Jar to exe using NSIS - jar

Question

so I seeking for a program (which is free) that will allow me to make from jar to exe with wrapping JRE also... til now I used Launch4J and I tried out others also but I found NSIS which is much more powerful and i think will fit what I'm looking for, but I'm having problems with defining CLASSPATH and CLASS.
Here's the code:
Name "Tool"
Caption "Internal"
Icon "UIT.ico"
OutFile "Tool.exe"
VIAddVersionKey "ProductName" "Tool"
VIAddVersionKey "Comments" "Internal"
VIAddVersionKey "CompanyName" ""
VIAddVersionKey "LegalTrademarks" ""
VIAddVersionKey "LegalCopyright" ""
VIAddVersionKey "FileDescription" "Tool"
VIAddVersionKey "FileVersion" "3.0.1934"
VIProductVersion 3.0.1934"
!define CLASSPATH "ApplicationTool.jar"
!define CLASS "v3build1934"
!define PRODUCT_NAME "Tool"
; Definitions for Java 8.0
!define JRE_VERSION "8.0"
!define JRE_URL "http://javadl.sun.com/webapps/download/AutoDL?BundleId=24936&/jre-6u10-windows-i586-p.exe"
;!define JRE_VERSION "8.0"
;!define JRE_URL "http://javadl.sun.com/webapps/download/AutoDL?BundleId=22933&/jre-1_5_0_16-windows-i586-p.exe"
; use javaw.exe to avoid dosbox.
; use java.exe to keep stdout/stderr
!define JAVAEXE "javaw.exe"
RequestExecutionLevel user
SilentInstall silent
AutoCloseWindow true
ShowInstDetails nevershow
!include "FileFunc.nsh"
!insertmacro GetFileVersion
!insertmacro GetParameters
!include "WordFunc.nsh"
!insertmacro VersionCompare
!include "UAC.nsh"
Section ""
Call GetJRE
Pop $R0
; change for your purpose (-jar etc.)
${GetParameters} $1
StrCpy $0 '"$R0" -classpath "${CLASSPATH}" ${CLASS} $1'
SetOutPath $EXEDIR
Exec $0
SectionEnd
; returns the full path of a valid java.exe
; looks in:
; 1 - .\jre directory (JRE Installed with application)
; 2 - JAVA_HOME environment variable
; 3 - the registry
; 4 - hopes it is in current dir or PATH
Function GetJRE
Push $R0
Push $R1
Push $2
; 1) Check local JRE
CheckLocal:
ClearErrors
StrCpy $R0 "$EXEDIR\pkg\bin\${JAVAEXE}"
IfFileExists $R0 JreFound
; 2) Check for JAVA_HOME
CheckJavaHome:
ClearErrors
ReadEnvStr $R0 "JAVA_HOME"
StrCpy $R0 "$R0\bin\${JAVAEXE}"
IfErrors CheckRegistry
IfFileExists $R0 0 CheckRegistry
Call CheckJREVersion
IfErrors CheckRegistry JreFound
; 3) Check for registry
CheckRegistry:
ClearErrors
ReadRegStr $R1 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion"
ReadRegStr $R0 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$R1" "JavaHome"
StrCpy $R0 "$R0\bin\${JAVAEXE}"
IfErrors DownloadJRE
IfFileExists $R0 0 DownloadJRE
Call CheckJREVersion
IfErrors DownloadJRE JreFound
DownloadJRE:
Call ElevateToAdmin
MessageBox MB_ICONINFORMATION "${PRODUCT_NAME} uses Java Runtime Environment ${JRE_VERSION}, it will now be downloaded and installed."
StrCpy $2 "$TEMP\Java Runtime Environment.exe"
nsisdl::download /TIMEOUT=30000 ${JRE_URL} $2
Pop $R0 ;Get the return value
StrCmp $R0 "success" +3
MessageBox MB_ICONSTOP "Download failed: $R0"
Abort
ExecWait $2
Delete $2
ReadRegStr $R1 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion"
ReadRegStr $R0 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$R1" "JavaHome"
StrCpy $R0 "$R0\bin\${JAVAEXE}"
IfFileExists $R0 0 GoodLuck
Call CheckJREVersion
IfErrors GoodLuck JreFound
; 4) wishing you good luck
GoodLuck:
StrCpy $R0 "${JAVAEXE}"
; MessageBox MB_ICONSTOP "Cannot find appropriate Java Runtime Environment."
; Abort
JreFound:
Pop $2
Pop $R1
Exch $R0
FunctionEnd
; Pass the "javaw.exe" path by $R0
Function CheckJREVersion
Push $R1
; Get the file version of javaw.exe
${GetFileVersion} $R0 $R1
${VersionCompare} ${JRE_VERSION} $R1 $R1
; Check whether $R1 != "1"
ClearErrors
StrCmp $R1 "1" 0 CheckDone
SetErrors
CheckDone:
Pop $R1
FunctionEnd
; Attempt to give the UAC plug-in a user process and an admin process.
Function ElevateToAdmin
UAC_Elevate:
!insertmacro UAC_RunElevated
StrCmp 1223 $0 UAC_ElevationAborted ; UAC dialog aborted by user?
StrCmp 0 $0 0 UAC_Err ; Error?
StrCmp 1 $1 0 UAC_Success ;Are we the real deal or just the wrapper?
Quit
UAC_ElevationAborted:
# elevation was aborted, run as normal?
MessageBox MB_ICONSTOP "This installer requires admin access, aborting!"
Abort
UAC_Err:
MessageBox MB_ICONSTOP "Unable to elevate, error $0"
Abort
UAC_Success:
StrCmp 1 $3 +4 ;Admin?
StrCmp 3 $1 0 UAC_ElevationAborted ;Try again?
MessageBox MB_ICONSTOP "This installer requires admin access, try again"
goto UAC_Elevate
FunctionEnd
What do i need to put in those 2 or should I move the script somewhere else for example where the netbeans project is ???

Answer 1

You can set environment variables for the NSIS process and child processes by calling SetEnvironmentVariable:
System::Call 'Kernel32::SetEnvironmentVariable(t "CLASSPATH", t "c:\some\path\you\got\from\the\registry")'