How to detect the path of Temp directory

I am writing a class library which allows users to manipulate a database in the web server java applications/applets. In my logic the Application/Applet communicate with a CGI script/Servlet in the server and that do all the database handling. My objective is to make the Client independant from the Database Drivers, and to some restrictions and possible security threats that can arrice when accessing the database directly.
99% of the work is done and now I am doing the fine tuning.
My Problem:
When the user downloading a blob object from the server database. each time the program read the blob it will get a new copy from the server. This is not good if the blob is large (few 100 megs) . So I am going to implement a cache system. but the problem is If I am caching in the memory it will not support large objects (Memory is a limited factor). So the preferance is use the Temperary files but I do not know how to detect the path to temperary folder.
And my 2nd questions is are the applets allowed to write and read in temperary folder.

The Java default temporary file path can be determined with
System.getProperty("java.io.tmpdir")This is typically the same value as the os environment variable

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I have the Java servlet to produce text file, and it produces to C:\hello.txt,
but I want to output in the current directory as the Java File:
i.e. C:\jakarta-tomcat-4.1.30\webapps\ExtendedGUI\WEB-INF\classes
try
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     out.println("HELLO");
     out.close();
catch(IOException e)
any ideas?? Thanks!!

The current directory is defined as the directory that you started your servlet container from. In your case, it was c:\. If you want it to fall into the same directory as your class files, I would start by finding out what TOMCAT_HOME or whatever container you're using is and adding to the directory until you get to your class directory. Make sense?
The easiest way is to read the output directory from a properties file as a resource or a hardcoded path.
HTH

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Hi Experts!
I have installed Oracle 10g 10.2.0 on a dedicated centos 4.4 Box and everything running fine. The problem is at the time of installation i have given the home directory path /u01/app/oracle/product/10.2.0/db_1 of user ORACLE and in the first step and in the second step i havent noticed the Inventory directory credential path. I just clicked on
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Check out /etc/oraInst.loc file.

How to know the path of file.

i am facing a problem,i have prepared a jar file of an application, which should have a path-file in it & that path-file contains loaction from where applicatioin starts, and creates some file there. but i dont know loaction when i prepared the jar file.how to solve this problem.

but it is not in my hand, My jar file will be used by a vendor to code a Servlet which will access the classes in the jar file. it cannot be solved by My jar file.
My Question was
I have to deliver a jar file which contains my classes. This jar file will be used by a vendor to code a Servlet which will access the classes in the jar file.
One of the classes in this jar file is required to simulate a file-system (we call it "Repository"). Essentially, it creates a certain directory and reads-writes files into it.
My problem is how to specify the path (i.e. directory location) of the "Repository". Following are the possibilities I could see :
1. Hardcode the path in the java code - This is not desirable since we do not know it while I am preparing my jar-file.
2. Create a properties file, put Repository.path=... as an entry and package it with the jar-file - The problem is that sine this properties file is packaged in the jar, it is read-only. Hence, it cannot be changed at runtime.
I want to know what are the general approaches to this?

