Sun Microsystems J2ME User Manual

Page 28

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J2ME Wireless Toolkit User’s Guide • October 2004

3. Uncompress the

proguard.jar

file from the

lib

directory of the ProGuard

installation to the

bin

directory of your J2ME Wireless Toolkit installation.

Once ProGuard is installed, you can use it by choosing Project > Package > Create
Obfuscated Package

In some cases you will need to provide a script file that controls how the obfuscator
works. If you are loading classes using

Class.forName()

, for example, you need

to tell ProGuard to leave the class names unchanged.

Create a script file using a text editor, then save it under the project’s main
directory. Consult the ProGuard documentation for information on script files.
Next you need to tell the toolkit how to find this file. To do this, edit
{toolkit}

\wtklib\

{platform}

\ktools.properties

, where {platform} is the name of

your underlying platform (most likely

Windows

Linux

). Add a line as follows:

obfuscate.script.name: scriptfile

Replace “scriptfile” with the name you used for the script file. You will need to quit
and restart KToolbar for the change to take effect.

The J2ME Wireless Toolkit also includes support for RetroGuard. If you want to use
RetroGuard, you’ll need to download it separately and change the toolkit’s
configuration.

1. Go to the RetroGuard web site,

http://www.retrologic.com/retroguard-

main.html

2. Download the latest version.

3. Extract the

retroguard.jar

file from downloaded zip file to the

bin