Installation Notes

Java 2 Runtime Environment, Standard Edition
Version 1.3.1
Microsoft Windows

System Requirements

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 acodeempting to install the Java 2 Runtime Environment.

Installation Instructions

Note: For any lines on this page containing the following notation, you must substitute the appropriate update version number for the notation. <version number> For example, if you are downloading the installer for update 1.3.1_01, the following file name:
j2re-1_3_1_<version number>-win.exe
would become:
  • Open - This enables you to install the Java 2 Runtime Environment without leaving a compressed file on your hard disk.
  • 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:
  • j2re-1_3_1_<version number>-win-i.exe is the Win32 Java 2 Runtime Environment international version for all locales.

    j2re-1_3_1_<version number>-win.exe is the Win32 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, double-click on the file icon to run the installer. Follow the instructions the installer provides. When done with the installation, to recover more disk space, delete the bundle you downloaded.