How to get the path when i select a directory or a file in a JTree

How to get the path when i select a directory or a file in a JTree

import java.lang.*;
import java.io.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.HeadlessException;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Iterator;
* @author Frederic FOURGEOT
* @version 1.0
public class JTreeFolder extends JPanel {
protected DefaultMutableTreeNode racine;
JTree tree;
protected JScrollPane scrollpane;
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* Sous-classe FSNode
* @author Frederic FOURGEOT
* @version 1.0
private class FSNode extends DefaultMutableTreeNode {
File file; // contient le fichier li� au noeud
* Constructeur non visible
private FSNode() {
super();
* Constructeur par initialisation
* @param userObject Object
FSNode(Object userObject) {
super(userObject);
* Constructeur par initialisation
* @param userObject Object
* @param newFile File
FSNode(Object userObject, File newFile) {
super(userObject);
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public void setFile(File newFile) {
file = newFile;
* Renvoi le fichier lie au noeud
* @return File
public File getFile() {
return file;
public JTree getJTree(){
     return tree ;
* Constructeur
* @throws HeadlessException
public JTreeFolder() throws HeadlessException {
File[] drive;
tree = new JTree();
// cr�ation du noeud sup�rieur
racine = new DefaultMutableTreeNode("Poste de travail");
// cr�ation d'un noeud pour chaque lecteur
drive = File.listRoots();
for (int i = 0 ; i < drive.length ; i++) {
FSNode node = new FSNode(drive, drive[i]);
addFolder(drive[i], node); // on descend dans l'arborescence du lecteur jusqu'� MAX_LEVEL
racine.add(node);
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tree.addTreeExpansionListener(new TreeExpansionListener() {
public void treeExpanded(TreeExpansionEvent e) {
// lorsqu'un noeud est ouvert
// on descend dans l'arborescence du noeud jusqu'� MAX_LEVEL
TreePath path = e.getPath();
FSNode node = (FSNode)path.getLastPathComponent();
addFolder(node);
((DefaultTreeModel)tree.getModel()).reload(node); // on recharche uniquement le noeud
public void treeCollapsed(TreeExpansionEvent e) {
// lorsqu'un noeud est referm�
//RIEN
// alimentation du JTree
DefaultTreeModel model = new DefaultTreeModel(racine);
tree.setModel(model);
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tree.setBounds(0, 0, 240, 290);
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addFolder(driveOrDir, node, 0);
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* (avec niveau pour r�cursivit� et arr�t sur MAX_LEVEL)
* @param driveOrDir File
* @param node DefaultMutableTreeNode
* @param level int
private void addFolder(File driveOrDir, DefaultMutableTreeNode node, int level) {
File[] fileList;
fileList = driveOrDir.listFiles();
if (fileList != null) {
sortFiles(fileList); // on tri les elements
// on ne cherche pas plus loin que le niveau maximal d�finit
if (level > MAX_LEVEL - 1) {return;}
// pour chaque �l�ment
try {
for (int i = 0; i < fileList.length; i++) {
// en fonction du type d'�l�ment
if (fileList[i].isDirectory()) {
// si c'est un r�pertoire on cr�� un nouveau noeud
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node.add(dir);
// on recherche les �l�ments (r�cursivit�)
addFolder(fileList[i], dir, ++level);
if (fileList[i].isFile()) {
// si c'est un fichier on ajoute l'�l�ment au noeud
node.add(new FSNode(fileList[i].getName(), fileList[i]));
catch (NullPointerException e) {
// rien
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* @param node
public void addFolder(FSNode node) {
setCursor(new Cursor(3)); // WAIT_CURSOR est DEPRECATED
for (int i = 0 ; i < node.getChildCount() ; i++) {
addFolder(((FSNode)node.getChildAt(i)).getFile(), (FSNode)node.getChildAt(i));
setCursor(new Cursor(0)); // DEFAULT_CURSOR est DEPRECATED
* Tri une liste de fichier
* @param listFile
public void sortFiles(File[] listFile) {
triRapide(listFile, 0, listFile.length - 1);
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* @param listFile
* @param deb
* @param fin
* @return
private int partition(File[] listFile, int deb, int fin) {
int compt = deb;
File pivot = listFile[deb];
int i = deb - 1;
int j = fin + 1;
while (true) {
do {
j--;
} while (listFile[j].getName().compareToIgnoreCase(pivot.getName()) > 0);
do {
i++;
} while (listFile[i].getName().compareToIgnoreCase(pivot.getName()) < 0);
if (i < j) {
echanger(listFile, i, j);
} else {
return j;
* Tri rapide : quick sort
* @param listFile
* @param deb
* @param fin
private void triRapide(File[] listFile, int deb, int fin) {
if (deb < fin) {
int positionPivot = partition(listFile, deb, fin);
triRapide(listFile, deb, positionPivot);
triRapide(listFile, positionPivot + 1, fin);
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* @param posb
private void echanger(File[] listFile, int posa, int posb) {
File tmpFile = listFile[posa];
listFile[posa] = listFile[posb];
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How to save file in users temp directory in java

How to save file in users temp directory as "<Drive Name>:\Documents and Settings\<User Name\Local Settings\Temp".

Shouldn't the System property "user.home" reference to that directory on windows? So if you call System.getProperty("user.home");, I think it should return that path at least up to <User Name>. I never really tried it on Windows though.

How to change the path of the Transport

HI all!
I had the system of portal dev,qas,prd,I want to made the export folder of the dev point to the import folder of the qas.But how to change the path of the transport ?I change the file of the D:\usr\sap\dev\SYS\global\pcd\pcdStartup.properties,But it not useful.I think my type is not correct.Plz tell me the key.thanks very much!!!
D:\usr\sap\dev\SYS\global\pcd\pcdStartup.properties,I changed:
Transport Application
Root directory for exporting transport packages
#Pcd.TransportApplication.ExportRootDir=
qas\Import
Root directory for importing transport packages
#Pcd.TransportApplication.ImportRootDir=${Pcd.Share}/Import
Directory for temporary transport files
#Pcd.TransportApplication.TempDir =${Pcd.Temp}/transport
Edited by: joecui on Nov 12, 2008 8:15 AM
Edited by: joecui on Nov 12, 2008 8:16 AM

Did you try to remove the "#" character before every line you changed?
Save the file...
Reload/Refresh it in the Portal...
Try if that helps you.
Cheers,
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How to set the PATH in Terminal?

