java-programmer >>"no cmp field defined in cmp ejb"

"no cmp field defined in cmp ejb"

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- 1
 - .Net: 3 Years of the 'Vision' Thingasj wrote:
 > Ben wrote:
 >>
 >> Here here!
 >
 >
 > i believe that's "hear! hear!"
 >
 > and i ask again:
 >
 > "really? so where are most of the c#/.net people coming from? what
 > with all the questions from vb and other microsoft developers around
 > here, sure sounds like a mass migration of the herd from vb and other
 > older microsoft tech to c# and other .net.....and that sounds like
 > pure cannibalism of old by the new to me."
 
 I think you're clutching at straws here, so what if people using dotnet were
 using VB6 or C++ in the past to do development?
- 3
 - hasNext?What is hasNext? I know you use it when you are reading from a file
 and it will stop when it has nothing more to read, but how would you
 use it? I have seen a couple of different examples of it, but all
 they do is make me more confused. I just can't seem to understand
 it...can anyone help?
- 3
 - Equivalent items in JavaI know a bit in Windows (.net) development. I would like to find out
 the equivalent component of the below components. Anyone has
 suggestions?
 
 ASP -->
 VB.NET, C# -->
 MS SQL -->
 IIS -->
 NT server -->
 
 THX a lot!
- 3
 - Tool to draw class relatinoship diagrams from a package ?> Do you know a free package that I could use to draw the
 > inheritance/implementation relationships from a package ? Something
 > like this: I give it the top dir for a package and it produces a
 > diagram.
 
 there is one plugin for Intellij IDEA that do such things.
 
 ____________
 
 http://reader.imagero.com the best java image reader.
- 5
 - file-include question.."maya" <email***@***.com> wrote...
 
 > if I'm in a webapp called "photoblog", for example, if I do
 >
 > <%@ page errorPage="/errHandler.jsp"%>
 >
 > it works fine; if I do
 >
 > <%@ page errorPage="/photoblog/errHandler.jsp"%>
 >
 > I get an error..
 > (this happens both on my personal stuff in Tomcat and my stuff @ work
 > on weblogic..)
 
 This is handled by the JSP container, i.e. on the server side.
 
 The path is hence relative to the JSP application.
 
 > within same webapp I have:
 >
 > <link rel="stylesheet" type="text/css"
 > href="/photoblog/css_default.css">
 >
 > for this one I do need webapp-name in path, otherwise it does not read css
 > stylesheet..
 
 css is not JSP includes, but is part of the plain webbrowsing, i.e. handled
 from the *client* side.
 
 css is "requested for" by the the browser, i.e. the path is relative to the
 visible url.
 
 > can someone enlighten me here?
 
 I hope I have.
 
 /// Bjorn A
- 5
 - j2ee request resource is not available hello1Hi all,
 I have found a solution to a problem that I would like to share.
 
 I am running WindowsXP and J2EE sdk 1.3.1.
 I was trying to run the Hello1 servlet example from the J2EE examples
 from sun. I found this error message: j2ee request resource is not
 available
 
 Then I solved this problem by opening the application in deploytool:
 Filling in the following fields:
 Hello1App: WebContext-> WAR File = Hello1WAR; ContextRoot = hello1
 GreetingServlet -> aliases = /greeting
 ResponseServlet -> aliases = /response
 
 This solved the problem and it was running fine.
 
