Using system properties in config file.

HI,
Does anybody know how we can declare System properties in OC4J.
I am talking about using System.getProperty() in java classes.
I need to use this to capture my context realtive path in log4j properties file.

JavaSiva,
If you are using OC4J stand-alone, there are two ways (I know of) to define "System" properties:
* Use "-D" option of "java" command when launching OC4J
* Use "-p" switch recognized by "oc4j.jar" when launching OC4J
Note that I haven't tried OC4J stand-alone developer's preview 10.1.3.1.0 so I don't know if the above is still correct for that version, but it is for every version prior to that one.
Good Luck,
Avi.

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Reloading the Properties form config file

the doubt is on reloading the properties without restarting the server...
Earlier, I have a PropertyReader class which loads the properties from config file, here is the process I followed.
1)Calling the getInstance() from out side, which test the local instance variable exist or not, if it exists, then skip the creating new instance, else create the object by calling the self Constructor. Here is the method
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Now, I came to change the code to reload the properties with the following scenario.
1) in my getInstance method, I skip checking the instance and just calling new objct every time.
   public static PropertyReader getInstance(String fileName) throws IOException{
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       URL codebase = getClass().getProtectionDomain().getCodeSource().getLocation();
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So here I got couple of questions.
1) What if I create new instace everytime, will that cause any trouble in the memory point-of-view? i.e. load trouble?
2) What is the difference between 2 nd step in each scenario ? I can't get the exact difference.
Thanks,
Sumant K
Edited by: sumant14 on Jun 4, 2009 6:47 PM

sumant14 wrote:
So here I got couple of questions.
1) What if I create new instace everytime, will that cause any trouble in the memory point-of-view? i.e. load trouble?If you create just ONE object occasionally? Don't waste your time worrying about that. Unless you're doing this thousands of times each second.
2) What is the difference between 2 nd step in each scenario ? I can't get the exact difference.The first one just gets the properties file from the classpath. The second one is a bizarre hack which might do the same thing, or it might fail in certain circumstances.

How to access System properties in xml file

hi,
i want to read system properties in my xml file using ${} .
I tried it but did not find any way.But when i use log4j if i set some variable in
System properties that properties is read by the log4j.properties .
I am writing a simple program that read a xml properties file file
try {
            props   = new Properties();
            fis     = new FileInputStream(xmlFile);
            props.loadFromXML(fis);
}before reading this file i set some properties and accessing this properties from that xml .but i cant.
Thanks

sabre150 wrote:
fun_with_java wrote:
can you give some example?Not really - I would have to write the code for you and I'm not getting paid for writing your code.Thanks for your kindness.
I dont ask you to write the code.Need some help to start it .Actually i dont have knowledge that
whether xml file automatically read it or i have prase the system property manually. Now i got the way to
access system property in xml..
Ok thanks again..
Thanks & Regards

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Please take a look at these URLs:
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Please feel free to contact me at [email protected] as well as on Twitter and Facebook.
[My Writings on TechNet Wiki] [T-SQL Blog] [Curah!]
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Hi
There is a known issue about
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I'm looking to make a configuration file for an application running on a cRIO-9022. It will contain a small amount of configuration data (like numeric offsets, file paths, and IP addresses). I have 2 questions:
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--CLD--
LV 6.1, 8.6.1, 2011 SP1, 2012 SP1

JimMacD wrote:
Thanks for the info.
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uhm.... Yes!
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Edited by: Timothyja on Jan 15, 2008 7:00 PM

Hi Kiran,
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How to use env variables in config files?

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Could you please paste here the exact part of the config file? (Edit: Some time ago I encountered a similar issue and in my case removing the quotation marks solved the problem. Try doing the similar: either use quotes, be it " " or ' ', or remove them and see if this helps.)
Last edited by bohoomil (2011-10-01 23:34:24)

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ClassLoader in JAR file not loading config file properly

Hi all,
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Dan
Message was edited by:
Djaunl

try this:
import java.io.*;
import java.util.jar.*;
import java.util.zip.*;
public class ExtractFromJAR {
     public void extractFileFromJAR(String dest, String fileName) {
          try {
               String home = getClass().getProtectionDomain().getCodeSource().getLocation().getPath().replaceAll("%20",
               JarFile jar = new JarFile(home);
               ZipEntry entry = jar.getEntry(fileName);
               File efile = new File(dest, entry.getName());
               InputStream in = new BufferedInputStream(jar.getInputStream(entry));
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               byte[] buffer = new byte[2048];
               for (;;) {
                    int nBytes = in.read(buffer);
                    if (nBytes <= 0)
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                    out.write(buffer, 0, nBytes);
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          } catch (Exception e) {
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System.properties (what is the scope in memory)

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System properties are unique for each VM, they are therefore visible to all code running in the VM.
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item 1,
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dlm...

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"lilian zhu" <[email protected]> wrote:
>
Hi,
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<message-resources key="ldap" parameter="com/project/struts/ldap"/>
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