[FEATURE] Added Library#requiresJar

src/main/java/org/parabot/Landing.java

@@ -30,7 +30,6 @@ public final class Landing {
 	private static String username;
 	private static String password;
 	public static void main(String... args) throws IOException {
-		System.out.println(JavaUtil.JAVA_VERSION);
 		Core.initiateBugsnagInstance();
 
 		parseArgs(args);

src/main/java/org/parabot/core/lib/Library.java

@@ -42,6 +42,12 @@ public abstract class Library {
 	 */
 	public abstract URL getDownloadLink();
 
+	/**
+	 * Defines if the system requires a jar
+	 * @return boolean
+     */
+	public abstract boolean requiresJar();
+	
 	
 	/**
 	 * Fetches URL from {@link Library#getJarFile()}

src/main/java/org/parabot/core/lib/javafx/JavaFX.java

@@ -7,6 +7,7 @@ import org.parabot.core.Core;
 import org.parabot.core.Directories;
 import org.parabot.core.build.BuildPath;
 import org.parabot.core.lib.Library;
+import org.parabot.environment.api.utils.JavaUtil;
 
 /**
  * 
@@ -59,6 +60,11 @@ public class JavaFX extends Library {
 		return null;
 	}
 
+	@Override
+	public boolean requiresJar() {
+		return JavaUtil.JAVA_VERSION <= 1.7;
+	}
+
 	@Override
 	public String getLibraryName() {
 		return "JavaFX";

src/main/java/org/parabot/core/lib/naga/Naga.java

@@ -56,6 +56,11 @@ public class Naga extends Library {
         return null;
     }
 
+    @Override
+    public boolean requiresJar() {
+        return true;
+    }
+
     @Override
     public String getLibraryName() {
         return "Naga";

src/main/java/org/parabot/environment/Environment.java

@@ -33,7 +33,7 @@ public class Environment {
 		libs.add(new Naga());
 		
 		for(Library lib : libs) {
-			if(!lib.hasJar()) {
+			if(!lib.hasJar() && lib.requiresJar()) {
 				Core.verbose("Downloading " + lib.getLibraryName() + "...");
 				VerboseLoader.setState("Downloading " + lib.getLibraryName() + "...");
 				WebUtil.downloadFile(lib.getDownloadLink(), lib.getJarFile(), VerboseLoader.get());