 Hope it helps,
 Satyajit
- 5
 - Websphere session persistence gets "protocol violation" using oracle jdbc driverHi,
 
 We use oracle (8.1.7) as the session persistence database for our
 websphere 3.5.4 application server. After 15 min of running a stress
 test, we get the foll. exception. Any idea whats going wrong?
 
 thanks,
 
 Chinmay
 
 java.sql.SQLException: Protocol
 violation
 at java.lang.Throwable.fillInStackTrace(Native Method)
 at java.lang.Throwable.<init>(Throwable.java:94)
 at java.lang.Exception.<init>(Exception.java:42)
 at java.sql.SQLException.<init>(SQLException.java:43)
 at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:114)
 at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:156)
 at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:803)
 at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:549)
 at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1311)
 at oracle.jdbc.ttc7.TTC7Protocol.executeFetch(TTC7Protocol.java:661)
 at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:1320)
 at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1232)
 at oracle.jdbc.driver.OracleStatement.doExecuteWithBatch(OracleStatement.java:1353)
 at oracle.jdbc.driver.OracleStatement.doExecute(OracleStatement.java:1760)
 at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1805)
 at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:320)
 at com.ibm.ejs.cm.cache.CachedStatement.executeUpdate(CachedStatement.java:314)
 at com.ibm.ejs.cm.proxy.PreparedStatementProxy.executeUpdate(PreparedStatementProxy.java:235)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.ejbStore(BackedHashtable.java:2564)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.storeSession(BackedHashtable.java:2272)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.put(BackedHashtable.java:2958)
 at com.ibm.servlet.personalization.sessiontracking.DatabaseSessionContext.sync(DatabaseSessionContext.java:112)
 at com.ibm.servlet.personalization.sessiontracking.SessionData.releaseSession(SessionData.java:260)
 at com.ibm.servlet.engine.srt.SRTSessionAPISupport.finish(SRTSessionAPISupport.java:190)
 at com.ibm.servlet.engine.srt.SRTConnectionContext.finishConnection(SRTConnectionContext.java:103)
 at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:102)
 at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
 at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:106)
 at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:160)
 at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:300)
 
 We also get another exception below the above one in the trace log:
 
 StatementProx E Exception closing statement
 
 com.ibm.ejs.cm.exception.IllegalConnectionUseException: Error:
 Connection is being used in a way that violates the architecture
 at java.lang.Throwable.fillInStackTrace(Native Method)
 at java.lang.Throwable.<init>(Throwable.java:94)
 at java.lang.Exception.<init>(Exception.java:42)
 at java.sql.SQLException.<init>(SQLException.java:82)
 at com.ibm.ejs.cm.portability.PortableSQLException.<init>(PortableSQLException.java:35)
 at com.ibm.ejs.cm.exception.IllegalConnectionUseException.<init>(IllegalConnectionUseException.java:26)
 at com.ibm.ejs.cm.proxy.Proxy.close(Proxy.java:154)
 at com.ibm.ejs.cm.proxy.StatementProxy.__close(StatementProxy.java:61)
 at com.ibm.ejs.cm.proxy.StatementProxy.close(StatementProxy.java:216)
 at com.ibm.ejs.cm.proxy.Proxy.close(Proxy.java:76)
 at com.ibm.ejs.cm.proxy.ConnectionProxy.close(ConnectionProxy.java:645)
 at com.ibm.ejs.cm.proxy.ConnectionProxy.connectionDestroyed(ConnectionProxy.java:97)
 at com.ibm.ejs.cm.pool.ConnectO.fireConnectionDestroyed(ConnectO.java:1500)
 at com.ibm.ejs.cm.pool.ConnectO.destroy(ConnectO.java:741)
 at com.ibm.ejs.cm.pool.ConnectO.translateException(ConnectO.java:1134)
 at com.ibm.ejs.cm.proxy.ConnectionProxy.translateException(ConnectionProxy.java:177)
 at com.ibm.ejs.cm.proxy.PreparedStatementProxy.translateException(PreparedStatementProxy.java:484)
 at com.ibm.ejs.cm.proxy.PreparedStatementProxy.executeUpdate(PreparedStatementProxy.java:238)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.ejbStore(BackedHashtable.java:2564)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.storeSession(BackedHashtable.java:2272)
 at com.ibm.servlet.personalization.sessiontracking.BackedHashtable.put(BackedHashtable.java:2958)
 at com.ibm.servlet.personalization.sessiontracking.DatabaseSessionContext.sync(DatabaseSessionContext.java:112)
 at com.ibm.servlet.personalization.sessiontracking.SessionData.releaseSession(SessionData.java:260)
 at com.ibm.servlet.engine.srt.SRTSessionAPISupport.finish(SRTSessionAPISupport.java:190)
 at com.ibm.servlet.engine.srt.SRTConnectionContext.finishConnection(SRTConnectionContext.java:103)
 at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:102)
 at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
 at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:106)
 at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:160)
 at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:300)
- 7
 - Can't locate JavaxHi,
 
