Embedding JavaHelp in an app

I've been trying to use JavaHelp to display some information within an app, using the table of contents to navigate. I can get the HelpContent viewer to pop up, but haven't figured out how to embed the help system in my app, which is supposedly possible. Or maybe I'm not clear on what "embedding" java help means. What I want to do is have a page of a card layout contain a table of contents in the left split pane and the content displayed on the right. I've gone through their IDEDemo source but am still unable to get it to work. If anyone has successfully done this, I'd appreciate any hints.
Craig

Is what you're trying to do is not have the HelpContent viewer pop up
in a separate window, but instead have it appear within your app's
window? Is that what you mean by "embedding" ?
I don't know if that's possible; I suspect that if it is, you'll have
to extend various classes and possibly change the manner in which the
help system is invoked.
You might get a better response asking in the javahelp forum,
http://forum.java.sun.com/forum.jsp?forum=42

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"Embedding" JavaHelp in my app

I've been trying to use JavaHelp to display some information within an app, using the table of contents to navigate. I can get the HelpContent viewer to pop up, but haven't figured out how to truly embed the help system in my app, which is supposedly possible. Or maybe I'm not clear on what "embedding" java help means. What I want to do is have a page of a card layout contain a table of contents in the left split pane and the content displayed on the right. In other words, have the content viewer display on a panel in my app rather than pop up in the normal dialog box. I've gone through their IDEDemo source but am still unable to get it to work the way I want. Maybe it would be necessary to use the JHelpContentViewer class as a model and rewrite it - but that would be a big job. If anyone has successfully done this, I'd appreciate any hints.
Craig

The IDEDemo of Sun JavaHelp isnot good, too complex.
There is a very simple example to demostrate how to embed JavaHelp to app.
may download it from: http://www.pivotonic.com/jawahelpauthor/HelloJavaHelp.zip

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Targeting a help page within JavaHelp from the app?

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Can you have a DIAdem file embedded in a web app and then when you click the link to the DIAdem file it invokes DIAdem?

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JavaHelp for web app?

Hello,
I'm trying to include JavaHelp for our web application.
Has anyone used this tool or any other tool with javascript for displaying help for web apps?
I tried to follow the browser demo that is in applet and comes with javahelp zip. It worked fine for me, but when tried to follow the same setting for the web application, I am getting this error.
java.lang.NoClassDefFoundError: Could not initialize class com.inmedius.mentor.support.amecr.JavaHelpApplet
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I have the following call to applet:
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Any input is greatly appreciated.
Thanks,

Yes, as long as you conform to what the HelpSet specifies you can use Servlets / JSPs.

Distributing javahelp with an app

Hi
I have an application which uses JavaHelp and this works great on my development workstation. I wanted to distribute my app at this point and wondered if anyone could tell me what i'm missing to get the JavaHelp system working on another machine. I haven't packaged anything separately, it is all within one jar file (helpset.hs, map.jhm, toc.xml etc). When I try to run my app on any other machine so far, i get the error message:
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But now I want to cry
Because of this...
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Problems with WLST embedded in java app.

Hi,
I have a problem with the WLST embedded in a java app.
I want to programatically create or reconfigure a domain from a java application. Following is a simple example of what I want to do.
import weblogic.management.scripting.utils.WLSTInterpreter;
public class DomainTester {
static WLSTInterpreter interpreter = new WLSTInterpreter();
private void processDomain() {
    if(domainExists()) {
      System.out.println("Should now UPDATE the domain");
    } else {
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private boolean domainExists() {
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1. If the domain exists already it should output
"Should now UPDATE the domain"
2. If the domain does not exist it should output
"Should now CREATE the domain"
However, if the domain does not exist the output is always :
Error: readDomain() failed. Do dumpStack() to see details.
Should now UPDATE the domain
It never returns false from the domainExists() method therefor always states that the exec() worked.
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Regards
Steve

