Disable or restrict System.out.println() statements on client side

Hi All,
This might be a stupid question, but i am still going
ahead and asking the question.
Is there a way to disable or restrict
System.out.println() statements in applet code from
executing on the client side by using settings in
proxy server or firewall or other security settings.
System.out.println() calls are executed on the client machine, and thus do not pass through any firewalls or proxies. If the applet is signed, you can redirect the System.out, by System.setOut(...).

Similar Messages

Where to see the System.out.println statements on soa server.

Hi,
I have generated some proxy classes in my jdeveloper. And I have deployed that project to the admin server on my soa_domain.
Now my java files have some System.out.println statements. I want to see those values.
Can anyone please let me know where I can see those statements on server.
What s the file name where i can see.
do i have to enable some debigging on the server. if yes then for what level i need to enable the log at what level.
Thanks
Anoop

Hi,
System.out.println is not really a good way to debug in weblogic... If you didn't configure where the stdout will go those messages can end up going nowhere...
I suggest you use one of these...
This will go to the soa*diagnostic logs... for example DOMAIN_HOME/servers/soa_server1/soa_server1-diagnostic.log...
import java.util.logging.Level;
import java.util.logging.Logger;
import oracle.fabric.logging.LogFormatter;
    private static final Logger soa_logger = Logger.getLogger("oracle.soa.Logger");
    static {
        LogFormatter.configFormatter(soa_logger);
        soa_logger.log(Level.INFO, message);
        soa_logger.log(Level.INFO, message, t);or
This will go to the server logs... for example DOMAIN_HOME/servers/soa_server1/soa_server1.log...
import weblogic.logging.NonCatalogLogger;
    private static NonCatalogLogger weblogic_logger = new NonCatalogLogger("SomeMeaningfulNameHere");
        weblogic_logger.notice(message);
        weblogic_logger.notice(message, t);Usually info and notice will go to the logs by default, you can try with higher levels (error,warning) as well or you can tweek the server debug level to use lower levels...
Cheers,
Vlad

Lost System.out.println statements.

Hi
I have few system.out.println in my jsp which i am using in my JSP provider channel. but when I look at the portal server's /var/opt/SUNWam/debug/desktop.debug file, none are there.. I looked at the web server's access and error logs too, but it is not there also.. can somebody tell me how do it get those ?? do we have any other mechanism to put debug logs ?

By default the binary which web server runs is uxwdog which eats up System.out.println output. If you want to see the System.out.println then you need to change the product binary from the start script of the portal server instance.
- Go to <portal-install-dir>/SUNWam/servers/https-<instance-name> and open the start script
- Change the PRODUCT_BIN=uxwdog to PRODUCT_BIN=ns-httpd , save the file
- Run the script ./start to start the portal server
Note : with ns-httpd ON the server will not leave that shell, and in the same window/shell you will be able to see all your System.out.println statements. To close the server you have to kill the server process with "kill -9 pids" command
Alternate way is to use api inside your application or jsp:
<%@page import="com.sun.portal.providers.jsp.JSPProvider, com.sun.portal.providers.*, com.sun.portal.providers.containers.*, com.sun.portal.providers.context.*" %>
<% JSPProvider p=(JSPProvider)pageContext.getAttribute("JSPProvider");
ProviderContext pc = p.getProviderContext(); %>
<%-- after that you can use these lines any where in your jsp --%>
<%
pc.debugError("your error msg");
pc.debugMessage("your msg");
pc.debugWarning("your warning msg");
%>
The perticular mgs will be shwon in /var/opt/SUNWam/debug/desktop.debug file as per your "debugLevel" parameter setting in /etc/opt/SUNWps/desktop/desktopconfig.properties file. By default the debugLevel is set to error so only pc.debugError("error msg") will be shown.
Sanjeev

System.out.println statements inside my session beans

I have some System.out.println statements inside my session beans to track some error conditions. I would like to know where this output will be printed. Is there any text file I should look for or start up any console to see the output.
I am running iPlanet SP3 test drive edition iPlanet Web Server 4.1 on WIndows NT machine.