 I am using DrJava, and I am writing a program that has the following
 statement:
 
 import javax.swing;
 
 It gives me this error when compiled:
 
 File: C:\Program Files\DrJava\CustomJFrame.java [line: 1]
 Error: package javax does not exist
 
 I did set my classpath variable to:
 
 c:\j2sdk1.4.2\lib\tools.jar;C:\j2sdk1.4.2_01\src\javax
 
 where C:\j2sdk1.4.2_01\src\javax is where javax is located.
 
 What am I doing wrong?
- 10
 - Can't avoid "References to generic type List<E> should be parameterized" warning here can I ?Hi,
 I'm writing some kind of gateway between 2 packages, whose a
 few classes have the same name (I need to bind these classes).
 
 So I'm retrieving the attributes of my source class1 and set my
 equivalent class2 in the other pkg with these attributes when
 methods names -and attributes- match.
 
 Excerpt from my method:
 1 public my.persistent.Pst mapFromProtocol(my.protocol.Pst src)
 2 {
 3 my.persistent.Pst target = new my.persistent.Pst();
 4 for (Iterator<my.protocol.Remark> it =
 src.getRemark().iterator(); it.hasNext(); )
 5 target.getRemark().add(it.next());
 6
 7 ... //many other attributes/objects to set too
 8
 9 return target;
 10 }
 
 In RAD the line 5 is underlined in yellow and it says "Type safety:
 The method add(Object) belongs to the raw type List. References
 to generic type List<E> should be parameterized".
 
 Is there a way to avoid this warning in my case, as I can't
 instantiate
 a List<Remark> lr = new ArrayList() of course... (because I have no
 method setRemark() in target)
 
 Thanks.
 Regards,
 Seb
- 10
 - rs-232Anyone know how to echo characters over an rs-232 serial interface? Thanks.
 -Sean M. Tucker
- 11
 - AGLOCO- this worries GoogleHi,
 
 AGLOCO- this worries Google
 Bill Gates thinks Google should be worried!
 -------------------------------------------
 You must have heard by now about Agloco and how many people think it
 is going to be bigger than Google... Now Bill Gates is on record
 saying they have a great business model and that Google should be
 worried.
 
 Google search result produce - 1,400,000 web pages for Agloco.
 
 Google makes billions of $$$ and keeps it all for itself... Agloco
 one
 day is going to also make billions of $$$ except it will be completely
 shared out to its members!
 
 You make money with Agloco by using your computer as you would
 normally!
 
 Plus Agloco has a great referral pakage!
 So start building your network!
 
 Join AGLOCO - Own the Internet! click on this...
 
 www.agloco.com/r/BBCD7223
 
 It's all over the blogosphere and Bill Gates has been quoted as
 saying he believes it "will be the next big thing to hit the
 internet", so
 what is Agloco and will they really pay you for surfing the net?
 
 I too was sceptical when I heard about it but after spending a few
 hours googling and reading about it, I have not only come round to the
 idea but am now thinking it could really work and could really make
 us (that's me and all of you who are reading this) some money.
 
 regards,
 
 Ketan Arora
 www.agloco.com/r/BBCD7223
- 14
 - Simple java question...Hi guys,
 please help me with this simple java question.
 I'm developing a jsf application but i have a java question.
 Suppose i have an authentication bean with 3 attributes,login,password
 and team that load the values inserted in a login page.
 In another bean i have a method that performs inserting an experiment
 into a db.
 My prepared statement is like...
 
 pst2.setString(1, name);
 pst2.setString(2, team);
 pst2.setString(3, platform);
 etc...
 
 but i want name is the login attribute and team the team attribute of
 authenticationBean.
 How can i pass these values to my pst.2setString?
 
