helpset findHelpSet returns null

[kmm1977]

Hi

String pHelpSet = "docBook/jh/jhelpset.hs";
myHSUrl = HelpSet.findHelpSet(null, pHelpSet);

returns null always although the jhelpset.hs exists under the folder docBook/jh

What could be wrong ?

Regards
kmm

[JosAH]

Hi

String pHelpSet = "docBook/jh/jhelpset.hs";
myHSUrl = HelpSet.findHelpSet(null, pHelpSet);

returns null always although the jhelpset.hs exists under the folder docBook/jh

What could be wrong ?

Have you tried an absolute path, e.g. "/usr/kmm1977/docBook/jh/jhelpset.hs"?

kind regards,

Jos

[kmm1977]

i run the app in windows do u mean somethin glike

D:\\kmm1977\\docBook\\jh\\jhelpset.hs ?

[kmm1977]

it still returns null

is someother forum i read somelike this

ClassLoader c1 = this.class.getClassLoader();
URL hsURL = new URL("file:/c:/helpHS");
hs = new HelpSet(c1, hsURL);

[Norm]

What does the API doc for HelpSet.findHelpSet() say?
What package is HelpSet in?

[kmm1977]

structure goes like this in eclipse

- mainApp
- src/main
- application.java ( here is my main application )

- JRE System Lib
- Reference Lib
- bin ( here i have my jar files , also jhall.jar )
- docBook
- jh ( here is the jhelpset.hs )
- resources
- src

it is not in any package its in a folder in the application folder

[Norm]

Can you post the code for the findHelpSet() method?
I have no idea what it does.

[kmm1977]

its a huge code structure but i can explain

the main application is mainApp which is in package report

the manager class ( with main ) here is where the
myHSUrl = HelpSet.findHelpSet(null, pHelpSet); is called in the constructor

this is another package called onlineservice

from my main application i call the Manager constructor
myManager = new Manager("docBook/jh/jhelpset.jh",myScreen);

[Norm]

Where in the method does it decide to return null?
Look there.

[kmm1977]

yes i looked there
but it returns only null

the helpset files are not bundles as jar but are in folder

docBook/jh/jhelpset.hs
...

so i add this path to my classpath in eclipse

and i call this helpfile from my main app

HelpSet.findHelpSet(null, "docBook/jh/jhelpset.hs");
i also tried all types of path combination , it adamant not to work :confused:

[Norm]

but it returns only null

Are you saying that the findHelpSet method is this:

public  ... findHelpSet( ...) {
    return null;  // this is only line of code in this method
}

Hard to believe! There must be more to it than that

[kmm1977]

yes there is more lines which follow

URL myURL = HelpSet.findHelpSet(null, "docBook/jh/jhelpset.hs");

but since here i get null as return values , it crashes

,
what is basically required for implementing a java help system ?

may be i m missing some packages !!

[Norm]

Your are missing my point.
Why does the method: findHelpSet() return null?
That's what you want to fix, isn't it?

[kmm1977]

yes
i dont understand why findHelpSet returns null

although there exists jhelpset.hs file

[Norm]

We're sort of getting in a loop here.
Do you have the source code for findHelpSet? Can you look at it to see why it would return a null?
Or do you have doc for findHelpSet. Does it say why it will return a null?

[kmm1977]

oh sorry for the misunderstanding

findHelpSet is not implemented by me
please see the reference below

URL javax.help.HelpSet.findHelpSet(ClassLoader arg0, String arg1)

[Norm]

What did you find in the doc?

Here's a short program that may help you find the correct path to the file. Change filename to your path and put the program in the folder where your programs are. Keep changing filename until the value of url is not null.

/*
findHelpSet

public static java.net.URL findHelpSet(java.lang.ClassLoader cl,
                                       java.lang.String name)
As above but default on locale to Locale.getDefault()
Parameters:
cl - The ClassLoader to use. If cl is null the default ClassLoader is used.
name - The name of the resource.
Returns:
Null if not found.

*/

import java.net.*;

public class TestGetResource1 {

   public static void main(String[] args) {
     String filename = "../../Testing/ForumQuestions3/TestGetResource.java";
      try {
        URL url = (new TestGetResource1()).getClass().getClassLoader().getResource(filename);
        System.out.println("FN=" + filename + ", url=" + url);
      }catch(Exception x) {
        System.out.println("Error: FN=" + filename + ", error:" + x);
      }
   }
}
/*
FN=TestGetResource.java, url=file:/D:/JavaDevelopment/Testing/ForumQuestions3/TestGetResource.java
FN=/TestGetResource.java, url=file:/D:/JavaDevelopment/Testing/ForumQuestions3/TestGetResource.java
FN=../ForumQuestions3/TestGetResource.java, url=file:/D:/JavaDevelopment/Testing/ForumQuestions3/TestGetResource.java
FN=../../Testing/ForumQuestions3/TestGetResource.java, url=file:/D:/JavaDevelopment/Testing/ForumQuestions3/TestGetResource.java
FN=../../Testing/XXForumQuestions3/TestGetResource.java, url=null      <<<< NB: null when file does not exist
*/

[kmm1977]

thank you first for the effort you took

that example was great , which helped me understand the problem

what i found that , is that the path is the problem . the application was not finding the files correctly

thats an issue for eclipse to solve

i put all the files in the bin folder of the application and it seems to work

i have to find out to configure the eclipse search path to make the app find the files .

any way thanks for that

[JosAH]

thats an issue for eclipse to solve

It has nothing to do with Eclipse; helpsets are resources and are searched for as such; read the API documentation for the Class file where it is described how resources are found.

kind regards,

Jos

[kmm1977]

ok i ll look into it


I now make a runnable jar , with eclipse and all is fine

only the resource files i.e. png files are not shown in the help system of my application

the png files lie under the subfolder of, the folder structure is as follows

application folder
- src/main
- JRE System Lib
- Reference Lib
- bin ( here i have my jar files , also jhall.jar )
- docBook
- jh ( here is the jhelpset.hs )
- resources
- src