Hi,
I did some creative wrapping for the WLSTInterpreter and I now have very good programatic access to the WLST python commands.
I will put this on dev2dev somewhere and release it into the open source community.
Don't know the best place to put it yet, so if anybody sees this and has any good ideas please feel free to pass them on.
Here is the wrapper class. It can be used as a direct replacement for the weblogic WLSTInterpreter. As I can't overload the actual exec() calls because I want to return a String from this call I created an exec1(String command) that will return a String and throw my WLSTException which is a RuntimeException which you can handle if you like.
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package eu.medsea.WLST;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import weblogic.management.scripting.utils.WLSTInterpreter;
public class WLSTInterpreterWrapper extends WLSTInterpreter {
     // For interpreter stdErr and stdOut
     private ByteArrayOutputStream baosErr = new ByteArrayOutputStream();
     private ByteArrayOutputStream baosOut = new ByteArrayOutputStream();
     private PrintStream stdErr = new PrintStream(baosErr);
     private PrintStream stdOut = new PrintStream(baosOut);
     // For redirecting JVM stderr/stdout when calling dumpStack()
     static PrintStream errSaveStream = System.err;
     static PrintStream outSaveStream = System.out;
     public WLSTInterpreterWrapper() {
          setErr(stdErr);
          setOut(stdOut);
     // Wrapper function for the WLSTInterpreter.exec()
     // This will throw an Exception if a failure or exception occures in
     // The WLST command or if the response containes the dumpStack() command
     public String exec1(String command) {
          String output = null;
          try {
               output = exec2(command);
          }catch(Exception e) {
               try {
                    synchronized(this) {
                         stdErr.flush();
                         baosErr.reset();
                         e.printStackTrace(stdErr);
                         output = baosErr.toString();
                         baosErr.reset();
               }catch(Exception ex) {
                    output = null;
               if(output == null) {
                    throw new WLSTException(e);
               if(!output.contains(" dumpStack() ")) {
                    // A real exception any way
                    throw new WLSTException(output);
          if (output.length() != 0) {
               if(output.contains(" dumpStack() ")) {
                    // redirect the JVM stderr for the durration of this next call
                    synchronized(this) {
                         System.setErr(stdErr);
                         System.setOut(stdOut);
                         String _return = exec2("dumpStack()");
                         System.setErr(errSaveStream);
                         System.setOut(outSaveStream);
                         throw new WLSTException(_return);
          return stripCRLF(output);
     private String exec2(String command) {
          // Call down to the interpreter exec method
          exec(command);
          String err = baosErr.toString();
          String out = baosOut.toString();
          if(err.length() == 0 && out.length() == 0) {
               return "";
          baosErr.reset();
          baosOut.reset();
          StringBuffer buf = new StringBuffer("");
          if (err.length() != 0) {
               buf.append(err);
          if (out.length() != 0) {
               buf.append(out);
          return buf.toString();
     // Utility to remove the end of line sequences from the result if any.
     // Many of the response are terminated with either \r or \n or both and
     // some responses can contain more than one of them i.e. \n\r\n
     private String stripCRLF(String line) {
          if(line == null || line.length() == 0) {
               return line;
          int offset = line.length();
          while(true && offset > 0) {
               char c = line.charAt(offset-1);
               // Check other EOL terminators here
               if(c == '\r' || c == '\n') {
                    offset--;
               } else {
                    break;
          return line.substring(0, offset);
}Next here is the WLSTException class
package eu.medsea.WLST;
public class WLSTException extends RuntimeException {
     private static final long serialVersionUID = 1102103857178387601L;
     public WLSTException() {
          super();
     public WLSTException(String message) {
          super(message);
     public WLSTException(Throwable t) {
          super(t);
     public WLSTException(String s, Throwable t) {
          super(s, t);
}And here is the start of a wrapper class for so that you can use the WLST commands directly. I will flesh this out later with proper var arg capabilities as well as create a whole Exception hierarchy that better suites the calls.
package eu.medsea.WLST;
// Provides methods for the WLSTInterpreter
// just to make life a little easier.
// Also provides access to the more generic exec(...) call
public class WLSTCommands {
     public void cd(String path) {
          exec("cd('" + path + "')");
     public void edit() {
          exec("edit()");
     public void startEdit() {
          exec("startEdit()");
     public void save() {
          exec("save()");
     public void activate() {
          exec("activate(block='true')");
     public void updateDomain() {
          exec("updateDomain()");
     public String state(String serverName) {
          return exec("state('" + serverName + "')");
     public String ls(String dir) {
          return exec("ls('" + dir + "')");
     // The generic wrapper for the interpreter exec() call
     public String exec(String command) {
          return interpreter.exec1(command);
     private WLSTInterpreterWrapper interpreter = new WLSTInterpreterWrapper();
}Lastly here is some example code using these classes:
its using both the exec(...) and cd(...) wrapper commands from the WLSTCommand.class shown above.
    String machineName = ...; // get name from somewhere
    try {
     exec("machine=create('" + machineName + "','Machine')");
     cd("/Machines/" + machineName + "/NodeManager/" + machineName);
     exec("set('ListenAddress','10.42.60.232')");
     exec("set('ListenPort', 5557)");
    }catch(WLSTException e) {
        // Possibly the machine object already exists so
        // lets just try to look it up.
     exec("machine=lookup('" + machineName + "','Machine')");
...After this call a machine object is setup that can be allocated later like so:
     exec("set('Machine',machine)");Regards
Steve

Embedding JavaHelp in an app

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