 Please help me
- 14
 - Preventing URLConnection from buffering entire output streamIn my client application, I upload huge files via HTTP.
 The URLConnection class seems to automatically buffer
 the entire contents, then when the OutputStream associated with
 the URLConnection is closed, it computes the length
 and prepends a Content-Length header before actually sending
 any bytes to the web server.
 
 This results in an OutOfMemoryException when the file is huge.
 
 My application uses Transfer-Encoding: chunked, but
 that doesn't help when the entire stream gets buffered anyway.
 
 Is there a way around this without writing my own URLConnection
 clone based on Sockets? Calling flush() on the OutputStream
 seems to have no effect.
 
 I understand that a workaround would be to use the new features
 of Java 1.5, but that's too new to expect end users to have.
 
 Any help would be appreciated.
 
 Thanks!
 
 Mark Riordan
 
 Note: email address in header, email***@***.com, must have
 "NoSpam" removed.
- 14
 - Skyway Builder Rocks! I'm building J2EE apps without writing code....I've been using this development platform for the past month and I
 can't believe how easy it is to build JAVA applications and web
 services. This thing is powerful and a huge time saver. I havn't had
 to write a single line of code yet. If you havn't tried it, do
 yourself a favor and download it..it's FREE.
- 16
 - Why do JARs made with JBuilder 2006 Enterprise not work outside IDE???Hi all,
 
 I have written a program in JBuilder 2006 Enterprise (Win NT, JRE 1.5)
 which works perfectly within the IDE.
 
 However, when I use JBuilder to create a JAR of my project and then try
 to run in from the command line it throws the run-time exception
 below...
 
 Exception in thread "main" java.lang.SecurityException: class
 "Com.package.MyPackage.MyExcpetion"'s signer information does not match
 signer information of other classes in the same package
 
 I have used JARs before but never come across this sort of error, maybe
 worth adding that the program uses JavaMail to send emails.
 
 More confusing, why does it work in JBuilder, but not outside?!?
 
 Any help would be greatly appreciated, i am stumped!
 
 A

Author

Message

Andrea Sansottera

Posted: 2004-7-16 22:26:00

Top

java-programmer, "no cmp field defined in cmp ejb" I'm so boring I know... this is my problem...

I wrote the following entity bean, it rappresents something like this:

primary key id (managed by the container)
foreign key formulation_product (cmp relationship field)
foreign key ingredient (cmp relationship field)

public abstract class FormulationComponentBean implements EntityBean {

/* Relationship field getters */
public abstract FormulationProduct getFormulationProduct();
public abstract Ingredient getIngredient();
/* Relationship field setters */
public abstract void setFormulationProduct(FormulationProduct product);
public abstract void setIngredient(Ingredient ingredient);

[...create methods and others ejb* methods...]

}

When I try to autogenerate database table with Sun Deploytool I get this
error message: "no cmp field defined in cmp ejb".

I really do not need any persistent field, but only relationship field...
should I insert a fake persisten field just to satisfy that silly utility?
Or I am wrong on something?

Thanks a lot for any help...

Index ‹ java-programmer

Next
- 1
 - extends DefaultTableModel ???Hi
 I have an exception of the line "return content.size();" in
 getRowCount(), it said the vector content is null. But if i extends
 the AbstractTableModel rather than DefaultTableModel, no exception,
 please tell me why?
 
 thanks
 from Peter
 
 public class MyTableModel extends DefaultTableModel {
 String columnNames[] = {"1", "2", "3", "4", "5"};
 Vector content=new Vector();
 
 public MyTableModel() {
 }
 
 public int getColumnCount() {
 return columnNames.length;
 }
 
 public String getColumnName(int col) {
 return columnNames[col];
 }
 
 public Object getValueAt(int row, int column) {
 "Peter"
 }
 
 public int getRowCount() {
 return content.size();
 }
 
 }
- 2
 - window basis..Jep!
 
