java-programmer >>evaluating the computers TCP and UDP socket states

evaluating the computers TCP and UDP socket states

Index ‹ java-programmer

Previous
- 2
 - Java Printing API and Tobit FaxWareThis example for the Java Printing API
 
 http://java.sun.com/products/java-media/2D/forDevelopers/sdk12print.html#printable
 
 creates different output in Suns JRE 1.4 and 1.5 (tested with Windows
 2000). This can be easily checked using the 'print to file' option.
 
 The different behaviour of the new 1.5 JRE is causing problems with the
 Tobit FaxWare printer driver.
 
 Tobit FaxWare detects special command strings in the document, which
 start with @@, followed by a command name and optionally a space
 character ($20, #32) and a character, finally @@ again. For example, the
 receiver fax number is encoded as @@NUMMER +4996421@@. If a document is
 printed on the FaxWare printer driver using JRE 1.4, the document will
 be sent as a Fax to this number.
 
 In JRE 1.5 however, the printer output contains the character $a0 (#160)
 instead of space, this is causing an error message in Tobit FaxWare.
 
 I would like to find the reason for this change but could not find
 information in the JRE 1.5 releasenotes
 (http://java.sun.com/j2se/1.5.0/compatibility.html#incompatibilities),
 is there another place where i could find informations about the
 background of this change?
 
 Many thanks in advance,
 Michael
- 2
 - Together J 5.5Hi,
 
 once there was a "community version" of TogetherJ. I have a 5.5 on CD
 from a Together Presentation long ago but I am missing the community
 "licence.tg". It was free (long time ago) but no longer available now.
 
 Anybody out there with one of theses files?
 
 Thx,
 
 Christian
- 5
 - Array List IssueI have been having this unique issue with Array List I am trying add
 say about 10 Objects in an Array List and conevr that to an Array.
 Later when I parse through the Array i am having an Array of length 10
 however i am only having the same element for all the 10 of them. can
 anyone out there throw some light onto what i am doing wrong here here
 is the peice of Code I am using
 
 Course course = null;
 
 for(int i=0;i<10;i++){
 course = new Course();
 course.setCourseName( "Course ".concat(Integer.toString(i)));
 
 aList.add(course);
 System.out.println(course.getCourseName());
 
 }
 
 Course[] courses = (Course[]) aList.toArray(new Course[0]);
 
 Thanks
 Sri
- 6
 - Site about CoffeeIf you're interested in the world of coffee, please check out
 www.thecoffeeresource.com
 The site will be updated somewhere this week with new content.
 
 Thanks for your time,
 TheCoffeeresource.com
- 6
 - jdbc commit issueHi,
 
 I'm facing some problems with the JDBC connection commit.
 I'm using an Oracle8i client and server.
 The jdbc library is classes12.jar
 
 My application uses eclipse3.1 as an IDE and the jdk version is
 jdk1.5.0_01
 
 The flow of logic is such that I acquire 2 to 3 connections to my
 database repository. On each of these connections some update/insert
 statements
 are executed (through jdbc PrepareStatement->executeUpdate())
 After the update statements I issue a connection.commit() on each of
 the connections where update statements are fired.
 
 I have noticed sometimes that although connection.commit has been
 issued, my DB does not have any data.
 
 If anyone has any clue to this please let me know.
 
 Thanks for your time.
 Arti
- 6
 - java script problems XP dpreview and other sitesMainly on the popular digital photo site dpreview.com but
 unfortunately not restricted to this site I sooner or later run into
 the problem that the site navigation and posting does not work any
 more: Normally a list of available sub items is displayed on the left
 side, when positioning the cursor on any a specific pull down pops up.
 But every other week or so the site is displayed with an empty
 background where the menu normaly is and therefore no further
 navigation ist possible. I Opera I get the menus but when I click the
 javascript enabled send button for posts nothing happens too.
 
 I am running Windos XP Home with all current updates with Norton
 Internet Security 2002 and Norton System Works 2002. Even after a
 clean reinstall of all apps with all updates I don't get a stable
 system. My only rescue so far is to load a system partion image of a
 good status some weeks ago. But as I said, this does not last for
 long.
 
 I tried reinstalling Windows Script 5.6, but it did not help.
 
