java-programmer >>Tomcat4 RMI class loading bermuda triangle

Tomcat4 RMI class loading bermuda triangle

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- 1
  - Applet caching in IE5 - permanently!
    I have the same problem and I posted the question a couple of weeks ago
    but no one seemed to care or know what happened.
    
    > -----Original Message-----
    > From: email***@***.com (Dave) [SMTP:email***@***.com]
    > Posted At: Wednesday, July 16, 2003 5:43 AM
    > Posted To: comp.lang.java.programmer
    > Conversation: Applet caching in IE5 - permanently!
    > Subject: Applet caching in IE5 - permanently!
    >
    > IE seems to be caching applet classes forever. The 'CTRL-REFRESH'
    > thing used to work (I've been doing that for years). But just recently
    > (about 1 month ago), this stopped working. Deleting temporary files,
    > restarting IE and even rebooting doesn't seem to flush the cache. I'm
    > really confused - where could it be caching it?
    >
    > The only thing I can think of is that a 'Windows update' has installed
    > an IE patch that has broken something.
    >
    > Has anyone else experienced this? Am I going mad?
- 2
  - Change look of disabled JButtonHello
    
    How can I change the look of a disabled JButton? I have made a boardgame
    with a brown background and brown buttons. I have also put an imageicon on
    the buttons that has a colored image on it. When I disable the buttons, the
    colored image is turned into grey which screws up the look of my game.
    
    Can I change the grey color on a disabled button? Or do I have to keep it
    enabled, and attach another imageicon with different color to show the user
    he can't click the button?
    
    Also, I can sometimes see a blue/gray line around my buttons. I want to get
    rid of it, so I guess it has something to do with setBorder, but I can't
    find it.
    
    Thx,
    Oswald
- 3
  - Tomcat classpath and servlets outside of WEB-INFHi,
    Does anybody know if it is possible to execute servlets outside the
    WEB-INF directory? Somebody at work thinks that setting the classpath
    would help. But I have had no luck so far. I'm currently on a
    Win2000 box running Apache, Tomcat 4.1.18, j2sdk 1.4.2. And I found
    out (to my dismay) that symbolic linking doesn't work with Windows. I
    don't even know if symbolic linking would work if it was a linux box.
    People at work say that Tomcat has worked and it was executing
    servlets outside the WEB-INF directory. They are very sure on this
    point. But it broke, and they decided to deleted the entire
    installation (conf file and all). And the person who got it to work
    is no longer here. So I'm at square one. Jserv had been running the
    servlets, but the company wants to move forward. The servlets had
    been mapped to Jserv through the classpath.
    
    Any help or ideas would be greatly appreciated.
    Jim
- 3
  - Cannot Find My API classThere goes the error:
    
    org.apache.jasper.JasperException: Unable to compile class for JSP
    
    An error occurred at line: 0 in the jsp file: /time.jsp
    
    Generated servlet error:
    [javac] Compiling 1 source file
    
    F:\JAVA\TomCat41\work\Standalone\localhost\bigj\time_jsp.java:41:
    cannot resolve symbol
    symbol : class TimeFormatterBean
    location: class org.apache.jsp.time_jsp
    TimeFormatterBean formatter = null;
    ^
    
    How can be seen, it cannot locate the TimeFormatterBean class. I've
    placed my application in the dir:
    
    %CATALINA_HOME%\webapps\bigj\
    
    and the class in here:
    
    %CATALINA_HOME%\webapps\bigj\WEB-INF\classes
    
    so.. y dam it ain't working?
- 4
  - Writing and running files from a Java/AspectJ application.I'm creating an add-on to windows that will let me create files and run
    basic functions such a image editing, both built in and on the hard
    drive of a ftp server. If anyone could help me it would be wonderful.
    I am planning to use the Eclispe SDK woth the AspectJ plugin. I have
    the basic functions set up word editing but I need to know how to run
    .exe files on the hard drive.
- 4
  - JPanel doenst growHey, I am beginning Java Student with a Java Problem. I looked on the
    Internet but didn't find my answer anywhere, maybe you guys could help ?
    
    I have a:
    
    JFRAME --> Container+GridBayLayout
    
    Container+GridBayLayout --> JPanel options
    --> JScrollpanel
    
    JScrollpanel --> add(new RectangleGroup());
    
    //A piece of the entire class RectangleGroup:
    -------------------
    public class RectangleGroup extends JPanel
    {
    public void paintComponent(Graphics g)
    {
    this.g = g;
    
    super.paintComponent(g);
    
    //A lot of THESE Things
    g.drawRect(150,100,100,10);
    }
    }
    -------------------
    The problem is that I dont get a scrollbar when I draw a rectangle that is
    out of sight in the browser.
    
    A have uploaded a picture of it here:
    http://www.denbreejen.net/public/School/dnaproject2/browser_problem.gif
    
    Wouter
    
    --
    Message posted via http://www.javakb.com
- 5
  - ANyone ever read a MS publisher file in JAVAHello all,
    I need to load a ms pub file to my app server and then convert it to HTML.
    
    I realize this is out there, but has anyone ever heard of this been done?
    
