???Exit JAVA app in Win2K LOCKS MACHINE???

When i hit the X button in the top right to close my apps
Win2000 Locks up completly.
Why?
What do i install to fix this problem?
Im running JSDK 1.4.1_01
win 2k
dont know what service packs or crap is installed!
Someone help, i need to give presentations using java on this machine!

Uninstal the Java SDK and then reboot (do a cold boot). This will clear out all the Sun Java stuff and then delete the directory (and all the subdirectories) that used to have Java in it. After you do this, go into your systems temp directory and clear everything out. After that then reinstall the SDK. Cold boot again. Some where in your system the java install has become messed up--Windows does that from time to time (all flavors of Windows even the "NT" class of produt).

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Can I programmatically update a java app on a user machine via the network?

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3rd party Java apps and apps I've developed all seemed to be very buggy on one of my 64 bit windows 7 machines with JRE 1.6. I can run them in an XP VM on the same computer with no problems. Some apps lock up immediately and others it's just a matter of time before they lock up. I've searched and searched but haven't seen this issue anywhere else and don't have this problem on my 64 bit Windows 7 machine at home. Does anyone have any idea what might cause this? I'm at a loss and since it's my work PC with the problem I have to test Java apps in the XP VM which is a pain.
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Hi,
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java.io.BufferedReader br =
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Runtime.getRuntime().exec ("/sbin/ifconfig ppp0").
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Killing Java app from C

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Unfortunately I am running into the same issues using JDK1.4 on Win32. Basically the call to jvm->DestroyJavaVM() is NEVER returning. This seems to mainly be a problem when you use classes which require a native class loader to load native libraries. EX: classes which use System.loadLibrary("some native library"). Has anyone found a workaround to allow us to stop the jvm from the native side when these are present?
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Hi all,
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Thanks.