 Albert
- 8
 - SendMailServlet example & server setup ?I tried this example :
 
 // import the JavaMail packages
 import javax.mail.*;
 import javax.mail.internet.*;
 
 // import the servlet packages
 import javax.servlet.*;
 import javax.servlet.http.*;
 
 // import misc classes that we need
 import java.util.*;
 import java.io.*;
 
 public class SendMailServlet extends HttpServlet {
 String smtpServer;
 
 public void init(ServletConfig config) throws ServletException
 {
 super.init(config);
 
 // get the SMTP server from the servlet properties
 smtpServer = config.getInitParameter("smtpServer");
 }
 
 public void doPost(HttpServletRequest req, HttpServletResponse res)
 throws ServletException, IOException
 {
 // get the message parameters from the HTML page
 String from = req.getParameter("from");
 String to = req.getParameter("to");
 String subject = req.getParameter("subject");
 String text = req.getParameter("text");
 
 PrintWriter out = res.getWriter();
 res.setContentType("text/html");
 
 try {
 // set the SMTP host property value
 Properties properties = System.getProperties();
 properties.put("smtp.mail.yahoo.com", smtpServer);
 
 // create a JavaMail session
 Session session = Session.getInstance(properties, null);
 
 // create a new MIME message
 MimeMessage message = new MimeMessage(session);
 
 // set the from address
 Address fromAddress = new InternetAddress(from);
 message.setFrom(fromAddress);
 
 // set the to address
 if (to != null) {
 Address[] toAddress = InternetAddress.parse(to);
 message.setRecipients(Message.RecipientType.TO, toAddress);
 }
 else
 throw new MessagingException("No \"To\" address specified");
 
 // set the subject
 message.setSubject(subject);
 
 // set the message body
 message.setText(text);
 
 // send the message
 Transport.send(message);
 
 out.println("Message sent successfully.");
 }
 catch (AddressException e) {
 out.println("Invalid e-mail address. " + e.getMessage());
 }
 catch (SendFailedException e) {
 out.println("Send failed. " + e.getMessage());
 }
 catch (MessagingException e) {
 out.println("Unexpected error. " + e.getMessage());
 }
 }
 }
 
 and got this:
 
 type Exception report
 
 message
 
 description The server encountered an internal error () that prevented it
 from fulfilling this request.
 
 exception
 
 java.lang.NullPointerException
 java.util.Hashtable.put(Hashtable.java:396)
 SendMailServlet.doPost(SendMailServlet.java:40)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
 with : properties.put("smtp.mail.yahoo.com", smtpServer);in line
 40.That is my first servlet so if you be so kind to give me a detailed
 answer.
- 8
 - javax.mail truncated urlHi!
 
 I use javax.mail to send http mails that include urls. On some mail
 clients, including Lotus iNotes, urls contained in the mail are
 truncated. For example:
 
 http://www.crappysite.com/index.html?param1=foo¶m2=bar
 
 becomes
 
 http://www.crappysite.com/index.html?param1
 
 Encoding in the email is set to "quoted-printable". I tried to set it
 to "base64" but it didn't resolve the problem.
 
 Thanks!
 
 Alex
- 8
 - Going to NMU jikes (C++ ABI update)
 I'm notice on <URL:http://people.debian.org/~mfurr/gxx/rebuild.html>
 that jikes need a rebuild due to the new C++ ABI. I asked on
 #debian-java if anyone is working on that, but got no reply. It is a
 build-dependency on 119 packages, so it is probably a good idea to do
 it quickly. I plan to do the NMU myself shortly, so this is just an
 warning email.
 
 I only change debian/changelog, adding this entry:
 
 jikes (1:1.22-2.1) unstable; urgency=low
 
 * Non-maintainer upload to get a rebuild with the new C++ ABI.
 
 -- Petter Reinholdtsen <email***@***.com> Fri, 22 Jul 2005 01:08:42 +0200
 
 --
 To UNSUBSCRIBE, email to email***@***.com
 with a subject of "unsubscribe". Trouble? Contact email***@***.com
- 8
 - Fax QuestionHas anyone used 'RFax 1.0 - Java [TM] fax component' from
 http://www.java4less.com/java_fax.htm?
 Good or bad (other comments)?
 
 thanks!
- 9
 - HTTP creepIf you look at the packet headers going back and forth to your HTTP
 server, you will discover a HECK of a lot of blather that really is
 not doing much.
 
 It is made worse by it all being human readable without abbreviations.
 
 Add this overhead up on all packet headers being transferred each day
 and you see a stupendous waste of bandwidth.
 
