Note: Trying to install the J2SE 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."
Note: For any text on this page containing the following notation, you must substitute the appropriate update version number for the notation.
For example, if you are downloading the installer for update 1.5.0_01, the following file name:
1. If choosing "Windows Offline Installation", download and check the download file size
After clicking the JRE "Download" link for the "Windows Offline Installation", a dialog box pops up -- choose the following option:
This file contains everything needed to install the J2SE Runtime Environment, including the installer and character conversion classes and support for locales other than the US English locale.
2. Run the installer
Notes - (1) You must have administrative permissions in order to install the J2SE Runtime Environment on Microsoft Windows 2000 and XP. (2) For users doing this installation on non-Western 32-bit machines, select "Custom" for Setup Type. Then, in Custom Setup under feature 2 ("Support for Additional Languages"), select "This feature will be installed on local hard drive."
The download page provides the following two choices of installation. Continue based on your choice.
a. Windows Online Installation - After clicking the "Download" link for the JRE, a dialog box pops up -- choose the following option:
This option starts the installation process by downloading and executing the file
jre-1_5_0_<version>-windows-i586-iftw.exe, which prompts you through the steps to download and install only the features you request. (The letters "
iftw" mean "install from the web".)
b. Windows Offline Installation - Run the file downloaded in step 1 by double-clicking on the installer's icon. Then follow the instructions the installer provides. When done with the installation, you can delete the downloaded file to recover disk space.
With either choice, the installer may ask you to reboot your computer
3. If you want to run Netscape 7.x or Mozilla 1.x with Java Plug-in, do this:
jnlp; MIME Type is
application/x-java-jnlp-file. It should be handled by the
Silent Install - To install the J2SE Runtime Environment non-interactively, which is useful for installing on multiple machines, use the following instructions:
JRE Deployment for System Administrators - The JRE can be distributed to intranet users by hosting the .msi file on an internal website and asking users to launch the installer through msiexec. The other option is to install the JRE through Active Directory. The instructions for these are available in the "Intranet Deployment" section of JRE Intranet Deployment.
Launch Applications Directly - If you want to use the Invocation API to launch an application directly rather than using the Java application launcher, please see Location of VM Library Files (jvm.dll).