<pre>
import java.util.Properties;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
import java.util.Enumeration;
import java.util.NoSuchElementException;
public class RunProg implements Runnable, Cloneable
private String iProg;
private String iArgs[];
public static void main(String args[])
new RunProg().main();
// first step is to start main program itself
private void main()
Properties properties = System.getProperties();
try
properties.load(new FileInputStream("RunProg.properties"));
catch(IOException e)
System.setProperties(properties);
int i = 0;
System.out.println("enter main, activeCount=" + Thread.activeCount());
while(true)
String program = properties.getProperty("Prog" + i);
if(program == null)
break;
StringTokenizer st = new StringTokenizer(program);
String[] args = new String[st.countTokens() - 1];
try
RunProg rp = (RunProg)this.clone();
rp.iProg = st.nextToken();
for(int j = 0; st.hasMoreTokens(); j++)
     args[j] = st.nextToken();
rp.iArgs = args;
Thread th = new Thread(rp);
th.setName("prog" + i + "=" + program);
th.start();
System.out.println("prog" + i + "=" + program + ", started");
catch(CloneNotSupportedException e)
System.out.println("prog" + i + "=" + program + ", can't start");
i++;
     System.out.println("end of main, activeCount=" + Thread.activeCount());
// next step is to start all others one by one
public void run()
try
Class c = Class.forName(iProg);
Class p[] = new Class[1];
p[0] = String[].class;
Method m = c.getMethod("main", p);
Object o[] = new Object[1];
o[0] = iArgs;
m.invoke(null, o);
catch(ClassNotFoundException e)
System.out.println(iProg + "ClassNotFoundException");
catch(NoSuchMethodException e)
System.out.println(iProg + "NoSuchMethodException");
catch(InvocationTargetException e)
System.out.println(iProg + "NoSuchMethodException");
catch(IllegalAccessException e)
System.out.println(iProg + "NoSuchMethodException");
System.out.println(Thread.currentThread().getName() + ", ended");
System.out.println("exit run, activeCount=" + Thread.activeCount());
// setup SecurityManager to disable method System.exit()
public RunProg()
     SecurityManager sm = new mySecurityManager();
     System.setSecurityManager(sm);
// inner-class to disable method System.exit()
protected class mySecurityManager extends SecurityManager
     public void checkExit(int status)
          super.checkExit(status);
          Thread.currentThread().stop();
          throw new SecurityException();
* inner-class to analyze StringTokenizer. This class is enhanced to check double Quotation marks
protected class StringTokenizer implements Enumeration
private int currentPosition;
private int maxPosition;
private String str;
private String delimiters;
private boolean retTokens;
* Constructs a string tokenizer for the specified string. All
* characters in the <code>delim</code> argument are the delimiters
* for separating tokens.
* <p>
* If the <code>returnTokens</code> flag is <code>true</code>, then
* the delimiter characters are also returned as tokens. Each
* delimiter is returned as a string of length one. If the flag is
* <code>false</code>, the delimiter characters are skipped and only
* serve as separators between tokens.
* @param str a string to be parsed.
* @param delim the delimiters.
* @param returnTokens flag indicating whether to return the delimiters
* as tokens.
public StringTokenizer(String str, String delim, boolean returnTokens)
currentPosition = 0;
this.str = str;
maxPosition = str.length();
delimiters = delim;
retTokens = returnTokens;
* Constructs a string tokenizer for the specified string. The
* characters in the <code>delim</code> argument are the delimiters
* for separating tokens. Delimiter characters themselves will not
* be treated as tokens.
* @param str a string to be parsed.
* @param delim the delimiters.
public StringTokenizer(String str, String delim)
this(str, delim, false);
* Constructs a string tokenizer for the specified string. The
* tokenizer uses the default delimiter set, which is
* <code>"\t\n\r\f"</code>: the space character, the tab
* character, the newline character, the carriage-return character,
* and the form-feed character. Delimiter characters themselves will
