Question about Java RMI and Eclipse

I would like to create an application with which I can easily connect to a JAVA program, installed on a web server, through JAVA RMI. I have already created a ClientRMI.java and a ServerRMI.java and compiled them. The stubs also have been created properly.
When I run the application outside the Eclipse editor, everything works just fine! However, when I want to integrate the files into a bigger project in Eclipse... and starts running it, he tells me he can't find the stub class or something like that. I need to place this one in the classpath but I don't know how to do that in Eclipse? Could anyone help me with this problem?
Thanks!
This is the fault message I get:
no security manager: RMI class loader disabled)
D-me

Do you have an idea of what the answer to our
question could be?I don't have much idea about the question myself. I was groping in the dark. :-)
Anyway, the project classpath settings and the external jars (or dependent projects) are a few things which could be experimented with. I'm afraid I couldn't be much help without having a look at what you are trying to do. :-(
Regards,
x

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Questions about Java Servlets and JSP

Hi,
I'm a confident Java Programmer (and really enjoy using this language) but am very new to Java servlets and Java Server Pages.
I have previously worked with Perl on my web projects (simple 'league' style voting pages). I read in my 'Core Java' book that I should no longer use perl or even cgi.
I need to know more about Java servlets and Java Server Pages so I can make the switch to a 'real' programming language.
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How applicable will the java knowlegdge I have already be?
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Is it likey my web host (and others) will support JSP?
Thank-you very much for helping a novice get started,
Regards,
Paul

Hi, Steve ...has to be frustrating! But do not despair.
Let's suppose the servlet it's named MyServlet on package org.servlets
WEB-INF should look:
WEB-INF
classes
org
servlets
MyServlet.class
web.xml
web.xml file should have this two declarations:
<web-app>
<servlet>
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</web-app>Now, once the container starts (Tomcat?), you should be able to see that servlet in:
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Question about Java RMI/JNDI/IIOP and Linux IPCHAINS.

IPChains only recognises, per se, three protocols
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as I grasp things. Can one mention IIOP
directly in an IPCHAINS firewall,
or is one forced to allow one particular IP,
by protocol and Port number?
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Zac1234 wrote:
IPChains only recognises, per se, three protocolsipchains? Blimey, I thought iptables took over from that ages ago.
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-UDIP
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as I grasp things. Can one mention IIOP
directly in an IPCHAINS firewall,doubt it; although you could set up a rule for it called IIOP
or is one forced to allow one particular IP,
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What is recommended for RMI
and JNDI here?Well according to [this page|http://en.wikipedia.org/wiki/General_Inter-ORB_Protocol]:
+"IIOP (Internet Inter-Orb Protocol) is the implementation of GIOP for TCP/IP."+
so I suspect you'll only have to worry about TCP packets. However, details of the protocol itself are something you should Google for if you want definitive answers. Alternatively, consult someone who's used to maintaining firewalls.
Winston
Edited by: YoungWinston on Apr 17, 2010 3:54 AM
PS: This is a Java forum

Simple question about java.rmi.registry.Registry

Hi,
where the object java.rmi.registry.Registry takes a URL to rmiregistry when perform bind method.
thanks.

Ok, will try to explain.
I have a server that I register in the RMI registry. Client from a remote machine get the server (as a remote object) and calls his method for the generation of another object on the parameters passed. The server creates this object and tries to register it in the RMI registry, and this raises an exception Registry.Registry.rebind disallowed; origin /11.0.10.31 is non-local host.
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Question about Java,XSLT and XML

I am new to Java and XML. I'm not quite clear the relationship between Java,XSLT and XML.
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3.summary some information, do some statistics from the x.xml and then form an Html output.
I don't konw which java classes and XSLT functions might be used.(Actually I don't know how/where to start).
Can anyone give me some clue ?
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You must provide XSLT stylesheeds to specify transformations (1), (2),
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The following code will transform x.xml into xx.xml according to task1.xsl. It gives you an idea which packages and classes to use, but it doesn't teach you proper Java programming technics :)
import java.io.File;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
public class Test
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http://www.w3.org/TR/xslt
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Question About Java Threads and Blocking