Hi,
These statements will be printed on the kjs logs file. To view them, go to control panel-> services-> select the iPlanet Application server and click "start up" tab. Check " allow this sevice to interact with the desk top" in the service window that has been popped up. Restart the iPlanet Application server.
View the kjs window. All your System.out.println statements will be printed out there.
If you have any further queries please get back to the forum.
Thanks for visiting our web forum,
Rakesh.

Where to see the System.out.println() messages

I deploy my application in Oracle9ias . I have some System.out.println() statements in java class files.
When I run the application I need to know where I can see those println() statements.

The Member Feedback forum is for suggestions and feedback for OTN Developer Services. This forum is not monitored by Oracle support or product teams and so Oracle product and technology related questions will not be answered. We recommend that you post this thread to the Application Server-General forum. The URL is:
Oracle Application Server - General

Print System.out.println messages into logs of Weblogic Application Server

Hi,
I use Weblogic Application Server 10.3.6 on Windows 7. The Enterprise Application (J2EE) is deployed into the 'AdminServer' of Weblogic. For debugging purpose, I have added a few System.out.println statements.
I am unable to see the print messages on any of log files available in path 'user_projects > domains > base_domain > servers > AdminServer > logs'. However, I can see them on the 'command' prompt which was used to start the server. How can I get them into one of the log files? What am I missing?
I tried reading other threads on the forum and as per them 'System.out.println' gets logged onto *.out logs which I am unable to find. Only base_domain.log, AdminServer.log, access.log are available in the location.
More Specifics:
Configuration on WLS console 'Home > Servers > AdminServer > Logging'
Log file name: logs/AdminServer.log
Min. Severity to log: Notice (tried with Debug as well)
Advanced Options:
Logging Implementation: JDK
Redirect stdout logging enabled: False (tried both options)
Log file Severity Level: Notice (tried with Debug as well)
Standard Out Severity Level: Notice (tried with Debug as well)
Thanks

Paul,
I just found this on google:
'Generally, developers put a lot of System.out.println statements in their code to perform application debugging. Normally, all standard outputs and error outputs are routed to the console where the OC4J server is started. If you want to capture the standard output and error outputs to files for logging/debugging purposes, then you can use the -out and -err options while starting up the Oc4J server to specify which files to use.'.
http://www.onjava.com/pub/a/onjava/2002/01/16/oracle.html?page=2

System.out.println not showing up in the console

Hi,
I've some System.out.println statements in a static block in a Stateless
Session Bean. I could not see these outputs in the Weblogic console. I'm
using Weblogic 5.1 Any one faced this problem before? any help is
appreciated.
Thanks & Regards,
Nithi.

