files: If you unpack the
software in a directory that contains a subdirectory named jdk1.6.0_<version>,
the new software overwrites files of the same name in that jdk1.6.0_<version>
directory. Please be careful to rename the old directory if it contains
files you would like to keep.
Note about System Preferences: By default, the
installation script configures the system such that the backing store
for system preferences is created inside the JDK's installation
directory. If the JDK 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 the Preferences
API documentation for more information about preferences in the
Java platform.
Installation of RPM File
Use these instructions if you want to install JDK in the form
of RPM packages. If you want to use the self-extracting binary file
instead, see Installation of
Self-Extracting Binary.
1.
Download and check the file size.
You can download to any directory you choose.
Before you download the file, notice its byte size provided
on the download page on the web site. Once the download has completed,
compare that file size to the size of the downloaded file to make sure
they are equal.
2.
Become root by running the su command
and entering the super-user password.
3.
Extract and install the contents of the
downloaded file.
Change directory to where the downloaded file is
located and run these commands to first set the executable permissions
and then run the binary to extract and run the RPM file:
chmod a+x jdk-6<version>-linux-i586-rpm.bin
./jdk-6<version>-linux-i586-rpm.bin
Note that the initial "./" is required if you do
not have "." in your PATH environment variable.
The script displays a binary license agreement, which you
are asked to agree to before installation can proceed. Once you have
agreed to the license, the install script creates and runs the file jdk-6<version>-linux-i586.rpm
in the current directory.
NOTE - If instead you want to only extract the RPM
file but not install it, you can run the .bin file with the -x
argument. You do not need to be root to do this.
4. Delete
the bin and rpm file if you want to save
disk space.
5.
Exit the root shell.
The RPM packages creates two links /usr/java/latest and
/usr/java/default.
- The /usr/java/latest link will always point to the version
of Java that
Sun Microsystems considers the latest version. Subsequent
upgrades of
the packages will overwrite this value if it is not the latest version.
- By default, /usr/java/default points to /usr/java/latest.
However, if administrators change /usr/java/default to point to
another version of Java, subsequent package upgrades will be provided
by the administrators and cannot be overwritten.
When the JDK is installed, links to javac jar and javadoc are
also created apart from the JRE links. These links point to the
appropriate tool referenced by /usr/java/default. This allows the user
to easily run the default version of these Java tools.
A new service script, named jexec, is added to /etc/init.d. This script
allows users to directly execute any standalone JAR file that has an
execution permission set. This can be demonstrated using an example
from the JDK:
cd /usr/java/jdk1.6.0/demo/jfc/SwingSet2
chmod +x SwingSet2.jar
./SwingSet2.jar
Java Plugin Browser Registration Instructions
You must register the Java Plugin product with
Netscape or Mozilla for the Plugin to work. Click on the following link
to see the instructions for manual registration. Note that for SuSE the
8.1 or higher version of Mozilla must be used, and for non-SuSE Linux,
the version of Mozilla must be 1.1 or higher. Please follow these
instructions:
Manual Registration
Instructions
Also see documentation
on the Java Plugin component.
Java Web Start Installation Notes
This JDK release includes Java Web Start; it is installed
automatically with the JDK. But note the following:
- Compatibility: The release of Java Web Start
that comes with this JDK/JRE can be run on SDK/JRE 1.2.2 or later. It
will not work with SDK/JRE 1.1.x or earlier.
- Upgrading from Previous Versions: If you have a
previous release of Java Web Start, do not uninstall it. Uninstalling
it will cause the download cache to be cleared, and all previously
installed Java Web Start applications will have to be downloaded again.
This new release will overwrite previous installations and
automatically update browsers to use this new release. The
configuration files and program files folder used by Java Web Start
have not changed, so all your settings will remain intact after the
upgrade.
- Using Java Web Start with Netscape 6.x/7.x: For
Netscape 6.x/7.x users, setup the Java Web Start MIME type (JNLP) in
the Edit->Preferences->Navigator->Helper Applications section.
The file extension is
jnlp; MIME Type is application/x-java-jnlp-file.
It should be handled by the javaws executable file in
your Java Web Start directory. Also note that, due to a problem with
the JavaScript in Netscape 6.x/7.x, you must use the non-JavaScript
version of the demos page
- To print on Linux, the /usr/sbin/lpc utility must
be installed. This is a standard Linux utility. On RedHat 7.1, for
example, this utility is in the "LPRng-3.7.4-22 RPM" package.
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