I'm helping someone rehost a tool from the PC to the Sun. We're using the Netbeans IDE and the Java programming language. I took a Java course several years ago, but need some help with something now. We're developing a front-end GUI using Swing to allow users to select different options to perform their tasks. I have a general question that will apply to all cases where we run an external process from the GUI. We have a "CommandProcessor" class that will call an external process using the "ProcessBuilder" class. I'm including the snippet of code below where this happens. We pass in a string which is the command we want to run. We also instantiate a class called "StreamGobbler" my coworker got off the Internet for redirecting I/O to a message window. I'm also including the "StreamGobbler" class below for reference. Here's the "CommandProcessor" class:
// Test ProcessBuilder
public class CommandProcessor {
public static void Run(String[] cmd) throws Exception {
System.out.println("inside CommandProcessor.Run function...");
Process p = new ProcessBuilder(cmd).start();
StreamGobbler s1 = new StreamGobbler("stdin", p.getInputStream());
StreamGobbler s2 = new StreamGobbler("stderr", p.getErrorStream());
s1.start();
s2.start();
//p.waitFor();
System.out.println("Process Returned");
Here's the "StreamGobbler" class:
import java.lang.*;
import java.io.*;
// Attempt to make the output of the process go to the message window
// as it is produced rather that waiting for the process to finish
public class StreamGobbler implements Runnable {
String name;
InputStream is;
Thread thread;
public StreamGobbler (String name, InputStream is){
this.name = name;
this.is = is;
public void start(){
thread = new Thread (this);
thread.start();
public void run(){
try{
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
while (true){
String s = br.readLine();
if (s == null) break;
System.out.println(s);
//messageWindow.writeToMessageArea("[" + name + "]" + s);
is.close();
catch(Exception ex){
System.out.println("Problem reading stream" + name + "...:" + ex);
ex.printStackTrace();
The "CommandProcessor" class calls two (2) instances of the "StreamGobbler" class, one for "stdin" and one for "stderr". My coworker discovered these are the 2 I/O descriptors that are needed for the external command we're running in this case. We're actually called the Concurrent Versions System (cvs) command from the GUI. Here's what we need it to do:
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while (s1.thread.isAlive() || s2.thread.isAlive())
// We really don't do anything here
I'm pretty sure we have to use threads for the output, but how do we instantly show all output and block any GUI actions?
Thank you in advance for your help!

You're talking about a GUI, but there's nothing in that code which is putting events into the GUI update thread. You also say that nothing happens to the GUI until the CommandProcessor.Run() method returns if you wait for the process.
This implies that you're calling CommandProcessor.Run() in an ActionListener. This will block the GUI thread until it completes.
I was going to explain what to do, but a quick Google informed me that there's a new class which is designed to help in these situations SwingWorker (or as a [separate library|https://swingworker.dev.java.net/] if you're not up-to-date yet).

Question about java objects and handles?

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Hope everyone understands that?

Thanks for the reply. Perhaps I should have mentioned that Object A does not have a method to return a referenece to Objects B and C. That's my problem. Was just wondering if there is some other way to obtain those refereneces. The reason I mentioned that I don't have the source code for Object A is because if I did, I could obviously write a method that would return me the references.
I'm not new to Java, nor am I an expert either. I'm pretty well up-to-speed on object oriented design though.
I'll provide more specifics on my problem just in case there is a solution to my problem. My code (class) is attempting to establish a connection with a mainframe computer through a web server portal using terminal emulation software provided by a 3rd party vendor. They provide an SDK that contains all the java classes necessary to establsih the connection. To establish the connection, you are required to build a java Properties object that contains all the parameters for the connection (host id, etc.) and pass that properties object to the constructor for the "Object A" class. That object actually establishes the session object using the parameters object you pass it. The session gets displayed in a standalone Applet ("Object A" class extends Applet). You can click on the applet, sign in to the system, and do whatever just fine using your keyboard. However, I wish to send commands to the session from my originating java code. The session object has a method to send commands to the session, but to do that, I need a handle to the session object that was created. I don't have that, and it appears they don't provide a method to get that. Looks like the vendor's intent was just for the user to interface with the session/Applet via the keyboard.