 I think i need a good tutorial here,
 would please receive few links, in need to get familiar with window opening,
 sizening and drawing images on it..
 
 Yours : JariTapio
 Homepage : www.EuroJari.net
 EMail : email***@***.com
- 3
 - Debugging an applet or JApplet in an IDE?Is it possible to debug an applet or JApplet in an IDE?
 
 How?
- 4
 - Secure FTP API for Java ReleasedMyJavaWorld.com is pleased to announce the release of Secure FTP API
 for Java, an API that allows you to add secure file transfer
 capabilities to your Java applications. Some of the features of Secure
 FTP API for Java are:
 
 Complete implementation of the File Transfer Protocol as defined RFC
 959
 
 Support for secure file transfer using SSL/TLS as defined in RFC 2228.
 Both Explicit and Implicit SSL connections are supported.
 
 Extendable architecture to support legacy/non-standard FTP servers
 
 Event notification to notify the connection and transfer evens to
 interested objects.
 
 Support for active and passive data transfers
 
 Support for ASCII and Binary data types
 
 Set the time outs and buffer size to use for the control and data
 connections
 
 And many more...
 
 Check it out at http://www.myjavaworld.com
 
 Regards
 Sai Pullabhotla
- 5
 - my JEditorPane.read() method is never referenced, why?[code]
 public class SimpleHTMLRenderableEditorPane extends JEditorPane {
 
 // borrowed from http://www.java2s.com/Code/Java/Swing-JFC/JEditorPaneandtheSwingHTMLPackage9.htm
 
 protected String getNewCharSet(ChangedCharSetException e) {
 String spec = e.getCharSetSpec();
 if (e.keyEqualsCharSet()) {
 // The event contains the new CharSet
 return spec;
 }
 
 // The event contains the content type
 // plus ";" plus qualifiers which may
 // contain a "charset" directive. First
 // remove the content type.
 int index = spec.indexOf(";");
 if (index != -1) {
 spec = spec.substring(index + 1);
 }
 
 // Force the string to lower case
 spec = spec.toLowerCase();
 
 StringTokenizer st = new StringTokenizer(spec, " \t=", true);
 boolean foundCharSet = false;
 boolean foundEquals = false;
 while (st.hasMoreTokens()) {
 String token = st.nextToken();
 if (token.equals(" ") || token.equals("\t")) {
 continue;
 }
 if (foundCharSet == false && foundEquals == false
 && token.equals("charset")) {
 foundCharSet = true;
 continue;
 } else if (foundEquals == false && token.equals("=")) {
 foundEquals = true;
 continue;
 } else if (foundEquals == true && foundCharSet == true) {
 return token;
 }
 
 // Not recognized
 foundCharSet = false;
 foundEquals = false;
 }
 
 // No charset found - return a guess
 return "8859_1";
 }
 
 public void read(InputStream in, Object desc) {
 System.out.println("do you see this?");
 try {
 super.read(in, desc);
 } catch (ChangedCharSetException e) {
 String charSet = getNewCharSet(e);
 System.out.println("charSet = " + charSet);
 try {
 in.reset();
 InputStreamReader reader = new InputStreamReader(in,
 charSet);
 super.read(reader, desc);
 } catch (ChangedCharSetException ee) {
 System.out.println("huh?");
 } catch (IOException ee) {}
 } catch (IOException e2) {}
 }
 
 }
 [/code]
 
 Per reference in http://kickjava.com/348.htm I am having to overwrite
 JEditorPane.read() with my own method, I still get
 ChangedCharSetException thrown when it should have been captured and
 you should have at least seen something in output, yet you see noting
 whatsoever except the ChangedCharSetException when you do this line:
 
 [code]
 // browser IS OF TYPE
 SimpleHTMLRenderableEditorPane
 
 browser.read(
 new BufferedReader(new
 StringReader(browser.cleanHTML(getURL()))),
 browser.getDocument()
 ); // SimpleHTMLRenderableEditorPane HAS
 METHOD cleanHTML(URL url) WHICH NEVER THROWS ChangedCharSetException
 [/code]
 
 Why is it that my method appears to never be referenced and the
 default read() method in JEditorPane is referenced instead? Ideas?
 