 HTTP should be put on a diet, with rigid defaults, bitfield headers,
 and compressed messages.
 
 The original protocol was designed for maximum flexibility. Now we
 have some experience, we can tighten it up.
 
 It matters now that you have tiny handhelds trying to surf the net
 over limited bandwidth.
 
 --
 Canadian Mind Products, Roedy Green.
 Coaching, problem solving, economical contract programming.
 See http://mindprod.com/jgloss/jgloss.html for The Java Glossary.
- 13
 - Using wildcard character in web.xml in Tomcat 5I am trying to achieve the following:
 
 <url-pattern>/a*</urlpattern> then go into servlet A. This would
 include /a, /aa, /abc/123 etc.
 
 I notice that servlet 2.4 doesn't treat * as a wildcard character in
 this case. Therefore, servlet A would only be called if the URL is
 exactly /a*.
 
 I need to create this pattern for all characters and numbers except
 when the path starts with '/_'. Therefore, I can not use a '/*'
 notation. Can anyone suggest a workaround to this issue?
 
 Thanks,
 TC
- 13
 - _scripting engines for java applications_Hi All,
 
 I've written java app with classes that strickly corresponds to user's
 business domain. Now I want to add scripting feature to my program to
 enable user to create own scenarios of processing objects of those
 business classes. Where to start? Is there any scripting languages
 implemented in java?
 
 thanks,
 
 Andrey
- 14
 - awt default toolkitThe following will not show the image nor will it throw any exceptions. Not
 throwing exceptions doesn't surprise me because the documentation show that
 it won't. That is a little surprising in itself. I am not using Swing
 components.
 
 public void paint(Graphics g){
 
 String fileName = "dir/a.gif";
 Toolkit toolkit = Toolkit.getDefaultToolkit();
 Image img = toolkit.getImage(fileName);
 
 // an awt panel's Graphics context doesnot show the image
 g.drawImage(img, 0,0, null);
 
 //this works fine
 g.drawString("aString",50,50);
 
 }
 
 thanks, mike
 
 ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
 http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
 ----= East and West-Coast Server Farms - Total Privacy via Encryption =----
- 14
 - Basic Struts loggingI'm learning Struts and I've got a simple example app running. I wanted
 to get logging working, so in the perform() method of my Action I put
 the code:
 
 ActionServlet as = getServlet();
 as.log("hello world");
 
 This compiled with no errors and ran without any problem; but the string
 was not written to either of the log files catalina.out or
 localhost_log.2004-09-21.txt (this is on Tomcat).
 
 Any hints or clues about how to get simple logging working? I looked at
 log4j and commons-logging but I want to start simpler.

Author

Message

David Haga

Posted: 2003-12-16 5:44:00

Top

java-programmer, evaluating the computers TCP and UDP socket states I am looking to be able to read the TCP and UDP socket states of the
computer using Java2.

I want to be able to determine when a certain TCP socket is listening
vs. connected, etc.

Does the java2 API cover this sort of ability?

thanks,

Dave Haga

p.s. just to be clear, I want to understand the state of ALL sockets,
not just the ones opened by Java. for instance, "netstat -a" on a
windows platform provides the status of all TCP and UDP sockets.

Index ‹ java-programmer

Next
- 1
 - [Static Classes]Hi All,
 
 Can someone explain when and why we use 'static classes' in Java ?
 Also why 'method local classes' are used and what is their significance
 ?
 
 Plz reply
- 2
 - 360degree rotation in Java2DI have a bit of a problem rotating Shapes using the Graphics2D function
 rotate(theta).
 
 My high-school trig lessons indeed tell me that sine and cosine functions go
 between -90 degrees and +90 degrees (or 0 and 180, if you like), and I can
 see why this means that when I call the rotate(...) function, it will not
 rotate the object all the way round the whole 360 degrees.
 
 Currently, I have a duplicate Shape object which is flipped so that for one
 half of the rotation the original shape is drawn, and for the second half,
 the other...
 
 There must be a better way!
 
 Any ideas?
 
 Cheers :o)
 
 Will
- 3
 - Get the Verb of request in jspHi Guys,
 
 Would anyone mind telling me how to get the verb of a request in jsp?
 I would like to know whether the user is using a POST or GET request.
 
