How to extract ONLY the contents of the JDK installer

Question

I just downloaded the Java SDK/JDK versions 5 and 6, and I just need the development tools (and some libraries) contained in the installation packages, I don\'t need to perform

Answer 1

You can extract both JDK 1.5 and 1.6 from .exe files, using the Universal Extractor (really a great tool). But don't forget to convert all *.pack files (compressed with Pack200 format) into corresponding *.jar files, in order to obtain a full working environment. You can use the unpack200.exe command provided in the JDK itself.

Answer 2

You can do the installation once and then zip up the installed stuff placed under \Programs\Java.

This can be unzipped elsewhere later and used as a JDK in most IDE's without needing a full reinstall (but then Windows does not know about it)

Answer 3

Here's .bat script for unpacking "pack" files. Must be run in the root of unzipped JDK.

@echo off
echo **********************
echo unpack JDK pack-files
echo **********************
pause

set JAVA_HOME=c:\glassfish4\jdk7

setlocal enableextensions
for /r %%f in (*) do call :process %%f
endlocal
goto :eof

:process
if NOT "%~x1" == ".pack" goto :eof
set FOLDER=%~p1

set PWD=%CD%
pushd %FOLDER%
echo Unpacking %~nx1
%JAVA_HOME%\bin\unpack200.exe %~nx1 %~n1.jar
popd

goto :eof

Answer 4

I use 7-zip to do that. It seems to handle that installer/self-extracting executables nicely.

Answer 5

Maybe you can try Universal Extractor. The site looks legit, but I haven't tried it myself.

Answer 6

a little late to the party

here's an extractor written in powershell

param($installdir)

$list=$(gci -Recurse ./$installdir/*.pack) | %{
    return @{
        source=$_.FullName
        parent=$_.Directory.FullName
        target="$($_.Directory.FullName)\$([io.path]::GetFileNameWithoutExtension($_.Name)).jar"
    }
} | %{
    $result = $(unpack200 $_.source $_.target)
    $_result=$result
    return $_
}

Write-Host $(ConvertTo-Json $list)