 Thanks
 Phil
- 6
 - ResourceBundle with Database BackendHi all,
 
 We're busy creating a web application that needs different localization.
 ResourceBundles would probably be the best thing to use for this. However,
 we would like to use a database as the backend for the ResourceBundle.
 This would make changing and adding translated strings much easier. We
 would like our client to be able to do this himself, using a front end we
 will write.
 
 From what I understand of ResourceBundles, we would have to create a
 ResourceBundle class for each translation. We'd like to create just one
 subclass of ResourceBundle however, which handles all translations. Is
 this possible? I can't find any examples of how this should work..
 
 thanks for thinking along, please tell me if my question isn't completely
 clear or something like that,
 
 Ilja Booij
 MMS2P B.V.
- 7
 - Java is a third class language.Hi Mark Thornton,
 
 Re: Windows' GDI for easily writing to any raster device
 using essentially the same code,
 regardless of the printer or the screen.
 
 You asserted,
 " Not only does it work well ( in Java )
 it also supports some features ( e.g. anti-aliasing )
 which may not be available on the OS. "
 
 Even if that were true ( and I highly doubt it ),
 Java still couldn't do it with out the OS.
 
 Java Overlays an OS, it doesn't replace it.
 
 Java is a third class language.
 No one would use it if they didn't have other options.
- 8
 - casinos/lasvegas<HTML>
 <HEAD>
 <META NAME="GENERATOR" Content="Microsoft DHTML Editing Control">
 <TITLE></TITLE>
 </HEAD>
 <BODY>
 Las Vegas / Casino domains for sale in <A
 href="http://www.supernet.biz">www.supernet.biz</A> !!!
 ****************************************************
 casinos.com.lv (Casinos Com "Las Vegas")
 slots.lv (Slots "Las Vegas")
 bet.com.lv (Bet Com "Las Vegas")
 nevada.com.lv (Nevada Com "Las Vegas") 
 poker.com.lv (Poker Com "Las Vegas")
 roulette.com.lv (Roulette Com "Las Vegas")
 gambling.com.lv (Gambling Com "Las Vegas")
 blackjack.com.lv (BlackJack Com "Las Vegas")
 jackpot.com.lv (Jackpot Com "Las Vegas")
 videopoker.lv (VideoPoker "Las Vegas")
 videopoker.com.lv (VideoPoker Com "Las Vegas")
 resort.lv (Resort "Las Vegas")
 cash.lv (Cash "Las Vegas")
 
 for details or for MORE domains go to: <A
 href="http://www.supernet.biz">www.supernet.biz</A> 
 
 
 </BODY>
 </HTML>
- 9
 - Jedit: Error about MouseWheelListenerI installed the same Jedit archive on Windows and on HP-UX (with
 JavaVM-1.3). On
 Windows, it runs fine. On Unix, I get the following error message on
 startup:
 
 java.lang.NoClassDefFoundError: java/awt/event/MouseWheelListener
 
 Could it be that something is missing in my CLASSPATH? Where is the
 MouseWheelListener
 supposed to be? I thought this class was added in 1.4, but note that
 the
 installation notes for JEdit say that it can run under Unix with Java
 1.3.
 
 Ronald
- 10
 - Drawing on TabsHi all - I have an application where my main frame has a tabbed interface,
 and each tab has a JPanel.
 
 I would like to draw a line graph on the second tab (the first tab is where
 data is entered) and a bar graph on the second tab.
 