* not be treated as tokens.
* @param str a string to be parsed.
public StringTokenizer(String str)
this(str, " \t\n\r\f", false);
* Skips delimiters.
protected void skipDelimiters()
while(!retTokens &&
(currentPosition < maxPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) >= 0))
currentPosition++;
* Tests if there are more tokens available from this tokenizer's string.
* If this method returns <tt>true</tt>, then a subsequent call to
* <tt>nextToken</tt> with no argument will successfully return a token.
* @return <code>true</code> if and only if there is at least one token
* in the string after the current position; <code>false</code>
* otherwise.
public boolean hasMoreTokens()
skipDelimiters();
return(currentPosition < maxPosition);
* Returns the next token from this string tokenizer.
* @return the next token from this string tokenizer.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
public String nextToken()
skipDelimiters();
if(currentPosition >= maxPosition)
throw new NoSuchElementException();
int start = currentPosition;
boolean inQuotation = false;
while((currentPosition < maxPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) < 0 || inQuotation))
if(str.charAt(currentPosition) == '"')
inQuotation = !inQuotation;
currentPosition++;
if(retTokens && (start == currentPosition) &&
(delimiters.indexOf(str.charAt(currentPosition)) >= 0))
currentPosition++;
String s = str.substring(start, currentPosition);
if(s.charAt(0) == '"')
s = s.substring(1);
if(s.charAt(s.length() - 1) == '"')
s = s.substring(0, s.length() - 1);
return s;
* Returns the next token in this string tokenizer's string. First,
* the set of characters considered to be delimiters by this
* <tt>StringTokenizer</tt> object is changed to be the characters in
* the string <tt>delim</tt>. Then the next token in the string
* after the current position is returned. The current position is
* advanced beyond the recognized token. The new delimiter set
* remains the default after this call.
* @param delim the new delimiters.
* @return the next token, after switching to the new delimiter set.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
public String nextToken(String delim)
delimiters = delim;
return nextToken();
* Returns the same value as the <code>hasMoreTokens</code>
* method. It exists so that this class can implement the
* <code>Enumeration</code> interface.
* @return <code>true</code> if there are more tokens;
* <code>false</code> otherwise.
* @see java.util.Enumeration
* @see java.util.StringTokenizer#hasMoreTokens()
public boolean hasMoreElements()
return hasMoreTokens();
* Returns the same value as the <code>nextToken</code> method,
* except that its declared return value is <code>Object</code> rather than
* <code>String</code>. It exists so that this class can implement the
* <code>Enumeration</code> interface.
* @return the next token in the string.
* @exception NoSuchElementException if there are no more tokens in this
* tokenizer's string.
* @see java.util.Enumeration
* @see java.util.StringTokenizer#nextToken()
public Object nextElement()
return nextToken();
* Calculates the number of times that this tokenizer's
* <code>nextToken</code> method can be called before it generates an
* exception. The current position is not advanced.
* @return the number of tokens remaining in the string using the current
* delimiter set.
* @see java.util.StringTokenizer#nextToken()
public int countTokens()
int count = 0;
int currpos = currentPosition;
while(currpos < maxPosition)
* This is just skipDelimiters(); but it does not affect
* currentPosition.
while(!retTokens &&
(currpos < maxPosition) &&
(delimiters.indexOf(str.charAt(currpos)) >= 0))
currpos++;
if(currpos >= maxPosition)
break;
int start = currpos;
boolean inQuotation = false;
while((currpos < maxPosition) &&
(delimiters.indexOf(str.charAt(currpos)) < 0 || inQuotation))
if(str.charAt(currpos) == '"')
inQuotation = !inQuotation;
currpos++;
if(retTokens && (start == currpos) &&
(delimiters.indexOf(str.charAt(currpos)) >= 0))
currpos++;
count++;
return count;
</pre>
RunProg.properties like this:
Prog1=GetEnv 47838 837489 892374 839274
Prog0=GetEnv "djkfds dfkljsd" dsklfj

