Calling javahelp from javafx

Question

I have JavaHelp accessed from a Java application. I am moving the application to JavaFX. I have tried rewriting the code I have but cannot make it work.
Does anyone have a working example?

Answer 1

The following code compiles but gives a runtime error on the HelpSet line. It doesn't like the null which appears to ask to system to find the default classloader.
public class myHelp {
static public HelpBroker startJavaHelp()
HelpBroker hb = null ;
     URL url = null;
try
     {   url = new URL("file://help/help.hs");
HelpSet hs = new HelpSet(null,url);
hb = hs.createHelpBroker();
System.out.println("created help broker");
     catch(Exception e)
     {   e.printStackTrace();
System.out.println("Url error here " + url);
     return hb ;
I can use ClassLoader instead but cannot determine what to load.
static public HelpBroker startJavaHelp()
HelpBroker hb = null ;
     URL url = null;
String helpHS = "help/help.hs";
ClassLoader cl = ecowand.Main.class.getClassLoader();
try
     {   url = HelpSet.findHelpSet(cl, helpHS);
HelpSet hs = new HelpSet(null,url);
hb = hs.createHelpBroker();
     catch(Exception e)
     {   e.printStackTrace();
System.out.println("Url error here " + url);
     return hb;
The line
ClassLoader cl = ecowand.Main.class.getClassLoader();
flags an error in netbeans. It appears to only want .java file here, not .fx
In my fx program, I call startJavaHelp() on startup, the idea being that this would give me the required HelpBroker that I could use, somehow, in the action when the Help button is pressed.
bye