 The problem I have is how to draw on the second or 3rd tabs.
 
 I googled and one solution was to subclass the JPanel and then override the
 paintComponent() method. I tried but it doesn't seem to work. I am probably
 just doing it wrong.
 
 How would I go about defining/extending the JPanel class? or is there some
 other container that would serve this purpose better?
 
 Any help is appreciated.
 
 (remove the +NOSPAM from my email address...)
- 11
 - Unexpected Signal : 11 occurred at PC=0x2845BB2FHi ,
 
 Just reporting this core dump from my web application
 
 Regards
 
 Samuel Jackson
 
 ----------------------------------------------
 
 root@ds226# more hs_err_pid77432.log
 
 Unexpected Signal : 11 occurred at PC=3D0x2845BB2F
 Function=3Dfollow_stack__9MarkSweep+0x3F
 Library=3D/jdk1.4.2/jre/lib/i386/client/libjvm.so
 
 Dynamic libraries:
 0x8048000 /usr/local/jdk1.4.2/bin/java
 0x2806c000 /usr/local/lib/libc_r.so.4
 0x28123000 /jdk1.4.2/jre/lib/i386/client/libjvm.so
 0x2866a000 /usr/local/lib/libstdc++.so.3
 0x286af000 /usr/local/lib/libm.so.2
 0x286ca000 /jdk1.4.2/jre/lib/i386/native_threads/libhpi.so
 0x286d8000 /jdk1.4.2/jre/lib/i386/libverify.so
 0x286f3000 /jdk1.4.2/jre/lib/i386/libjava.so
 0x28714000 /jdk1.4.2/jre/lib/i386/libzip.so
 0x34fb2000 /jdk1.4.2/jre/lib/i386/libnet.so
 0x2804e000 /usr/libexec/ld-elf.so.1
 
 Heap at VM Abort:
 Heap
 def new generation total 2304K, used 256K [0x2c5b0000, 0x2c830000, =
 0x2ca90000)
 eden space 2048K, 0% used [0x2c5b0000, 0x2c5b0000, 0x2c7b0000)
 from space 256K, 100% used [0x2c7f0000, 0x2c830000, 0x2c830000)
 to space 256K, 0% used [0x2c7b0000, 0x2c7b0000, 0x2c7f0000)
 tenured generation total 31080K, used 30993K [0x2ca90000, 0x2e8ea000, =
 0x305b0000)
 the space 31080K, 99% used [0x2ca90000, 0x2e8d4488, 0x2e8d4600, =
 0x2e8ea000)
 compacting perm gen total 14336K, used 14218K [0x305b0000, 0x313b0000, =
 0x345b0000)
 the space 14336K, 99% used [0x305b0000, 0x31392af8, 0x31392c00, =
 0x313b0000)
 
 Local Time =3D Sat Nov 27 13:30:41 2004
 Elapsed Time =3D 63665
 #
 # HotSpot Virtual Machine Error : 11
 # Error ID : 4F530E43505002F1
 # Please report this error to
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- 12
 - deploying multiple instances of same application (.war file) on tomcat 5.5We have a web application running on tomcat 5.5 that works fine when
 deployed independently. However, we would like to deploy multiple
 instances of the same application on the same server. We have built a
 new war file of the same application with a different name including a
 new context file for the application. This new war file also runs fine
 independently but, when deployed along with the original application,
 generates a Java Heap Space error.
 
 Is there a special way to deploy multiple instances of the same
 application on the same server using Tomcat?
 
 Please help us! Thank you!!!
- 13
 - Write PNG from MemoryImageSourceI have an application which dynamically generates images using
 MemoryImageSource to produce a java.awt.Image object. I'd like to be
 able to write these images out as pngs.
 
 I've found the javax.imageio class which will write out pngs, but only
 from a BufferedImage and not from a basic Image. I've not been able to
 find a way to create a BufferedImage from an Image.
 