 Thanks,
 James
- 4
 - Future of 3Djava
 
 Why comp.lang.java.3d doesn't exist ? If is not dead, for what purpose is
 using: games or some engineering tools ? Does java have a future in a
 gaming industry?
- 5
 - reading values from JTableI am looking for a working example of a JTable that is constructed
 with initial values in the cells, allows the user to change those values,
 and reads the values out.
 
 I've got three books on Swing, none of them show a write/read table.
 
 I have no problem creating tables with nothing in some cells, and
 reading the values out that the user entered.
 
 Here is how I construct the tables:
 
 DefaultTableModel model01= new DefaultTableModel(rowData,colNames);
 JTable table01= new JTable(model01);
 
 Any help greatly appreciated.
 --
 Robert Metzger
 Hewlett-Packard Company
 High Performance Computing Division
- 6
 - Announcement: Super 5.10 - a suite of J2EE toolsAnnouncement: Super 5.10 - a suite of J2EE tools.
 
 Super 5.10 comes with:
 SuperEnvironment
 SuperLogging
 SuperPeekPoke
 SuperReport
 SuperScheduler
 SuperStress
 SuperWatchdog
 
 and SuperPatrol, as a schedule job.
 
 The evaluation edition can be anonymously downloaded from:
 http://www.ACElet.com.
 
 Super is a component based monitor and administration tool
 for EJB/J2ee. It provides built-in functionality as well as
 extensions, as SuperComponents. Users can install
 SuperComponents onto it, or uninstall them from it.
 
 Super has the following functions:
 * A J2EE monitor.
 * A gateway to J2EE/EJB servers from different vendors.
 * A framework holding user defined SuperComponents.
 * A full-featured J2EE logging and J2EE tracing tool for centralized,
 chronological logging.
 * An EJB tool for Peeking and Poking attributes from EJBs.
 * An EJB Stress test tool.
 * A J2EE global environment tool.
 * A J2EE report tool.
 * A J2EE Scheduler tool.
 * A J2EE Business patrol tool.
 
 It is written entirely in the Java(TM) programming language.
 The current version support:
 * JOnAS 2.4 and 2.6
 * SunONE 7.0
 * Universal servers.
 * Weblogic 6.1, 7.0 and 8.1
 * Websphere 4.0, 5.0.2 and 5.1
 * jBoss 3.0 and 3.2
 
 ********** What is new:
 Version 5.10 January, 2004
 
 Enhancement:
 1. SuperScheduler 4.1: Multiple holiday set is an advanced feature
 now.
 This arrangement is convenient for most of users.
 2. Support WebSphere 5.1.
 
 Change:
 1. SuperScheduler 4.1: Repeating "At specified times" changes from
 "all
 things considered" algorithm to POSIX cron compatible
 implementation.
 
 Bug fix:
 1. SuperScheduler 4.1: Repeating Daily did not consider "Day time
 saving",
 so there were one hour shift in April and October.
 
 Version 5.00 January, 2004
 
 Enhancement:
 1. SuperScheduler 4.00: Rewritten SuperScheduler with bug fixes and
 enhancements,
 including: 1. Add task duration. 2. Add Email, JMS Queue and Topic
 jobs.
 3. Add Retry tasks. 4. Add GUI version of Unix cron repeating.
 5. Rewritten holiday facilities.
 2. SuperWatchdog 1.00 with File, JMS Queue, JMS Topic and User
 triggers and
 the same group of actions as SuperScheduler.
 3. SuperLogigng 4.01: Improved Alarm/Alert GUI.
 
 Version 4.00 November, 2003
 
 Enhancement:
 1. Support for both native protocol (RMI-IIOP) mode and HTTP/HTTPS
 (with/without proxy) protocol mode for SuperEnvironment,
 SuperLogging, SuperReport and SuperScheduler.
 2. SuperLogging 4.00: tracing can work on both live database and
 retired database.
 3. SuperReport 3.00: works for both live database and retired
 database.
 4. SuperScheduler 3.00: add URL job type (for Servlet/JSP). Add
 DoerTalker Table Panel.
 
 Bug fix:
 1. SuperScheduler 3.00: Interval change did not take effect until
 restart Super.
 
 Version 3.00 July, 2003
 
 Enhancement:
 1. SuperLoggingLibrary 3.00: New implementation for change scope
 adding "Smart" scope,
 with enhancements and bug fixes.
 2. SuperLoggingLibrary 3.00: Support mail server which requires user
 name and password.
 Add MenuTreePanel.
 3. Improved GUI and document.
 4. Add support to WebLogic 8.1.
 
