unpack-jdk-x64.bat

@echo off
set vernum=8u144
set jdkbasename=jdk8
set "tool7z=C:\Program Files\7-Zip\7z.exe"
set "jdk_exe=%1"

echo Extracting '.rsrc/1033/JAVA_CAB10/111'
%tool7z% e %jdk_exe% .rsrc/1033/JAVA_CAB10/111
rem :: %tool7z% e %jdk_exe% .rsrc/1033/version.txt

echo Extracting '111'
extrac32 111

echo Removing '111'
del 111

echo Extracting 'tools.zip'
%tool7z% x tools.zip -otools

echo Removing 'tools.zip'
del tools.zip

echo Extracting '*.pack'
cd tools
for /r %%x in (*.pack) do .\bin\unpack200 -r "%%x" "%%~dx%%~px%%~nx.jar"

echo Copying to %jdkbasename%-%vernum%
mkdir ..\%jdkbasename%-%vernum%
xcopy .\* ..\%jdkbasename%-%vernum% /Y /E

cd ..

echo Deleting tools directory
del /Q tools

echo Done - JDK in %jdkbasename%-%vernum%

Added better unpack logic.

Thanks for this script.

On Win10 and using a path with spaces on D:, I had to make these changes for it to work:

Line 4: set tool7z="PATH_TO_7z\7z.exe"
Line5: set jdk_exe="%1"
Line 34: rd /s /q tools

In short, del would never delete folder "tools" and I don't know about that SET VAR syntax with both the var and the value on quotes, I had to put them as normal (only value on quotes because of spaces, if any) for it to work.

Also have you checked Java 9? Apparently there is only a "tools.zip" inside the EXE and everything's already unpacked so no need for scripts? If you can take a look lemme know.

@TehPsychedelic No problem!

Feel free to fork and create a new version.

Yeah I don't know why the set was done that way, it must have been an older version of windows (10) I was using. I went looking for this myself and it no longer works unless you apply your changes. Also there was no user manual when I came to this page, you should put your jdk exes in a separate directory e.g.:
Directory of C:\software\jdks

11/26/2020 02:23 PM

.
11/26/2020 02:23 PM ..
11/26/2020 01:43 PM 212,582,768 jdk-8u181-windows-x64.exe
11/20/2020 02:27 PM 161,982,088 jdk-8u271-windows-i586.exe
11/26/2020 01:57 PM jdk8-8u144

Otherwise it seems like there is some weird functionality where it will copy everything else in your folder into the new jdk8-8u144 directory...