This mantis release, espeically JDK, will be a big shock to customer
(developer). It's using lots of diskspaces due to the new install
shield and update feature.

I'm using a Windows 2000 system. The Windows system disk is using FAT32
file system. Before installation, it has 674M free space, after installing
JDK (default mode), there is only 362M free. This J2SDK installation
used almost 312M!

Here is a summary of the space used after installation, you can see
there are several issues here:

- J2SDK1.4.2 dir. Its size is 75.8M, but on FAT32 file system, it is using
  actually 114M space.

  1. Many small files, such as .class and .java files under demo dir. Each
     of them is about size 1K, but on the disk (especially large disk), each
     of them will use 4k (or each 8K, based on default allocation unit).

    Suggestion: Deliver demos in zip file format.

  2. Under demo dir, the structure is like this:
     demo -applets dir
       -jfc dir
       -plugin dir
         -applets dir
         -jfc dir
     Maybe I'm wrong here, but those 'applet' and 'jfc' dirs under plugin
     dir are really exactly *duplicate* of those two under demo dir!

     Suggestion: Revise the bundled stuff here please!

- Under \Program Files\Common Files\Java\Update\Base Images\ dir, there
  is a J2SDK base image dir, which used 51M space.
  Since update only support J2SE, why do we keep image of JDK here?
  Big waste.

  Suggestion: Remove JDK base image.

- After installation, under
  \Documents and Settings\Administrator\Local Settings\Application Data
  dir, there are two ${CLSID} subdirs containing two .msi file, one for
  jdk, one for jre.

  I wonder why they can not be removed. During the installation process,
  InstallShield will create above two ${CLSID} folders (and .msi files)
  under %TEMP% dir. And after installation, they are removed by IS.

  Suggestion: I guess JDK IS program is misconfigured to copy those
  two .msi files to 'Local Settings\Application Data' folder.


If above issues could be resolved, disk usage could save around 130M.
(Base image: 51M, 2 msi files: 48M, j2sdk demo: 30M).

Consider other popular products, Star Office 6: 180M, Forte 4J: 88M,
even microsoft office: 100 - 200M (customized installation).
Our JDK is really using lots of spaces!


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