java version script

scripts/javaver.cmd

@@ -0,0 +1,38 @@
+@echo off
+
+set BRANCH=%1
+
+echo Checking java version...
+
+:: 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
+)
+
+if %BRANCH% EQU stable (
+  :: Ensure java 8
+  if %MAJOR% EQU 1 (
+    if %MINOR% LSS 8 (
+      echo Java version is less than 8, please download Java 8
+      exit /b
+    )
+  )
+)
+
+if %BRANCH% EQU development (
+  :: Ensure java 17
+  if %MAJOR% LSS 17 (
+    echo Java version is less than 17, please download Java 17
+    exit /b
+  )
+)
+
+echo Java version is compatible