Take a look in the weblogic log files they might be redirecting std out.
"Ryan LeCompte" <[email protected]> wrote:
>
Hello Nithi,
I'm all out of ideas, unfortunately! However, check out the following
links for
some possible insight into the problem:
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=60&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3d3df18e%40newsgroups.bea.com&rnum=69
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=70&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3977417b%40newsgroups.bea.com&rnum=71
http://groups.google.com/groups?q=System.out.println+5.1+WebLogic&start=200&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3bc20346%241%40newsgroups.bea.com&rnum=209
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi Ryan,
Thanks for your reply and sorry for the long silence. I was on vocation.
Thre problem still remains.I'm very sure that the EJB
is deployed by WebLogic as I'm able to call some methods.
and I'm also calling EJB methods from Servlet. But my
System.out.println statments work fine in the Servlet and
not inside EJB (or anyother classes used by EJB).
Any one has faced similar problems? BTW am using WebLogic 5.1
Thanks in advance,
Regards,
Nithi.
"Ryan LeCompte" <[email protected]> wrote in message
news:[email protected]...
Hello Nithi,
I find it strange that your System.out.println statements are beingexecuted from
within your servlets, but not in your stateless session bean. Are
you
positive
that your EJB is being located and deployed by WebLogic? The statementsin
your
static { } block should be executed as soon as the WebLogic class
loader
finds
the class and loads it into the JVM. I would suggest examining theconsole
and
try to determine if your EJB is in fact being deployed. Are you invokingmethods
on the EJB inside of your servlets? Are you using any logging frameworkfrom within
the EJBs which would redirect output to a file?
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi Ryan,
Thanks for your reply. The setting in the weblogic.properties is
as
follows.
weblogic.system.enableConsole=true
So, that tells me that I should see all the System.out.printlns right?
(Pleasecorrect me if I'm wrong). I can see all the System.out.println
from
my
servletand not from the Session Bean (even if the System.out.println
is
outside
static block).
Please let me know your thoughts.
Thanks & Regards,
Nithi.
"Ryan LeCompte" <[email protected]> wrote in message
news:[email protected]...
Hello Nithi,
Are you sure that you don't have WebLogic configured to redirect
all
messages
to a file instead of the console? Are you able to see yourSystem.out.println
statements when placed within other methods of your stateless sessionbean? Please
be a bit more specific.
Thank you,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Nithi Rajan" <[email protected]> wrote:
Hi,
I've some System.out.println statements in a static block in a
Stateless
Session Bean. I could not see these outputs in the Weblogic console.
I'm
using Weblogic 5.1 Any one faced this problem before? any helpis
appreciated.
Thanks & Regards,
Nithi.

How do you change system.out.println colour?

Hi, I am developing some basic rmi client/server applications, I have an 2D array on a central server being read/written by remote clients. all the development is using system.out. statements at the moment (hopefully being replaced by GUI later) my question is when a client remote calls a read operation, and reads an array location, eg x3, y4 I want to print the location contents in a different colour to indicate the read, at the moment the displayArray() simply has nested for loops to cycle through the array and System.out.println statements to get it to the screen. I wonder is there a simple way to change the colour of system.out type statements? thanks for any help

I could be wrong, but I don't think that is possible. The System.out and other streams are just streams of characters, and doesn't contain any data about the characters. You could possibly get it to work if you knew which terminal the stream was going to and if the terminal had escape commands that could set colors. BBS browsers have that functionality, but I think that would be a hard path to follow.
If you are printing out a lot of data and need some color to aid it's readability, try printing directly to your graphic context:
Graphics g = getGraphics();
g.setColor(Color.white);
g.drawString("Hello",100,100);

System.out.println logged to ?

I am using Oracle 9ias 9.0.3 java edition.
I have deployed a war file successfully using EM.
i HAVE System.out.println statements in my servlets. I was unable to find any documents which tell me where these statements will be logged?
Any one help me.

Go to server properties page of OEM and edit OC4J options under Command Line Options. You will have to specify the OC4J option -out filename to capture the System.out messages. You can also specify the option -err filename to capture all the errors.
check out http://technet.oracle.com/tech/java/oc4j/htdocs/oc4j-logging-debugging-technote.html

Where does System.out.println go?

Hi Everyone: I know I've seen this topic before, but I'm still having some trouble. I would like to debug my EJBs, and so I've added some System.out.println statements to them. Where does that go? I've looked at the defaultTrace.trc files in the
C:\usr\sap\P48\JC00\j2ee\cluster\server0\log
folder, and haven't found any of the text that I think I am writing. I appreciate any guidance! Ian.