 Bug fix:
 1. SuperScheduler 2.0: Fix a bug in FutureView for Hourly and
 Minutely.
 2. SuperScheduler 2.0: Startup should never be reported as missed.
 3. SuperScheduler 2.0: Could not reset job for existing task in some
 situation.
 
 Version 2.20 Jan. 2003
 
 Enhancement:
 1. Add desktop and start menu shortcuts for MS-Windows.
 2. Add support for SunONE 7, JOnAS 2.6 and jBoss 3.0.
 3. SuperLogging 2.40: Add new sendAlarmEmail() method.
 4. SuperScheduler 1.40: Add SuperSchedulerEJB for managing when
 direct database is not practical; Allow user to choose
 favorite logging software; Add Last day as Monthly
 repeating attribute.
 
 Change:
 1. Change Unusual to PatrolAlarm. The name "Unusual" was misleading.
 
 Bug fix:
 1. SuperEnvironment 1.31: Bug fix: if database is broken, could not
 open Environment Manager.
 2. SuperLogging client 1.52: Annoying exception thrown when you use
 JDK 1.4 (the program runs okay).
 3. SuperPeekPoke 1.61: Fix bug where input object contains
 java.lang.Double and alike.
 4. SuperScheduler 1.40: Bug fixes in: Memory leak; Reporting
 PatrolAlarm for SuperPatrol; Composite task with members;
 Non-scheduled run on other host; Around edges of last
 days in Monthly with holiday policy.
 
 Version 2.10 July 2002
 Enhancement:
 1. SuperScheduler 1.3: Add Future View to check future schedule in
 both text and Gantt-chart mode.
 2. SuperScheduler 1.3: Add graphic Gantt view for monitoring task's
 activities.
 3. SuperEnvironment 1.3: uses new graphic package adding print and
 preference facilities.
 4. SuperPeekPoke 1.6: uses new graphic package adding print and
 preference facilities.
 5. SuperStress 1.21: uses new graphic package.
 Bug fix:
 1. SuperStress 1.21: fixed graphic related bugs.
 
 Version 2.01 June 2002
 Enhancement:
 1. Add options for Look & Feel.
 2. Preference is persistent now.
 Bug fix:
 1. Installation for WebLogic 7.0: extEnv may not be installed on the
 right place, so SuperLibrar on the server side was not loaded and
 causes other problems.
 
 Version 2.00 June 2002
 Enhancement:
 1. SuperScheduler 1.2: All copies of SuperScheduler refresh themselves
 when any Doer causes things to change.
 2. SuperScheduler 1.2: Support default HTML browser for reading HTML
 document.
 3. SuperReport 1.2: Support default HTML browser for reading HTML
 document.
 4. Support WebLogic 7.0.
 5. SuperEnvironment 1.21: Database Panel appears when it is necessary.
 6. SuperEnvironment 1.21: New SuperEnvironment tour.
 Bug fix:
 1. WebSphere Envoy did not always list all JNDI names.
 
 Version 1.90 May 2002
 Enhancement:
 1. Rewritten SuperLogging engine. Add Alarm Email on SuperLogging.
 2.Rewritten SuperScheduler allowing multiple Doers. Add support to
 holiday policy, effective period. Add Patrol job type as SuperPatrol.
 3. Add support for both JOnAS and jBoss.
 4. Add more elements on Report criteria.
 Change:
 1. Now, both left and right mouse clicks are the same on Table Panel:
 toggle ascend and descend.
 2. New log database.
 Bug fix:
 1. Alert email should be sent once in the interval, regarding number
 of servers in the clustering.
 2. Minor bug fixes to make errors handled better on SuperLogging.
 3. If withFileInfo or withTimestamp are changed alone, Style Panel did
 not save them.
 4. Rewritten SuperLogging and SuperScheduler with many bug fixes.
 
 Version 1.80 March 2002
 Enhancement:
 1. Add new component: SuperScheduler
 Bug fix:
 1. SuperLogging: Verbose should ignore class registration.
 2. SuperLogging-tracing: an exception was thrown if the java class
 without package name.
 
 Version 1.70 January 2002
 Enhancement:
 1. SuperLogging: Scope can dynamically change both for upgrade to
 downgrade (for weblogic 6.1, need download an application).
 2. Add alias names for log threshold as new Java suggests.
 3. New component: SuperReport.
 Change:
 1. SuperLogging: Log database parameters are specified in a properties
 file, instead of EJB's deployment descriptor. It is more convenient
 and it avoids some potential problems. No change for development,
 easier for administration.
 Bug fix:
 1. Add Source Path Panel now accepts both directory and jar file.
 2. Bug in SuperEnvironment example (for version 1.60 only).
 