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1. Bash first looks to ".bash_profile" in the home directory for PATH settings.
2. If none, Bash then looks to ".bash_login" for PATH settings.
3. If none, Bash then looks to ".profile".
4. If none, Bash then looks to a system file in "/etc/profile" for default PATH settings.
5. For a new shell after login, Bash looks for a ".bashrc" file.
I cannot find any of the above files (I have Finder set to show hidden files already). Somehow, following some instructions from the internet without really knowing what I was doing over the past week I have set my PATH as follows:
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/*****/src:/usr/X11/bin
but I cannot find the file that is setting this PATH. I have tried creating a new ".bash_profile" shell file and putting it in various places such as "/bin" and "/usr/bin" but the file is not being read.
* As a temporary workaround I tried using the command "source .bash_profile" upon login to set the PATH using the .bash_profile file that I created, but it does not work.
* I am able to temporarily alter the path using the command "PATH=/usr/local/bin:$PATH" but this only lasts for an active shell; when I close out and reopen a new shell, it reverts to the default.
So my questions are:
Is it correct that there is a "/etc/profile" somewhere that is setting the default PATH? If so where is it? Should I alter it, or create a new ".bash_profile" somewhere to set the PATH? If not, where is my PATH being set? If I should create a new ".bash_profile", what exactly should go in it?
Thanks in advance for any assistance.

... I created a new ".bash_profile" file directly under my home directory and it worked like a charm. Below is the content of the file:
"PATH=/usr/local/bin:/bin/:/sbin/:/usr/bin/:/usr/sbin/:/Users/******/Ruby:/Users/*******/src:/Users/******/Java Programs/"
What are the "..."'s? Is that just you, or is the contents of the file actually inside of double quotes?
is there an 'export PATH' also in the file? As in
PATH=/usr/local/bin:/bin/:/sbin/:/usr/bin/:/usr/sbin/:/Users/******/Ruby:/Users/*******/src:/Users/******/Java Programs/
export PATH
And did you either restart your Terminal session so your .bash_profile was read, or issue a 'source .bash_profile' command to execute the .bash_profile after your change?
The only remaining problem is that from the home directory, I'm unable to directly run programs in the above-designated subdirectories (without first navigating to the subdirectory containing the file. Is there something wrong with the syntax or order of the directories I put in the path?
For example: there is a file called "newprogram.rb" in the "Ruby" directory listed above. I should be able to execute it from the home directory using "ruby newprogram.rb" but it does not work. The same command works fine from within the "Ruby" directory.
Does the 'ruby' command search PATH to find its scripts?
Have you read the "man ruby" man page to see if it talks about PATH?
A common Unix feature is that programs and scripts with the executable bit set, and are located in a PATH directory, will be run if you just type their names.
For example, if the first line of newprogram.rb script starts with
#!/usr/bin/ruby
and if the script is executable
chmod +x newprogram.rb
And if it is in a directory in PATH, then just typing
newprogram.rb
should run your perl script using /usr/bin/ruby. If you want to use a different version of Ruby, then change the #! line so it point to your version of Ruby. Or if your version of Ruby is found earlier in PATH then the /usr/bin/ruby, you can use
#!/usr/bin/env ruby
as your script's first line which will search PATH for 'ruby' and use the first one it finds.
Message was edited by: BobHarris

How to determine the mount point for directory /tmp ?

Folks,
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http://appsdbaworkshop.blogspot.com/2011/10/11gr2-rac-on-linux-56-using-vmware.html
I am installing Grid infrastructure. I am on step 7 of 10 (verify Grid installation enviroment) and get this error:
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Expected value: n/a
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Filesystem 1k-blocks used Available Use% Mounted on
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Thanks.

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I suggest you try to locate the cluster verification tool, which should be in the bin directory of your grid installation. Alternatively you might want to check the RAC, ASM & Clusterware Installation forum: RAC, ASM & Clusterware Installation

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Hi,
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Check this:
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Greetings,
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How 2 get the path of a file Using jsp

how 2 get the path of a file Using jsp
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