Hi lan,
I was facing the same question earlier, and now I think I have figured out one possible answer. Actually, where the System.out.println goes is up to the Server Admin to config. There is a default SYSTEM.OUT log controller ( under location controller side) pre-defined to cater for all System.out.println(). All the System.out.println() output is considered as INFO type log message. However, this default SYSTEM.OUT controller is not assigned with any real log destination, thus, we cannot find the output anywhere.
If you goes to the log configurator (using Visual Admin), you can locate this SYSTEM.OUT controller , and add in a default (Anonymous) destionation for it . (you need to toggle on the advance edit mode from the top menu , then you can add modify the destination settings of a Controller).
For Anonymous destionation, the println() output will sure go to the defaultTrace.trc (better view it using Log Viewer, instead of viewing it from the log file ).
Or , you can define a separate file (e.g. c:\temp\myStd.log ) as the log destination ..
Last but not the least, you need to set the ForceSingleTraceFile setting from 'YES' to 'NO' , then you can see your "myStd.log".
To change the ForceSingleTraceFile , go to Visual Admin, J2EE server --> Kernel --> LogManager.
Hope you find the above useful.

Is it possible to overide System.out.println()....

Hi all,
I have a program which uses System.out.println() a lot. As the whole program needed to be in GUI form, I have to abbandon the console window and print all my outputs to a special text pane which I have already created and tested.
My problem is, is there a way for me to keep my System.out.println() statements as they are and print the outputs to my text pane instead of printing it to the console?
Can I use some kind of overriding of System.out.println()? If so can anybody tell me how to do it?
Thank you all in advance

Hi again guys,
I managed to get the system.out working. Thanks again. But I was trying to do the same to system.in using a class that inherits from InputStream and failed, can you help me out again pliz.
following is a simplified version of the code. problem I have is that the input I get on readButton click(see the code) is always -1. The code doesn't wait for user input . How can I correct this. please help Thanx
public class Main() implements ActionListener
    JTextPane textPane;
    JButton readButton;
    public Main()
            this.initGUI();
            Console myConsole = new Console(this.textPane);
            System.setIn(new myInputStream(myConsole));
    private void initGUI()
           this.textPane = new JTextPane();
           this.readButton = new readButton();
           this.readButton.AddActionListener(this);
            //code to create the GUI and show the textPane
           //follows
     public void ActionPerformed(ActionEvent e)
             try
                         int keyCode = System.in.read();
                 }Catch(Exception e)
             System.out.println("Pressed Key Code is " + keyCode);
     public static void main(String[] args)
               new Main();
public class Console extends KeyListener
     JTextPane textPane;
     int pressedKey = -1;
     public console(JTextPane textPane)
             this.textPane = textPane;
             this.textPane.addKeyListener(this);
    public void keypressed(KeyEvent e)
            this.pressedKey = e.getKeyCode();
   public int read()
           return this.pressedKey;
public class myInputStream extends InputStream
            Console console;
            public myInputStream(Console console)
                   this.console = console;
            public int read()
                   return this.console.read();
}

Urgent: Redirecting System.out.println to more than one place

Hi All,
I want to divert all my System.out.println() statements to a Log file as well as on to the screen.
But only one of the 2 options actually works.
So if anyone can suggest me some ways I will appreciate very much.
My code looks something like this:-
if (m_filename != null) {
try {
FileOutputStream fos = new FileOutputStream(m_filename);
PrintStream ps = new PrintStream(fos);
System.setOut(ps);
System.setErr(ps);
//This code Added for Printing Onto Screen But it does not work
Stream ps1 = new PrintStream(System.out);
System.setOut(ps1);
System.setErr(ps1);
} catch (IOException ioe) {
System.out.println("Could not create log file " + m_filename + " because " + ioe);
As far as logging onto file is menat it works when i set it but printing onto screen does not.
How can i achive it
Thanks
Raj

