rem Make sure prerequisite environment variables are set

if not "%JAVA_HOME%" == "" goto gotJdkHome

if not "%JRE_HOME%" == "" goto gotJreHome

echo Neither the JAVA_HOME nor the JRE_HOME environment variable is defined

echo Service will try to guess them from the registry.

goto okJavaHome

:gotJreHome

if not exist "%JRE_HOME%\bin\java.exe" goto noJavaHome

if not exist "%JRE_HOME%\bin\javaw.exe" goto noJavaHome

goto okJavaHome

:gotJdkHome

if not exist "%JAVA_HOME%\jre\bin\java.exe" goto noJavaHome

if not exist "%JAVA_HOME%\jre\bin\javaw.exe" goto noJavaHome

if not exist "%JAVA_HOME%\bin\javac.exe" goto noJavaHome

if not "%JRE_HOME%" == "" goto okJavaHome

set "JRE_HOME=%JAVA_HOME%\jre"

goto okJavaHome