Accessing .properties file from java code

Hi,
I want my java code in a Tomcat Web Application to access values in a custom .properties file.How can i do it.
Any sample code / suggestions welcome.
Thanks
Vignesh.

ResourceBundle vResourceBundle = ResourceBundle.getBundle("database", Locale.ENGLISH);
        sDriverName = vResourceBundle.getString("database.DriverName");
        sDbURL = vResourceBundle.getString("database.DriverUrl");
        sDbUser = vResourceBundle.getString("database.UserName");
        sDbPasswd = vResourceBundle.getString("database.PassWord");Where "database" is the name of the property file. ie., database.properties.
the content of the database.properties file
# Properties to access dabase
database.UserName = scott
database.PassWord = tiger
database.DriverName = oracle.jdbc.driver.OracleDriver
database.DriverUrl = jdbc:oracle:thin:@nn.nn.nn.nn:port:orartgnull

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Unable to read Properties file from Java code

Hi,
The directory structure of my application is as follows:-
My App
++++++ src
++++++++com
++++++++++readProp.java
++++++++resource
++++++++++message.properties
I am trying to read the file as follows:-
<code>
public Static final string FilePath="resource.message.properties"
Here the code to read the file. I tried using the following two techniques but to no use... :(
File accountPropertiesFile = new File(FacesContext.getCurrentInstance()
.getExternalContext().getRequestContextPath()
+ FilePath);
properties.load(externalContext.getResourceAsStream(FilePath));
</code>
But none yeild any sucess while reading through the Bean class. please help...

Your source code isn't there at run time, at least it shouldn't be, so the directory structure you've shown is irrelevant.
If the file is in the corresponding position under WEB-INF/classes at runtime, the second technique should work, but you need to fix FilePath to agree with what it says under Class.getResource() and friends.

Generation of xml file from java code

hi,
I want to manipulate data in a xml file with java code.I have read data from xml file and also changed it. But i am unable to covert it again in xml file from java code. Can you please tell me how i can do this?

Let me know which parser are you using currently for reading xml files so that i assist you. For now, you can refer to STAX Parser API under this link
http://java.sun.com/webservices/docs/1.6/tutorial/doc/SJSXP3.html

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Thanks in advance

thanks for ur reply
but still i am getting the same error.
I am trying to run a .bat file of together tool, my code looks like below
import java.lang.Runtime;
import java.lang.Process;
import java.io.File;
class SysCall{
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I am getting the below exception
Before batch is called
java.lang.IllegalThreadStateException: process has not exited
at java.lang.Win32Process.exitValue(Native Method)
at SysCall.main(SysCall.java:17)
java.lang.IllegalThreadStateException: process has not exited

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Hi I was wondering how I can start a executable java file from java code?
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Hi Mkaveli,
Yes, it's possible. If you have a JAR executable, you've just to call the main method of its starter class. For a simple executable class, just call its main method.
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How to modify an existing xml file from java code.

Hi
I have worked on creating a new xml file from java code using xmlbeans.But if i try to modify an already existing file using java code I am unable to get errorfree xmlfile.
For example if xml file(studlist.xml) is as below:
<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
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<Student>
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</StudentList>
Now suppose i have set name to victor using student.setName,
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<?xml version="1.0" encoding="UTF-8"?>
<StudentList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="D:\kchaitanya\xmlprac1\abc\Studlist.xsd">
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<Student>
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</StudentList>
<Student>
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As observed this is not a valid xml file.But how can i modify without any errors?

I know it's an old post, but I found this while doing a google search for something else, and don't like to leave it un-aswered
Just in case anyone has a similar problem... In this case the new elements have been appended outside of the root element
What you need to do is first get the root element and then append the new children to that, there are several ways of getting the root element, which depend on what you want to do with the elements you get back here's a simple (incomplete) way.
// gets the root element of the specified file (code not shown)
Element rootElement= new SAXReader().read(file).getRootElement();Then just append the new elements as below (this is non-generic code and would need to be modified for your situation)
// write a new student element
Element student = document.createElement("Student"); // creates the new student
rootElement.appendChild(student); // ***appends it to the root element***
Element name = document.createElement("Name"); // creates the name element
name.appendChild(document.createTextNode("Fred")); // adds the name text to the name element
student.appendChild(name); // appends the name to the student
Element age= document.createElement("Age"); // creates the age element
age.appendChild(document.createTextNode("26")); // adds the age text to the age element
student.appendChild(age); // appends the name to the studentThen flush ya buffers or whatever and write the file
Edited by: Dream-Scourge on Apr 23, 2008 11:10 AM

Running a jar file from java code

Hi!
Im trying to run a jar file from my code.
I've tried Classloader, but that doesnt work because it doesnt find the images (also embedded in the 2nd jar file).
WHat I would like to do is actually RUN the 2nd jar file from the first jar file. There must be a way to do this right?
any ideas?