 Version 1.60 December 2001
 Enhancement:
 1. SuperPeekPoke and SuperStress can use user defined dynamic argument
 list.
 2. Add timeout parameter to logging access.
 3. New installation program with A). Easy install. B). Remote command
 line install.
 4. Support EJB 2.0 for Weblogic 6.1.
 5. Support SuperPeekPoke, SuperEnvironment and SuperStress for
 Websphere 4.0 (SuperLogging was supported since version 1.5).
 Change:
 1. Poke: argument list is set at define time, not invoke time.
 2. Default log database change to server mode from web server mode,
 booting performance to 10-20 times.
 Bug fix:
 1. If the returned object is null, Peek did not handle it correctly.
 2. If the value was too big, TimeSeries chart did not handle it
 correctly. Now it can handle up to 1.0E300.
 3. Help message was difficult to access in installation program.
 4. Source code panel now both highlights and marks the line in
 question (before it was only highlight using JDK 1.2, not JDK 1.3).
 5. Delete an item on PeekPoke and add a new one generated an error.
 
 Version 1.50 August, 2001
 Enhancement:
 1. Source code level tracing supports EJB, JSP, java helper and other
 programs which are written in native languages (as long as you
 write correct log messages in your application).
 2. Redress supports JSP now.
 3. New installation with full help document: hope it will be easier.
 4. Support WebSphere 4.0
 
 Version 1.40 June, 2001
 Enhancement:
 1. Add SuperEnvironment which is a Kaleidoscope with TableView,
 TimeSeriesView and PieView for GlobalProperties.
 GlobalProperties is an open source program from Acelet.
 2. SuperPeekPoke adds Kaleidoscope with TableView, TimeSeriesView and
 PieView.
 Changes:
 1. The structure of log database changed. You need delete old
 installation and install everything new.
 2. The format of time stamp of SuperLogging changed. It is not locale
 dependent: better for report utilities.
 3. Time stamp of SuperLogging added machine name: better for
 clustering environment.
 Bug fix:
 1. Under JDK 1.3, when you close Trace Panel, the timer may not be
 stopped and Style Panel may not show up.
 
 Version 1.30 May, 2001
 Enhancement:
 1. Add ConnectionPlugin support.
 2. Add support for Borland AppServer.
 
 Version 1.20 April, 2001
 Enhancement:
 1. Redress with option to save a backup file
 2. More data validation on Dump Panel.
 3. Add uninstall for Super itself.
 4. Add Log Database Panel for changing the log database parameters.
 5. Register Class: you can type in name or browse on file system.
 6. New tour with new examples.
 
 Bug fix:
 1. Redress: save file may fail.
 2. Install Bean: some may fail due to missing manifest file. Now, it
 is treated as foreign beans.
 3. Installation: Both installServerSideLibrary and installLogDatabase
 can be worked on the original file, do not need copy to a temporary
 directory anymore.
 4. PeekPoke: if there is no stub available, JNDI list would be empty
 for Weblogic5-6. Now it pick up all availble ones and give warning
 messages.
 5. Stress: Launch>Save>Cancel generated a null pointer exception.
 
 Changes:
 1. installLogDatabase has been changed from .zip file to .jar file.
 2. SuperLogging: If the log database is broken, the log methods will
 not try to access the log database. It is consistent with the document
 now.
 3. SuperLogging will not read system properties now. You can put log
 database parameters in SuperLoggingEJB's deployment descriptor.
 
 Version 1.10 Feb., 2001
 Enhancement:
 1. Re-written PeekPoke with Save/Restore functions.
 2. New SuperComponent: SuperStress for stress test.
 3. Set a mark at the highlighted line on the Source Code
 Panel (as a work-a-round for JDK 1.3).
 4. Add support for WebLogic 6.0
 Bug fix:
 1. Uninstall bean does physically delete the jar file now.
 2. WebLogic51 Envoy may not always list all JNDI names. This is fixed.
 
 Version 1.00 Oct., 2000
 Enhancement:
 1. Support Universal server (virtual all EJB servers).
 2. Add Lost and Found for JNDI names, in case you need it.
 3. JNDI ComboBox is editable now, so you can PeekPoke not listed JNDI
 name (mainly for Envoys which do not support JNDI list).
 
