Make sure, ctbrec is started with Java >= 10

src/main/java/ctbrec/ui/Launcher.java

@@ -3,25 +3,20 @@ package ctbrec.ui;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import ctbrec.Java;
+
 public class Launcher {
 
     private static final transient Logger LOG = LoggerFactory.getLogger(Launcher.class);
 
     public static void main(String[] args) {
-        String jvmName = System.getProperty("java.vm.name");
-        if (jvmName.startsWith("OpenJDK")) {
-            // check for OpenJFX
-            try {
-                Class.forName("javafx.application.Application");
-                CamrecApplication.main(args);
-            } catch (ClassNotFoundException e) {
-                LOG.error("You are running ctbrec with OpenJDK, but OpenJFX can not be found.\n"
-                        + "Please either install OpenJFX or use the Oracle JRE, which you can download at\n"
-                        + "http://www.oracle.com/technetwork/java/javase/downloads/index.html");
-                System.exit(1);
-            }
-        } else {
-            CamrecApplication.main(args);
+        int javaVersion = Java.version();
+        if(javaVersion == 0) {
+            LOG.warn("Unknown Java version {}. App might not work as expected", javaVersion);
+        } else if (javaVersion < 10) {
+            LOG.error("Your Java version ({}) is too old. Please update to Java 10 or newer", javaVersion);
+            System.exit(1);
         }
+        CamrecApplication.main(args);
     }
 }