Optimizes Java^TM class files (.class)

• Removes unused fields, methods, strings, constants, attributes
• Optimizes constant pool and byte code
• Removes debug information

The size of files can be reduced up to 50%

DOWNLOAD

J.Class Optimizeris distributed as self-extracting archive.
Download it: jco100-win32.exe (160Kb)

INSTALLATION

• Run jco100-win32.exe
• See Readme.txt file

EXAMPLE

J.Class Optimizer is a console 32-bit application and is very much simple in use. For example we optimize a demonstration applet Animator from
Java^TM Development Kit 1.2:

C:\jdk1.2\demo\applets\Animator>jco *.class -max 
J.Class Optimizer for Windows. Version 1.00 Copyright (c) 1999 
Author's copy 

Class file name                 Old size Change Percent 
------------------------------------------------------- 
Animation.class                     7336  -1055     14% 
AnimationFrame.class                 577   -114     20% 
Animator.class                     10577  -1473     14% 
DescriptionFrame.class              1486   -189     13% 
ParseException.class                 264   -113     43% 
------------------------------------------------------- 
Files processed: 5 
Total reduction: 2944

C:\jdk1.2\demo\applets\Animator>

Now Animator running again:

SUPPORT

J.Class Optimizer is provided with support via e-mail. For technical support, please contact us at:

In the subject of your mail, please write JCO version number.

In case of any problem you can apply directly to the author of the program:

JAVA EDITION

J.Class Optimizer for Java platform is now under development. Java edition of J.Class Optimizer will be accessible as soon as it is ready.

ONLINE ORDERING

You can register your copy of J.Class Optimizer at a cost of $29 through the World Wide Web. This is the fastest and easiest way. Your credit card information is sent directly to the credit card processor in a very secure manner, so that nobody else can see it. That protects you by ensuring that nobody but you and the credit card processor will see your card.

Order the Fully Licensed Version of J.Class Optimizer

On payment approval we'll send you the registration key which will remove all limitations of unregistered version.