 Version 0.90: Sept, 2000
 Enhancement:
 1. PeekPoke supports arbitrary objects (except for Vector, Hashtable
 and alike) as input values.
 2. Reworked help documents.
 Bug fix:
 1. Clicking Cancel button on Pace Panel set 0 to pace. It causes
 further time-out.
 2. MDI related bugs under JDK 1.3.
 
 Version 0.80: Aug, 2000
 Enhancement:
 1. With full-featured SuperLogging.
 
 Version 0.72: July, 2000
 Bug fix:
 1. Ignore unknown objects, so Weblogic5.1 can show JNDI list.
 
 Version 0.71: July, 2000
 Enhancement:
 1. Re-worked peek algorithm, doing better for concurent use.
 2. Add cacellable Wait dialog, showing Super is busy.
 3. Add Stop button on Peek Panel.
 4. Add undeploy example button.
 Bug fix:
 1. Deletion on Peek Panel may cause error under JDK 1.3. Now it works
 for both 1.2 and 1.3
 
 Version 0.70: July, 2000
 Enhancement:
 1. PeekPoke EJBs without programming.
 Bug fix:
 1. Did not show many windows under JDK 1.3. Now it works for both 1.2
 and 1.3
 Changes:
 1. All changes are backward compatible, but you may need to recompile
 monitor windows defined by you.
 
 Version 0.61: June, 2000
 Bug fix:
 1. First time if you choose BUFFER as logging device, message will not
 show.
 2. Fixed LoggingPanel related bugs.
 
 Version 0.60: May, 2000
 Enhancement:
 1. Add DATABASE as a logging device for persistent logging message.
 2. Made alertInterval configurable.
 3. Made pace for tracing configurable.
 Bug fix:
 1. Fixed many bugs.
 
 Version 0.51, 0.52 and 0.53: April, 2000
 Enhancement:
 1. Add support to Weblogic 5.1 (support for Logging/Tracing and
 user defined GUI window, not support for regular monitoring).
 Bug fix:
 1. Context sensitive help is available for most of windows: press
 F1.
 2. Fix installation related problems.
 
 Version 0.50: April, 2000
 Enhancement:
 1. Use JavaHelp for help system.
 2. Add shutdown functionality for J2EE.
 3. Add support to Weblogic 4.5 (support for Logging/Tracing and
 user defined GUI window, not support for regular monitoring).
 Bug fix:
 1. Better exception handling for null Application.
 
 Version 0.40: March, 2000
 Enhancement:
 1.New installation program, solves installation related problems.
 2. Installation deploys AceletSuperApp application.
 3. Add deploy/undeploy facilities.
 4. Add EJB and application lists.
 
 Change:
 1.SimpleMonitorInterface: now more simple.
 
 Version 0.30: January, 2000
 Enhancement:
 1. Add realm support to J2EE
 2. Come with installation program: you just install what you want
 the first time you run Super.
 
 Version 0.20: January, 2000
 Enhancement:
 Add support to J2EE Sun-RI.
 Change:
 1. Replace logging device "file" with "buffer" to be
 compliant to EJB 1.1. Your code do not need to change.
 
 Version 0.10: December, 1999
 Enhancement:
 1. provide SimpleMonitorInterface, so GUI experience is
 not necessary for developing most monitoring applications.
 2. Sortable table for table based windows by mouse
 click (left or right).
 
 Version 0.01 November., 1999:
 1. Bug fix: An exception thrown when log file is large.
 2. Enhancement: Add tour section in Help information.
 
 Version 0.00: October, 1999
 
 Thanks.
- 7
 - JTextArea SizeHello, I'm writing a java app for a pda and as the screen size is tiny I
 want to write a MiniDialog class. I only want a JTextArea and an OK button
 on it and I want the JTextArea to fit the size of the modal dialog.
 
 If I pass in a long line of text then the JTextArea appears to get wider and
 I have to scroll across the screen to see the text. I want it to wrap onto
 the second line etc.
 
 I must be doing something stupid!
 
 Thanks, Kevin.
 