ok, I found some wonderful code (see below) that will try to start the jar. But it doesn't. What it does is produce the following error when my application runs...
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I think I will check the url again to make sure......
any ideas?
Uncaught error fetching image:
java.lang.NullPointerException
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the code....
/* From http://java.sun.com/docs/books/tutorial/index.html */
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.JarURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
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* Runs a jar application from any url. Usage is 'java JarRunner url [args..]'
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class JarClassLoader extends URLClassLoader {
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public JarClassLoader(URL url) {
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How to pass arguments to a batch file from java code

Hi
I have a batch file (marcxml.bat) which has the following excerpt :
@echo off
if x==%1x goto howto
java -cp C:\Downloads\Marcxml\marc4j.jar; C:\Downloads\Marcxml\marcxml.jar; %1 %2 %3
goto end
I'm calling this batch file from a java code with the following line of code:
Process p = Runtime.getRuntime().exec("cmd /c start C:/Downloads/Marcxml/marcxml.bat");
so ,that invokes the batch file.Till that point its ok.
since the batch file accpets arguments(%1 %2 %3) how do i pass those arguments to the batch file from my code ...???
%1 is a classname : for ex: gov.loc.marcxml.MARC21slim2MARC
%2 is the name of the input file for ex : C:/Downloads/Marcxml/source.xml
%3 is the name of the output file for ex: C:/Downloads/Marcxml/target.mrc
could someone help me...
if i include these parameters too along with the above line of code i.e
Process p = Runtime.getRuntime().exec("cmd /c start C:/Downloads/Marcxml/marcxml.bat gov.loc.marcxml.MARC21slim2MARC C:\\Downloads\\Marcxml\\source.xml C:\\Downloads\\Marcxml\\target.mrc") ;
I get the following error :
Exception in thread main java.lang.Noclassdef foundError: c:Downloads\marcxml\source/xml
could some one tell me if i'm doing the right way in passing the arguments to the batch file if not what is the right way??
Message was edited by:
justunme1

1 - create a java class (Executer.java) for example:
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Executer {
     public static void main(String[] args) {
          try {
               for (int i = 0; i < args.length; i++) {
                    System.out.println(args);
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                    mainArgs[i] = args[i + 1];
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               x.printStackTrace();
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               x.printStackTrace();
          } catch (IllegalAccessException x) {
               x.printStackTrace();
          } catch (InvocationTargetException x) {
               x.printStackTrace();
          } catch (Exception e) {
               e.printStackTrace();
2 - create a .bat file:
@echo off
java -cp C:\Downloads\Marcxml\marc4j.jar; C:\Downloads\Marcxml\marcxml.jar; Executer %TARGET_CLASS% %IN_FILE% %OUT_FILE%3 - use set command to pass variable:
Open MS-DOS, and type the following:
set TARGET_CLASS=MyTargetClass
set IN_FILE=in.txt
set OUT_FILE=out.txt
Then run your .bat file (in the same ms dos window)
Hope that Helps

How to copy a file from Java code

I have written a file through Java code in folder, say, "A". Now, I want a copy of that file exactly the same in some other folder "B". How, it can be done?

http://java.sun.com/docs/books/tutorial/essential/io/streams.html

Call .bat file from java code

I need to call an application that uses a .bat file to execute from a java program. Is that possible?
This is the .bat file:
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importcli.exe ciaf2735 C:\Importcli\files\CI2735*.txt
importcli.exe ciaf2735 C:\Importcli\files\SC2735*.txt
importcli.exe db1800 C:\Importcli\files\*.mdb

magaupe wrote:
I need to call an application that uses a .bat file to execute from a java program. Is that possible?
This is the .bat file:
importcli.exe ciaf2735 C:\Importcli\files\SAI2735*.txt
importcli.exe ciaf2735 C:\Importcli\files\CI2735*.txt
importcli.exe ciaf2735 C:\Importcli\files\SC2735*.txt
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Hmmm, I wonder what would happen if there were a web search engine and you could research like this:
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Proplem: Access HTMLB controls from java code

Hi,
I am new to iView development for EP6. So my problem should be easy to solve (for you ).
I created in the NW Dev Studio a JSP DynPage.
The following files were created or edited:
1.     JSP file (created)
2.     java file (created)
3.     portalapp.xml (edited)
In order to make the page running (proccessing) I changed the following things:
1.     JSP file Add taglib reference to HTMLB-class
2.     portalapp.xml Remove the native property so the JSP file will not be accessed directly.
Now I want to do the following:
On the JSP page I placed severeal HTMLB controls (textViews).
From the java code I try to access these controls in the doProcessBeforeOutput method and change/set values.
But I get all the time a null-Exception.
Code (JSP)
<%-- mcmsprovider.jsp --%>
<%@ taglib uri= "tagLib" prefix="hbj" %>
<hbj:content id="cntMcmsProvider" >
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</hbj:page>
</hbj:content>
Code (JAVA):
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I also tried to add raw text to the form but also null excpetion:
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public void doProcessBeforeOutput() throws PageException {
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Eike
Here is the example straight from the PDK documentation. This should help you a little
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import javax.media.Player;
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import javax.media.TimeBase;
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Best Regards

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What happened when you tried what you have there?

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