@echo off

set BRANCH=%1

echo Checking java version...

where java >nul 2>nul

if %errorlevel%==1 (

echo =======================================================================================

echo No version of Java was found!

echo To launch the server, you must install Java 17

echo =======================================================================================

exit /b

)

:: https://stackoverflow.com/questions/5675459/how-to-get-java-version-from-batch-script

for /f "tokens=3" %%g in ('java -version 2^>^&1 ^| findstr /i "version"') do (

@echo Output: %%g

set JAVAVER=%%g

)

set JAVAVER=%JAVAVER:"=%

for /f "delims=. tokens=1-3" %%v in ("%JAVAVER%") do (

set MAJOR=%%v

set MINOR=%%w

set BUILD=%%x

)

:: Ensure java 17

if "%MAJOR%" NEQ "17" (

echo =======================================================================================

echo !! Java version is not 17 !!

echo Please download Java 17 or later to ensure %BRANCH% branch server launches correctly.

echo =======================================================================================

exit /b

)

echo Java version is compatible