 Can anyone suggest how I can write out these images?
 
 Cheers
 
 Simon.
- 14
 - Reverse Engineer UML Diagrams From Source CodeI'm looking for a good tool that can automatically generatre UML
 diagrams from source code.
 
 I know Together can do this, but it's rather expensive....
 
 I was hoping for something open source. What are my options? What
 should I be considering? I plan to use it mainly for personal use for
 building medium sized applciations.
 
 I also found this one:
 
 http://jrefactory.sourceforge.net/
 
 Has anyone used it?
 
 TIA,
 cpp
- 15
 - RMI newbieI am tring to learn rmi and having some problems
 
 Why when I call getStockPrice on the client side does it print the starting
 value (1.34) and no the current value that prints out on the server side
 from the System.out.println statements?
 
 public class Stock
 {
 private String Name;
 private double value;
 
 Stock(String name, double val)
 {
 this.Name=name;
 this.value=val;
 }
 
 public double getvalue()
 {
 return value;
 }
 
 public void setvalue(double val)
 {
 this.value=val;
 }
 
 public String getname()
 {
 return Name;
 }
 }
 
 import java.util.*;
 import java.rmi.*;
 import java.rmi.registry.*;
 import java.net.MalformedURLException;
 
 public class StockClient
 {
 public static void main(String args[])
 {
 
 String name="A";
 try {
 StockInterface a = (StockInterface)
 Naming.lookup("rmi://localhost:41111/StockImpl");
 System.out.println("price of "+ name + " is " +
 a.getStockPrice(name));
 }
 catch (Exception re)
 {
 System.out.println(re);
 }
 }
 }
 
 import java.rmi.*;
 import java.util.*;
 import java.rmi.server.*;
 import java.net.MalformedURLException;
 
 public class StockImpl extends UnicastRemoteObject
 implements StockInterface
 {
 private ArrayList<Stock> list;
 public StockImpl() throws RemoteException
 {
 list=new ArrayList<Stock>();
 list.add(new Stock("A",1.34));
 list.add(new Stock("B",0.84));
 list.add(new Stock("C",5.04));
 list.add(new Stock("D",2.03));
 list.add(new Stock("E",5.00));
 list.add(new Stock("F",7.00));
 list.add(new Stock("G",11.34));
 list.add(new Stock("H",2.40));
 list.add(new Stock("I",8.21));
 list.add(new Stock("J",1.45));
 }
 
 public void sim()
 {
 Random rand =new Random();
 Stock temp;
 int abc=rand.nextInt(list.size());
 temp=list.get(abc);
 System.out.println(temp.getvalue() + " rand = "+abc);
 temp.setvalue(temp.getvalue()+rand.nextDouble());
 System.out.println(temp.getvalue());
 }
 
 public double getStockPrice(String Name) throws RemoteException
 {
 Stock temp;
 //System.out.println("List size "+list.size());
 //System.out.println("Name "+Name);
 for(int i=0;i<list.size();i++)
 {
 temp = list.get(i);
 if(Name.compareTo(temp.getname())==0)
 {
 return temp.getvalue();
 }
 }
 return -1.0;
 }
 
 public ArrayList<Stock> getlist()
 {
 return list;
 }
 
 public static void main(String args[])
 {
 //System.setSecurityManager(new RMISecurityManager());
 try {
 StockImpl server = new StockImpl();
 Naming.rebind("rmi://localhost:41111/StockImpl",server);
 System.out.println("Created and registered StockImpl object");
 StockImpl a= new StockImpl();
 while(true)
 {
 a.sim();
 try{ Thread.sleep(100); }
 catch(Exception e) { }
 System.out.println("Out "+a.getStockPrice("A"));
 }
 }
 catch (RemoteException re) { }
 catch (MalformedURLException me) { }
 }
 }
 
 import java.rmi.*;
 
 public interface StockInterface extends java.rmi.Remote
 {
 double getStockPrice(String Name) throws RemoteException;
 }