Way to display the output of tail command in a Java app

Hi,
I have a Java app running in the Linux environment. The Weblogic outputs get written to a log. I would like to design a screen in my app that will enable me to monitor my logs. I normally log into the Linux machine and do a tail -f on the log.
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Any ideas would be most appreciated.
Thanks and regards,
Ganesh

I had a look at the API for the Process class which
lists an abstract method called getOutputStream().
What I am not clear is that the documentation says
that the exec method of Runtime will return an
instance of a subclass of Process. Does this mean
that the getOutputStream() method would have already
been coded for the subclass instance returned?Yes.
And even if we do get the OutputStream from the tail
-f process, we will still have to read and display
the info on a line by line basis. Will this happend
to be fast enough to macth atleast to some extent the
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Java Errors when using my Java App via Remote Desktop

I have a Java App that runs fine if I invoke it and run it on a windows xp machine "x".
If I remote desktop connect to machine "x" from another windows machine "y"
I get the errors and the Java App is not displayed correctly. It becomes unusable.
While remotely connected if I terminate the Java App and restart it the App
will run just fine and not generate any errors.
Specifically the steps are:
Open a cygwin shell.
invoke the app...java -jar xxx.jar
use the app on the machine, works fine without any exceptions.
Leave the app running and go home...eat dinner...then
VPN into the office
Startup Windows Remote Desktop to the pc running the app.
Start to use the app. Now the exception occur as I click on buttons/enter data into fields.
Then I terminate the App.
Then I restart the app... java -jar xxx.jar
It works fine without exceptions.
This app was developed using NetBeans 6.5
The errors are:
in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.sun.java.swing.plaf.windows.XPStyle$Skin.getWidth(Unknown Source)
at com.sun.java.swing.plaf.windows.XPStyle$Skin.getWidth(Unknown Source)
at com.sun.java.swing.plaf.windows.WindowsIconFactory$CheckBoxIcon.getIc
onWidth(Unknown Source)
at javax.swing.SwingUtilities.layoutCompoundLabelImpl(Unknown Source)
at javax.swing.SwingUtilities.layoutCompoundLabel(Unknown Source)
at javax.swing.plaf.basic.BasicRadioButtonUI.getPreferredSize(Unknown So
urce)
at com.sun.java.swing.plaf.windows.WindowsRadioButtonUI.getPreferredSize
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at javax.swing.plaf.basic.BasicButtonUI.getMinimumSize(Unknown Source)
at javax.swing.JComponent.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculateNonlinkedMinimumSize
(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculateMinimumSize(Unknown
Source)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculatePreferredSize(Unknow
n Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculatePreferredSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$ParallelGroup.calculateMinimumSize(Unknown So
urce)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ParallelGroup.calculateMinimumSize(Unknown So
urce)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ParallelGroup.calculateMinimumSize(Unknown So
urce)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ParallelGroup.calculateMinimumSize(Unknown So
urce)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateMinimumSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout.calculateAutopadding(Unknown Source)
at javax.swing.GroupLayout.prepare(Unknown Source)
at javax.swing.GroupLayout.minimumLayoutSize(Unknown Source)
at java.awt.Container.minimumSize(Unknown Source)
at java.awt.Container.getMinimumSize(Unknown Source)
at javax.swing.JComponent.getMinimumSize(Unknown Source)
at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.calculateSi
ze(Unknown Source)
at javax.swing.plaf.basic.BasicTabbedPaneUI$TabbedPaneLayout.minimumLayo
utSize(Unknown Source)
at java.awt.Container.minimumSize(Unknown Source)
at java.awt.Container.getMinimumSize(Unknown Source)
at javax.swing.JComponent.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculateNonlinkedMinimumSize
(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculateMinimumSize(Unknown
Source)
at javax.swing.GroupLayout$Spring.getMinimumSize(Unknown Source)
at javax.swing.GroupLayout$ComponentSpring.calculatePreferredSize(Unknow
n Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculatePreferredSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculatePreferredSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$Group.getSpringSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculateSize(Unknown Source)
at javax.swing.GroupLayout$Group.calculatePreferredSize(Unknown Source)
at javax.swing.GroupLayout$Spring.getPreferredSize(Unknown Source)
at javax.swing.GroupLayout$SequentialGroup.setValidSize(Unknown Source)
at javax.swing.GroupLayout$Group.setSize(Unknown Source)
at javax.swing.GroupLayout.calculateAutopadding(Unknown Source)
at javax.swing.GroupLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)

Crossposted
[http://forums.sun.com/thread.jspa?threadID=5421349&messageID=10892967#10892967]

How to pass Objects from Java App to JavaFX Application

Hello,
New to the JavaFX. I have a Java Swing Application. I am trying to use the TreeViewer in JavaFX since it seems to be a bit better to use and less confusing.
Any help is appreciated.
Thanks
I have my Java app calling my treeviewer JavaFX as
-- Java Application --
public class EPMFrame extends JFrame {
Customer _custObj
private void categoryAction(ActionEvent e)   // method called by Toolbar
        ocsCategoryViewer ocsFX;    //javaFX treeviewer
        ocsFX = new ocsCategoryViewer();    // need to pass in the Customer Object to this Not seeing how to do it.
                                              // tried ocsFX = new ocsCategoryViewer(_custObj) ;    nothing happened even when set this as a string with a value
public class ocsCategoryViewer extends Application {
String _customer;
@Override
    public void start(Stage primaryStage) {
     TreeView <String> ocsTree;
     TreeItem <String> root , subcat;
TreeItem <String> root = new TreeItem <String> ("/");
        root.setExpanded(true);
         ocsTree = new TreeView <String> (root);
         buildTree();     // this uses the Customer Object.
        StackPane stkp_root = new StackPane();
        stkp_root.getChildren().add(btn);
        stkp_root.getChildren().add(ocsTree);
        Scene scene = new Scene(stkp_root, 300, 250);
        primaryStage.setTitle("Tree Category Viewer");
        primaryStage.setScene(scene);
        primaryStage.show();
    public static void main(String[] args) {
        _customer = args[0];      // temporarily trying to pass in string.
        launch(args);