Hi,
You are right but in my current scenario i cannot incorporate this log4j because my application is using some other framework and I am just trying to override this frameworks loggig behaviour so that it logs to both a log file as well as on to the screen.
Here is the code that this framework uses for logging and i am simply overriding it to do the reqd thing but its not working for me:-
* Resets the System's out and err OutputStreams to the Launcher's
* own ThreadedOutputStream, so that output from different threads
* can be tracked efficiently.
protected void setOutputStreams() {
if (scInfo.size() <= 1) {
// don't need Threaded handling with one thread
if (m_filename != null) {
try {
FileOutputStream fos = new FileOutputStream(m_filename);
PrintStream ps = new PrintStream(fos);
System.setOut(ps);
System.setErr(ps);
//Added for Printing Onto Screen
PrintStream ps1 = new PrintStream(System.out);
System.setOut(ps1);
System.setErr(ps1);
} catch (IOException ioe) {
Debug.fatalError("Launcher.setOutputStreams","Could not create log file " + m_filename + " because " + ioe);
else {
Debug.information("Launcher.setOutputStreams","Initializing ThreadedPrintStream");
if (m_filename == null) {
System.setOut(new ThreadedPrintStream(System.out));
System.setErr(new ThreadedPrintStream(System.err));
else {
PrintStream out = new ThreadedPrintStream(m_filename);
System.setOut(out);
System.setErr(out);
//Added for Printing Onto Screen
System.setOut(new ThreadedPrintStream(System.out));
System.setErr(new ThreadedPrintStream(System.err));
Debug.information("Launcher.setOutputStreams","ThreadedPrintStream initialized.");
Thanks
Raj

Java Beans System.out.println Log file

Helllo,
I have Forms 11.1.2 installed on linux. I developed a java bean and put some System.out.println() statements. The bean itself is working but where do i look for the debug statement logs that i am generating via System.out.println() statements.
Please let me know if you need more information, I will post asap.
thanks in advance,
Prasad.

Prabodh,
thanks, added the following line to the implementation class in java bean:
private final static Logger logger = Logger.getLogger(MyBean.class.getName());
and then in the init() method, i put
logger.info("Prasad .... in init);
Does this automatically goes into weblogic managed server WLS_FORMS (in my case) standard out?
Or do i need to do anything else, i know weblogic comes up with its own diagnostic logging and is famous for supressing other loggers.... just want to run this by you as well.
thanks,
Prasad,

Which toString() method does System.out.println() call?

Which toString() method does System.out.println() call? I know that if I did something like System.out.println( new myClass() ) that the toString being called would be that of the myClass class.
My initial thought about this was that System.out.println() is the equivalent of System.out.println( new Object() ) but I remember trying that in a test program and it gave me a myClass@some_hash_code type of message when adding the new Object() part within the System.out.println().
Could someone please tell me which toString the System.out.println() statement calls? Also, it would be great if an elaboration follows :).
Any input woudl be greatly appreciated!
Thanks in advance!

s3a wrote:
My initial thought about this was that System.out.println() is the equivalent of System.out.println( new Object() ) Huh?
In one method call you pass no parameters in the other method call you pass one parameter. How could you possibly think that they would do the same thing?
Could someone please tell me which toString the System.out.println() statement calls? Also, it would be great if an elaboration follows :).Yes. The toString of the class of the object which you pass to the method. If that class does not have a toString method it uses the toString method it inherits from the parent class. If the parent class does not have a toString method it uses the one inherited and so and so on all the way up to the Object class.

System.out.println and OAS

Hello All,
I have few System.out.println statements in my J2EE application which is running on OAS. I'm not sure where it is writing. I couldn't find anything in the server.log. Really appreciate any ideas.
Thanks

I know this is a couple of months old but it's a useful tip for anyone else having the same problem.
You can't see the System.out.println statements in any logs through the administration web pages of the OAS. You have to go through the filesystem, which is annoying and in my opinion a massive error by Oracle. But never mind.
The filepath is:
%ORACLE_HOME%/opmn/logs/default_group~***~default_group~1.log
replace *** with the name of your oc4j instance
HTH
Paul

Disable or restrict System.out.println() statements on client side

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