    Thanks
- 5
  - Stateless Session Beans and a Stateful Singleton? (Sharing dataI am interested in solving the same problem.
    I currently have a solution involving JMX and WebLogic cluster.
    1-create dynamic Mbean with synchronized methods
    2-register with WL admin server as MBean agent/manager
    3-all managed servers/users in cluster have access to this singleton
    4-as clients log in/out they can invoke addUser/deleteUser methods on
    dynamic mbean. They can also read currentUserCount.
    
    PROBLEM:Single point of failure on admin server.
    Looking for a simpler solution as you described above, OR
    figuring out how to have dynamic MBean replicated in cluster so that each
    managed server uses a local replicated copy--not sure how to achieve this
    yet...
- 6
  - WSIF and format:typemapping questionsHi to all of you,
    I have to use wsif to call java, ejb and jms bindings. I wonna use
    <format:typeMapping> extension to convert from xml to my custom Java
    object. But somehow I cann not. Samples in WSIF zip are not enough to
    solve my problems. Could someone give good tutorial or share his/her
    experiense.
    
    10x jajoo :)
- 7
  - CFP - IT Underground 2006, Prague, Czech RepublicHello,
    
    I'd like to announce the call for papers for the IT Underground 2006, a
    two-day conference organized by Software Conferences and hakin9.lab team in
    23-24 February 2006, Prague, Czech Republic.
    
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    Holz, Joanna Rutkowska, Michael Shema, Piotr Sobolewski, Michal Szymanski,
    Paul Wouters, Rakan El-Khalil, Wojciech Dworakowski, K.K. Mookhey, Pawel
    Krawczyk.
    
    The dead line for lecture proposals is the 15th of January, 2006.
    
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    - supervising and directing the overall progress of the conference.
    
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    Piotr Sobolewski
    email***@***.com
- 9
  - struts: Multipage formHi,
    
    I'm collection data across several pages using one Form per page. The scope of
    each form is set to session. Let's say I have form1, form2 and form3 and the
    corresponding action classes. In the jsp corresponding to form3 I can access
    form1 using form1 as bean name.
    But how can I access form1 from the Action class corresponding to form3?
    
    Hope that was not to confusing.
    
    Thanks in advance,
    phi
- 11
  - Problem with JDBC-ODBC connection to MS Access 2000I am trying to use JDBC-ODBC bridge to connect to a Access 2000
    database on a Windows 2000 machine. I have set up
    the database using the Data Sources utility in Windows 2000. I am
    using the Java(TM) 2 SDK, Standard Edition
    Version 1.4.2_01. The code snippet from an example I found is:
    
    import java.sql.*;
    import javax.swing.JOptionPane;
    
    public class BookDB{
    private static Connection connection;
    private static Statement scrollStatement;
    private static ResultSet books;
    
    public static void connect() throws ClassNotFoundException,
    SQLException {
    
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    String url = "jdbc:odbc:MurachBooks";
    String user = "Admin";
    String password = "";
    connection = DriverManager.getConnection(url, user, password);
    }
    
    When I complie I get the following error:
    
    BookDB.java [10:1] cannot resolve symbol
    symbol : method forName (java.lang.String)
    location: class Class
    try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    ^
    1 error
    Errors compiling BookDB.
    
    I have looked at all of the possible sources of information I can
    think of to find an answer to my problem.
- 13
  - How often to get a reference to my cached bean?Hi I have an entity bean which caches data. It could sit in the
    container for a very long time.
    
    This entity bean has references to other similary beans that cache.
    Should I get a single reference to the other beans once - on startup or
    should I lookup the bean every time I need it?
    
    MyClassHome refhome = MyHomeHelper.getHome();
    MyCacheClass reference = refhome.find();
    
    The only reason I can think of for looking it up may be if the resource
    (bean) moved to another server due to a crash/failover etc?
    
    thanks
    
    Tim
- 14
  - Jruby and script loadingI am looking for different ways to load jruby scripts from java. Has
    anyone been doing this. JRuby 1.0 and Java 1.6
    
    Berlin Brown
- 16
  - Bug#348398: Make her horny for youThe real trophy for her is what lies in your pants.
    
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    Please don't forget this
    
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    with a subject of "unsubscribe". Trouble? Contact email***@***.com

Author

Message

nihil32

Posted: 2004-6-23 16:42:00

Top

java-programmer, Tomcat4 RMI class loading bermuda triangle Hi every body,
I'm trying to fix this problem for one week and i'm turning crazy
right now.
I have this servlet working perfectly, finding every package i put in
/var/tomcat4/shared/lib except that it doesn't find my RMIServer class
for casting
i get a
[java.lang.ClassNotFoundException] - myRMIServerClass
org.apache.catalina.loader.StandardClassLoader.loadClass(Unknown
Source)
org.apache.catalina.loader.StandardClassLoader.loadClass(Unknown
Source)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:141)

all classes are in the jar with the stub and skeleton (i tried to put
classes in WEB_INF/classes of my servlet but same problem... so i
guess this is not the real problem)