Basic question about Java, UNIX and OAS

Hi,
Can I create an appication that contains GUI components like testbox and textfields etc...and then load/import it into OAS?
Can I again, create such an GUI application and then load it UNIX platform and run it?
The reason I asked because I did create an application which has a frame, a panel and couples of buttons, text fields then ftp it to Unix Solaris, when I ran it with jre command, I got the following message:
java.lang.NoClassDefFoundError: Javax/Swing/UIManager at cms.CMSApp.main(compiled code) Exception in thread main
Please anyone help me to clarify this, I don;t if we can do such things but I did not do it the right way? or we cannot do it at all. Thanks for your help
Minh

I'm not sure I understand where OAS fits in here.. Is this an applet?
In any case, it sounds like the JDK version you are using is 1.1.x, and swingall.jar is not in the classpath.
If it's an applet, then you need to edit the HTML file and add in swingall.jar.
If it's an application, you need to edit the CLASSPATH environment variable and append the full path to swingall.jar
(note: in Java2 (JDK 1.2, 1.3) swingall.jar is no longer seperate, it is part of the runtime classes of java, so you don't have to add anything to the classpath)
Take Care,
Rob
null

Question about java reflection and "int" type

hi, using reflections I should invoke a Method (meth3) that have as parameter an INT type (not integer). I've tryed with this code:
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                    Object[] vettParam = {num};
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Works fine when I try it.
public class t
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Three questions about Java and Ftp

Hello, i've the following questions about Java and Ftp:
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FileWriter file = new FileWriter ("$HOME/.netrc");
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3- Are there any way to pass parameters to a .netrc file? If i get to do this i needn't change the permissions because i can't modify or create/destroy this file.
Thanks in advanced!!!
Kike

1- .netrc file is in $HOME directory but i can't
access to this directory from java code. The
following line producesan Exception (directory
doesn't exists)
FileWriter file = new FileWriter ("$HOME/.netrc");$HOME would have to be replaced by a shell, I don't
think you can use it as part of a legal path.
Instead, use System.getProperty("user.home");
Ok, thanks
2- .netrc file must have the followingpermissions:
-rw- --- --- but when i create the .netrc file the
following permissions are on default: -rw- r--r--,
how can i change this permissions? (In java code,i
can't use chmod.....)Yes, you can: Runtime.exec("chmod ...");
I need to use estrictly the .netrc with -rw- --- --- permissions
Yes, i can use Runtime.exec ("chmod ..."); but i don't like very much this solution because is a slow solution, am i right?
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file? If i get to do this i needn't change the
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Hello, I am working on a Java applet application and would like to choose a Java-based scalable server framework to use within my applcation. I have found a few like xsocket or QuickServer and have a question about other. And, also, which is the one You may advise? Yours sincerely, Slawek

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Server-
try{ nbc = pool.getNonBlockingConnection(inetAddress, 8090);
try{ nbc.write("|01|______|02|______|03|______|04|______|05|______|06|______|07|______|08|______|09|______|10|______"); }catch(Exception ee){}
}catch(java.io.IOException f){}
Client-
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Question about Java's HttpServer: Threading? Backlog?

Hello,
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>
Management of threads can be done external to this object by providing a Executor object. If none is provided a default implementation is used.
>
How can I get information about the default implementation in 1.6.0_13? Do you know the behavior? From my observations, the default implementation uses no Threads, meaning every request is handled in the same Thread, this results in handling the requests to the HttpServer one after another.
Is this right?
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>
When binding to an address and port number, the application can also specify an integer backlog parameter. This represents the maximum number of incoming TCP connections which the system will queue internally. [...]
>
When setting the backlog to -1, it uses the systems default backlog. How can I determine the systems default backlog? Can some lines of Java code reveal it (there is no getBeacklog() method)? Or is it up to the Operating System (we use Redhat Linux)?
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Regards,
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Question About Color's and Gradients

Hi all,
I have a question about color swatches and gradients.
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If you double click your gradient swatch (after adding it to the swatches)
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*** New *** Oracle APEX Essentials *** http://essentials.oracleapex.info/
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