Try the code bellow by saving it in a bat file. It will pack a bat file and jar in an executable and will call the bat file. You'll have to change the paths to your files:
;@echo off
;rem ----------------------------------------------------------
;rem ----------------- change the paths here -----------------
;rem ----------------------------------------------------------
;set "target_exe=packed.exe"
;set "bat_file=.\test.bat"
;set "jar_file=.\cassandra-jdbc-driver-0.6.4-shaded.jar"
;rem ----------------------------------------------------------
;for %%# in ("%bat_file%") do set "batch_file=%%~nx#"
;for %%# in ("%bat_file%") do set "bat_name=%%~nx#"
;for %%# in ("%bat_file%") do set "bat_dir=%%~dp#"
;for %%# in ("%jar_file%") do set "j_file=%%~nx#"
;for %%# in ("%jar_file%") do set "jar_name=%%~nx#"
;for %%# in ("%jar_file%") do set "jar_dir=%%~dp#"
;set "target.exe=%__cd__%%target_exe%"
;copy /y "%~f0" "%temp%\2exe.sed" >nul
;(echo()>>"%temp%\2exe.sed"
;(echo(AppLaunched=cmd.exe /c "%bat_name%")>>"%temp%\2exe.sed"
;(echo(TargetName=%target.exe%)>>"%temp%\2exe.sed"
;(echo(FILE0="%bat_name%")>>"%temp%\2exe.sed"
;(echo(FILE1="%jar_name%")>>"%temp%\2exe.sed"
;(echo([SourceFiles])>>"%temp%\2exe.sed"
;(echo(SourceFiles0=%bat_dir%)>>"%temp%\2exe.sed"
;(echo(SourceFiles1=%jar_dir%)>>"%temp%\2exe.sed"
;(echo([SourceFiles0])>>"%temp%\2exe.sed"
;(echo(%%FILE0%%=)>>"%temp%\2exe.sed"
;(echo([SourceFiles1])>>"%temp%\2exe.sed"
;(echo(%%FILE1%%=)>>"%temp%\2exe.sed"
;iexpress /n /q /m %temp%\2exe.sed
;rem del /q /f "%temp%\2exe.sed"
; exit /b 0
[Version]
Class=IEXPRESS
SEDVersion=3
[Options]
PackagePurpose=InstallApp
ShowInstallProgramWindow=0
HideExtractAnimation=1
UseLongFileName=1
InsideCompressed=0
CAB_FixedSize=0
CAB_ResvCodeSigning=0
RebootMode=N
InstallPrompt=%InstallPrompt%
DisplayLicense=%DisplayLicense%
FinishMessage=%FinishMessage%
TargetName=%TargetName%
FriendlyName=%FriendlyName%
AppLaunched=%AppLaunched%
PostInstallCmd=%PostInstallCmd%
AdminQuietInstCmd=%AdminQuietInstCmd%
UserQuietInstCmd=%UserQuietInstCmd%
SourceFiles=SourceFiles
[Strings]
InstallPrompt=
DisplayLicense=
FinishMessage=
FriendlyName=-
PostInstallCmd=<None>
AdminQuietInstCmd=
UserQuietInstCmd=
;