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
 
 public class MiniDialog {
 
 JDialog dialog=new JDialog(new JFrame(),"Info",true);
 
 public MiniDialog() { }
 
 public void show(String label) {
 Container c=dialog.getContentPane();
 
 JButton ok=new JButton("OK");
 dialog.getRootPane().setDefaultButton(ok);
 
 ok.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 dialog.dispose();
 }
 });
 
 JTextArea txt=new JTextArea(5,20);
 txt.setEditable(false);
 txt.append(label);
 
 JScrollPane scroll=new JScrollPane(txt);
 scroll.setSize(1,1);
 
 dialog.setSize(200,200);
 dialog.setLocation(20,40);
 c.add(scroll,BorderLayout.CENTER);
 c.add(ok,BorderLayout.SOUTH);
 dialog.show();
 }
 }
- 8
 - code conventions - validationAnyone know of a code validator that follows this:
 
 http://java.sun.com/docs/codeconv/html/CodeConvTOC.doc.html
 
 TIA
 --
 Mike W
- 9
 - Curb Your Spam RageRoedy Green wrote:
 
 Leave it to good ol' Roeds to feel the spammers' pain.
 
 [snippysnipsnip]
- 10
 - create a bean on webapp startupHi,
 
 Unsuccessfully web browsing makes me come here.
 
 I wonder if it's possible to create a bean (used by <jsp:use-bean>) on
 startup, also through web.xml. I've seen it is possible to launch a
 servlet with <load-on-startup> xml element, but, as I believe I've
 understood, it is NOT a persistent object.
 
 So, i'm asking if :
 - is this possible to create a persistent object through a servlet
 lauched at startup ?
 - is there a different way ?
 
 Regards,
 
 --
 Mounir
- 11
 - jdk1.6 - has no applet pluginHello
 I cannot find the plugin that, I thought, should
 come with jdk1.6.
 
 Have I lost my mind or have they hidden it somewhere?
 
 Thanks for your time.
 dkr
- 12
 - Tomcat4: Default Page Encoding UTF8Hi,
 
 I am using Tomcat 4.1.27 running servlets which worked
 perfectly under Tomcat 3. The problem is: (unfortunately)
 the special characters (like german umlaute) are not
 html encoded. Under tomcat 3 this was no problem, but with
 the new tomcat the page-encoding is wrong. When I manually
 change the page encoding in the browser to utf-8 everything
 is OK. I could now go through all servlets and change the
 content-type to charset utf-8, but I try to avoid this.
 (as there where not written by me).
 
 Is there any possiblilty the change the default page encoding
 to utf-8? (like in the server.xml or so)
 
 Thank you for any help!!!
 
 Christian
- 13
 - actionPerformed programmaticallyHi
 
 Is it good way to programmatically call actionPerformed?
 NewAction action = new NewAction();
 action.actionPerformed(null); //maybe instead null should be something
 else, but what?
 
 Best Regards
 Greg
- 14
 - I can not get data from Table cellHi every one
 I try to get String from cell in jTable
 every time I try to get data from cell I only get null
 and this is my code
 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
 Class.forName("com.mysql.jdbc.Driver");
 Connection con;
 con = DriverManager.getConnection("jdbc:mysql://localhost/
 uni","root","java");
 Statement stat = con.createStatement();
 ResultSet result;
 result = stat.executeQuery("select max(no) from student_info_table");
 result.next();
 int mx, c;
 mx = result.getInt(1);
 mx = mx +1;
 
 String inserting_Data = "insert into fee_part_table (feeNO, feeParts,
 fee_1st_part) values(?, ?, ?)";
 PreparedStatement ps = null;
 ps = con.prepareStatement(inserting_Data);
 
 ps.setInt(1, mx);
 ps.setInt(2, c);
 
 String st;
 st = String.valueOf(jTable2.getValueAt(0, 0));
 
 JOptionPane.showMessageDialog(this, st);
 
 ps.setString(3, String.valueOf(jTable2.getValueAt(0, 0)));
 ps.executeUpdate();
 ///////////////////////////////////////////////
- 15
 - CLASSPATH?WinXP Pro, JRE 1.4.2_03
 
 I've just discovered that according to my Environment Variables section of
 the System icon (Control Panel), I don't have a CLASSPATH variable. I used
 SET from a command prompt to confirm that this is the case. No such
 variable. So how come I can run basic (UI) Java programs OK? Shouldn't
 CLASSPATH be pointing to the jar file containing these basic classes I'm
 using? The problem is, JMF installation instructions seem to say I should
 add the path to the jar file to CLASSPATH, but how can I if I have no such
 variable? {:v)
 
 Am I missing something?
 
 --