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System Requirements
The Java 2 Runtime Environment is
supported on Microsoft Windows 98 (1st or 2nd edition), Windows NT 4.0 with
with Service Pack 5 or later, Windows ME, Windows XP, Windows 2000 with
Service Pack 2 or later,
running on Intel hardware. In non-English locales, the only edition
of Microsoft Windows 2000 tested with this release is the Professional edition.
Trying to install the Java 2 Runtime Environment
on a non-supported
version of Microsoft Windows or on a machine that doesn't have a
sufficiently up-to-date Service Pack will cause the installer to
generate this warning: "We recommend that you do not install this
Java Platform for the following reasons: This Java Platform
does not support the operating system or operating-system service
pack on this machine."
A Pentium 166MHz or faster processor with at least 32 megabytes of
physical RAM is required to run graphically based applications.
Forty-eight megabytes of RAM is recommended for applets
running within a browser using the Java Plug-in product. Running with
less memory may cause disk swapping which has a severe effect on
performance. Very large programs may require more RAM for
adequate performance.
You should have 40 megabytes of free disk space before attempting to
install the Java 2 Runtime Environment.
If you have previously installed another version of the
Java 2 Runtime Environment or Java 2 SDK, uninstall it.
Use the Microsoft Windows
Add/Remove Programs utility, accessible from
the Control Panel (Start --> Settings --> Control Panel).
Installation Instructions
If using Internet Explorer, you have both options below; if using
Netscape Navigator, you have only
the "Save As" option below.
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Open - This enables you to install the Java 2 Runtime Environment
without leaving a compressed file on your hard disk.
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Save As - This saves the downloaded file without
installing it. It will be saved at C:\ by default. Check
that you have downloaded the entire file by comparing
the size of the file you downloaded with the expected size shown
on the download page:
j2re-1_4_1-windows-i586-i.exe
is the Microsoft Windows Java 2 Runtime Environment international version
for all locales.
j2re-1_4_1-windows-i586.exe
is the Microsoft Windows Java 2 Runtime Environment for U.S. English only.
The larger international version of the Java 2 Runtime
Environment contains character conversion classes and
support for locales other than the US English locale. Use this
version of the Java 2 Runtime Environment if you will be
running applications and applets that require a non-US-English
locale.
After downloading this file, you can double-click on its icon to run the
installer. Note -- you must have administrative permissions in order to
install the Java 2 Runtime Environment on Microsoft Windows 2000 and XP.
Follow the instructions the installer provides. When done with
the installation, to recover more disk space, delete the bundle you
downloaded.
The installation process will also install the
Java Plug-in
product and Java Web Start
product will automatically be installed. Look for a Java Web Start
icon on your desktop. There will also be an entry for Java Web Start
in the Start --> Programs menu.
If you run into any problems during the installation, please check
the troubleshooting
section of the SDK installation instructions.
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