@echo off

:: requires Admin permissions

:: allows a files with .JAVA (in this case ) extension to act like .bat/.cmd files.

:: Will create a 'caller.bat' asociated with the extension

:: which will create a temp .bat file on each call (you can consider this as cheating)

:: and will call it.

:: Have on mind that the %0 argument will be lost.

rem :: "installing" a caller.

if not exist "c:\javaCaller.bat" (

echo @echo off

echo copy "%%~nx1" "%%temp%%\%%~nx1.bat" /Y ^>nul

echo "%%temp%%\%%~nx1.bat" %%*

) > c:\javaCaller.bat

rem :: associating file extension

assoc .java=javafile

ftype javafile=c:\javaCaller "%%1" %%*