Installation Instructions

Note: Before starting installation on Windows NT, 2000, XP, or Vista, it is recommended that you log on with administrator authority.

To install Excelsior JET, simply launch the EXE file you have downloaded and follow the on-screen prompts.

Upon successful installation, the JET Setup program will be invoked automatically:

If your application works fine on the version of the Sun JRE indicated in the Use default profile option, simply click Finish. JET Setup will close and the JET Control Panel will open automatically unless you have unchecked the respective box.

Otherwise, select Create a new profile and click Next to proceed to the Profile Manager.

Quick Start

If you abstain from reading product manuals, here is a shortcut:

1. Identify the command line that runs your application on the conventional JRE, e.g.

       java -Xmx256m -Dfoo="bar" -jar MyApp.jar

   If your app is run by a shell script, create a copy of that script, open it in a text editor, and find the java command launching your application.

   If you use an IDE, such as IntelliJ IDEA, JBuilder, or Eclipse, the java launcher command line is typically displayed at the top of a Run window that appears when you start your application from within the IDE. You may select it and copy to clipboard.

2. Locate the Excelsior JET Launcher under the current profile directory, and determine its full pathname: for instance:

       JET-home\profile1.6.0_07\jre\bin\java.exe

3. Replace the pathname of the standard java launcher with the above pathname in the command line you identified on step 1, and execute the resulting command (or the modified shell script.)

   This will bring up a dialog displaying the application's working directory and command line:

   

4. Click Proceed to create a new project and open it in the JET Control Panel.

We did our best to make the following steps obvious to a person used to not read product manuals. :)

As you may see, the Excelsior JET Launcher has the same command line interface as the standard java launcher, but instead of running your application right away, it collects the information about its launch time configuration, such as classpath, main class, working directory, heap size, system properties, etc., and passes them to the JET Control Panel so that you could adjust those and other settings.

This is the fastest way to begin using Excelsior JET for the optimization of your application and also the easiest way to set up a project if your Java application is started via a complex script file.

Java Runtime Slim-Down

This unique feature enables you to omit the unused components of the Java SE runtime when creating an installer for your application, while maintaining compatibility with the Java spec. Using Java Runtime Slim-Down, you may substantially reduce the download size and disk footprint of your application. The below chart shows the respective percentages for a few open-source applications compared to the Sun JRE 5.0:

For usage instructions,, please refer to the Chapter "Java Runtime Slim-Down" in the Excelsior JET User's Guide.

For sample downloads and technical details, please refer to the respective Excelsior JET Solution page.