JavaFX and Swing integration is documented by Oracle - make sure you understand that before doing further development.
What are you really trying to do? The answer to your question depends on the approach you are taking (which I can't really work out from your question). You will be doing one of:
1. Run your Swing application and your JavaFX application as different processes and communicate between them.
This is the case if you have both a Swing application with a main which you launch (e.g. java MySwingApp) and JavaFX application which extends application which you launch independently (e.g. java MyJavaFXApp).
You will need to do something like open a client/server network socket between the applications and send the data between them.
2. Run a Swing application with embedded JavaFX components.
So you just run java MySwingApp.
You use a JFXPanel, which is "a component to embed JavaFX content into Swing applications."
3. Run a Java application with embedded Swing components.
So you just run java MyJavaFXApp.
You use a SwingNode, which is "used to embed a Swing content into a JavaFX application".
My recommendation is:
a. Don't use approach number one and have separate apps written in Swing and Java - that would be pretty complicated and unwarranted for almost all applications.
b. Don't mix the two toolkits unless you really need to. An example of a real need is that you have a huge swing app based upon the NetBeans platform and you want to embed a couple of JavaFX graphs in there. But if your application is only pretty small (e.g., it took less than a month to write), just choose one toolkit or the other and implement your application entirely in that toolkit. If your entire application is in Swing and you are just using JavaFX because you think its TreeView is easier to program, don't do that; either learn how to use Swing's tree control and use that or rewrite your entire application in JavaFX. Reasons for my suggestion are listed here: JavaFX Tip 9: Do Not Mix Swing / JavaFX
c. If you do need to mix the two toolkits, the answer of which approach to use will be obvious. If you have a huge Swing app and want to embed one or two JavaFX components in it, then use JFXPanel. If you have a huge JavaFX app and want to embed one or two Swing components in it, use a SwingNode. Once you do start mixing the two toolkits be very careful about thread processing, which you are almost certain screw up at least during development, no matter how an experienced a developer you are. Also sharing the data between the Swing and JavaFX components will be trivial as you are now running everything in the same application within the virtual machine and it is all just Java so you can just pass data around as parameters to constructors and method calls, the same way you usually do in a Java program, you can even use static classes and data references to share data but usually a dependency injection framework is better if you are going to do that - personally I'd just stick to simply passing data through method calls.

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 {
      System.out.println("Should now CREATE the domain");
private boolean domainExists() {
    try {
      interpreter.exec("readDomain('d:/myDomains/newDomain')");
      return true;
    }catch(Exception e) {
      return false;
}The output of this should be one of two possibles.
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.
It seams that the exec() method does not throw ANY exceptions from the WLST commands. The catch clause is never executed and the return value from domainExists() is always true.
None of the VERY limited number of examples using embedded WLST in java has exception or error handling in so I need to know what is the policy to detect failures in a WLST command executed in java??? i.e. How does my java application know when a command succeeds or not??
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.
It sets up stderr and stdout streams to interpret the results both from the Python interpreter level and at the JVM level where dumpStack() just seem to do a printStackTrace(). It also calls the dumpStack() command should the result contain this in its text. If either an exception is thrown from the lower level interpreter or dumpStack() is in the response I throw my WLSTException containing this information.
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

Java App error

When I open Firefox I get a Java App error. "TypeError: Components.classes['@ica.com/XPCOM/ICAFFComponent;1'] is undefined". Have a very hard time running any site with Java.
I really like Firefox and have it set up for use with all my daily work. I do not want to go back to IE but did upgrade see below.

Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

Java apps have started running very slowly since last update. Anyone else experiencing any problems.

There is an java app that I have run for years without any problem Within the last few days it started running very slowly. I went to the Apple store and ran the same app and experienced exactly the same problem
Yesterday I tried running this app on a Windows based machine and it ran perfectly.
I was all set to download the latest java when I saw that Apple supplied the java version on the MAC.
I have run sotware updates and get results that all software is uptodate.
Any suggestions?

There are many people who have posted about persistent export failures since the update. A search will uncover a number of threads just within the past month. There doesn't seem to be a pattern to these problems – and if there is common fix, I haven't heard about it.
However, the update hasn't been a problem for me – nor presumably has it been for the majority of users.
Russ

???Exit JAVA app in Win2K LOCKS MACHINE???

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