Tram,
I see similar results and believe that this was a "bug?" introduced in the
second early access release. In order to work around it, I put all of my help
initilialization in the "run" method of its own class. Then I use
"SwingUtilities.invokeLater()" on this class. This works for me, but I am not
sure that it should be necessary.
Cynthia Jeness
Nguyen, Tram N. wrote:
> I know this is not exactly where i should post this question , but it seems
> like this is where I learned a lot of things concerning Java topics
> (although I haven't use my Linux box for a while), I hope you-experienced
> java programmers- might help me out with this.
>
> I'm trying to implement a Help System system using JavaHelp EA provided by
> Sun.I have jdk1.1.6 installed on my PC . I try to write very simple script
> followed code fragment and demos from Sun docs; however, i keep getting
> NullPointerException when trying to set a HelpSet from URL . I'm pretty
> sure
> that the way I setup my help docs is correct since I can use hsviewer to
> bring up this helpset file and its sub files . Here some of my code and
> where it gets choked.
>
> public class iscsbJPanel extends com.sun.java.swing.JPanel implements
> java.awt.event.ActionListener
> {
> HelpSet mainHS;
> HelpBroker mainHB;
> static final String helpsetName = "tram";
>
> public iscsbJPanel()
> {
> super();
> try {
> ClassLoader cl = iscsbJPanel.class.getClassLoader();
> URL url = HelpSet.findHelpSet(cl, helpsetName);
> System.out.println("URL : " + url.toString());
> mainHS = new HelpSet(cl,url);
> } catch (Exception ee) {
> System.out.println ("Help Set "+helpsetName+" not found : "
> + ee.toString());
> ee.printStackTrace();
> return;
> }
> }
>
> Output :
> URL : systemresource:/ZIP3/+/tram.hs
> Help Set tram not found : java.lang.NullPointerException
> java.lang.NullPointerException
> at javax.javahelp.HelpSet.<init>(HelpSet.java:76)
> at iscsbJPanel.<init>(iscsbJPanel.java:32)
> at iscsbHelp.<init>(iscsbHelp.java:36)
> at iscsbHelp.main(iscsbHelp.java:55)
>
> Could someone please tell me what I need to do to just load a simple
> HelpSet
> or some sample working code ?
>
> Tram Nguyen N.
> Science Application International Corporation
> http://www.saic.com
> (619) 646-3357