I have set in catalina policy file a:
grant {
permission java.security.AllPermission;
};
to be sure there's no problem of security. i changed the
init.d/tomcat4 script to add -security to the starting line to be sure
that it is started the right way

i used to try the same code with tomcat 3 and i changed to tomcat 4
because of a rmi jni problem reported on mailing lists (i spent so
much time on tomcat4 that i can't remember what was the previous one)
but i can't even get that far with tomcat4

my version is a rpm 4.2.1 for Red Hat

does someone understand what's going on

Sudsy

Posted: 2004-6-23 20:42:00

Top

java-programmer >> Tomcat4 RMI class loading bermuda triangle henri wrote:
<snip>
> [java.lang.ClassNotFoundException] - myRMIServerClass

This will either have everything or nothing to do with your problem.
I note that the class name is not package-qualified. This would
suggest that it's in the default package. Without seeing the source
for the class and the output of 'jar tf <jarfile>' then it's
impossible to say further. It should be noted that class naming
problems are frequently encountered by people new to Java.

Index ‹ java-programmer

Next
- 1
  - Overheads involved in repeated acces to a database using JDBCI have an application that inserts words and their associated values
    into a hashtable. If the word already exists in the hashtable, the
    value associated with the word is increased in the hashtable. When the
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- 2
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    What I mean when I say "barebones" is this: I have, for example, this class:
    
    ----8<--------8<--------8<--------8<--------8<--------8<--------8<----
    package cl.cl.cl;
    
    import cl.lc.*;
    import java.util.*;
    
    public class demo {
    
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- 4
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  - grant execute file permission to a JSP? I'm trying to run an external command from a JSP and instead get
    the exception:
    
    java.security.AccessControlException: access denied (java.io.FilePermission /usr/bin/killall execute)
    
    which seems clear enough. (The code runs and works from within a
    console application.)
    
    The OS is Linux and the application server is the one that
    installs with the J2EE sdk from Sun. It is installed within my
    home directory and runs under my user ID exposing deployed JSPs
    at http://localhost:8080/
    
    I've added the following code to both my ~/.java.policy file and
    the ${java.home}/jdk/jre/lib/security/java.policy file:
    
    grant codeBase "http://localhost:8080/-" {
    permission java.io.FilePermission "/usr/bin/killall", "execute";
    permission java.security.AllPermission;
    };
    
    Neither of the entries in either of the files makes any
    difference. The only change I've made that has any affect at all
    is to change the command from 'killall ...' to '/usr/bin/killall
    ...' which changed the file reference in the exception from "<<ALL
    FILES>>" to "/usr/bin/killall".
    
    Each time I made a change in the policy files, I restarted the
    application server to make sure it was using the new file contents.
    
    I'm clearly overlooking something or have something wrong. Any
    suggestions on how to resolve this would be most welcomed!
    
    thanks,
    hank
- 15
  - executing data needs mprotect with PROT_EXECThis is a multi-part message in MIME format.
    I've been trying to run some FreeBSD4 packages
    inside a jail on a FreeBSD6 / amd64 box; and I've
    hit a problem with ports/jdk.
    
    A couple of places the VM uses an array of
    integers, puts code in it, and executes it.
    
    This doesn't work on machines where the CPU
    honors the PROT_EXEC settings; this can be
    different on different machines (depending on
    BIOS settings probably).
    
    The right fix is to call mprotect() from jdk to allow
    execution of the memory in question, something like this:
    
    --- ../../hotspot/src/os_cpu/bsd_i486/vm/os_bsd_i486.cpp Tue Feb
    14 21:12:46 2006
    +++ ../../hotspot/src/os_cpu/bsd_i486/vm/os_bsd_i486.cpp Wed Feb
    15 16:30:49 2006
    @@ -561,6 +562,9 @@
    }
    #else
    static void (*fixcw)(void) = CAST_TO_FN_PTR(void (*)(void),
    code_template);
    +
    + ::mprotect((void *)code_template, sizeof(code_template),
    + PROT_EXEC | PROT_READ | PROT_WRITE);
    #endif
    
    fixcw();
    --- ../../hotspot/src/cpu/i486/vm/vm_version_i486.cpp Thu Sep 11
    03:40:14 2003
    +++ ../../hotspot/src/cpu/i486/vm/vm_version_i486.cpp Tue Feb 14
    23:34:40 2006
    @@ -9,6 +9,8 @@
    # include "incls/_precompiled.incl"
    # include "incls/_vm_version_i486.cpp.incl"
    
    +#include <sys/types.h>
    +#include <sys/mman.h>
    
    int VM_Version::_cpu;
    int VM_Version::_cpuFeatures;
    @@ -145,6 +147,10 @@
    ResourceMark rm;
    // Making this stub must be FIRST use of assembler
    CodeBuffer* c = new CodeBuffer(address(stubCode), sizeof(stubCode));
    +
    + ::mprotect((void *)stubCode, sizeof(stubCode),
    + PROT_EXEC | PROT_READ | PROT_WRITE);
    +
    VM_Version_StubGenerator g(c);
    getPsrInfo_stub = CAST_TO_FN_PTR(_getPsrInfo_stub_t,
    g.generate_getPsrInfo());
    
    patches also attached in case the mail client mangles them :-)
    
    - Arne H. J.