Changing Folder & File Permission via Java Program

Please help me with some Java Code on how to change Folder & File Permission on CM

Hi Christopher,
Perhaps this
Repository Service auto change resource permissions
thread might help you.
Regards,
Patrick.

Similar Messages

Changing Folder/File Permission Parameter

Good morning.
I am trying to change some setting in a VIDEO_TS folder, but all of the files are "Read Only". Even When I go to "Get Info" there doesn't seem to be a way to change permission.
What am I missing? How can I change the permission parameter so that I can edit the file?
Thanks in advance.
Brian

Hi Martin.
Thank you for the quick response.
I videotape a project with my cameras set to 16:9. I have edited them, changed them to a quicktime movie and burned an image using iDVD.
Of course it won't play in 16:9, so I was using a program called myDVDEdit to change the parameters of the files in the VIDEO_TS folder to make them display in 16:9. I posted a question/thread about it yesterday, but nobody responded.
When I go into the VIDEO_TS folder, the files are all "Read Only", so I can't edit them. I went to "Get Info" to change the permissions and everything is grayed out so that I can't change anything.
Can you suggest a better method for any of this?
Brian

How to use FilePermission class to change the file permission in Linux

Hi all,
I'm running in a issue related to changing the file permission under Linux environment. I'm using Suse 10.0 Linux and run jdk 1.5 java runtime.
I want to create a file during execution time and change the permission of the same. I use File.createNewFile() API to create file. By default it does not have all the 3 permission (read,write,execute) for all the user ( user,owner,group). Through program I have to change the file permission ( equal to execute ,chmod 777 filename).I donot want to use runtime.exec() with chmod as the argument , since it creates a process to change the permission which may impact the performance. I want to try FilePermission class , by giving filename and permission as the argument. But it is not changing the permission . Could any one faced this problem ?
If any body guides me, how to change the permission of the file under Linux using FilePermission class , it would be helpful.
Thanks,
Sankar

How do I set the Umask prior to starting the program
? Could pls explain in steps.I don't think umask can help you. The mode mask prevents permission bits from being set when a file is created, but does not force any bits to be set. So if execute permission is not set explicitly when a file is created, umask will do nothing about it.
But if you want more information about umask, see the man page for your shell script (sh, csh, etc.) or "man 2 umask".

HT1941 I have inadvertently changed a file permission setting. When opening Aperture I get the following; Aperture cannot access this library. To use this library make sure it's file permissions are set correctly. I am an old dude new to Mac OS. What up?

I have inadvertently changed a file permission setting. When opening Aperture I get the following; "Aperture cannot access this library. To use this library make sure it's file permissions are set correctly". I am an old dude new to Mac OS. Looked in settings but have no idea how to allow file sharing to myself. I have been using Aperture actively for 6 weeks. I'm the only one using this Mac. What up?

Back up all data now.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. If none of this is meaningful to you, you don't need to worry about it.
Step 1
If you have more than one user account, and the one in question is not an administrator account, then temporarily promote it to administrator status in the Users & Groups preference pane. You can demote it back to standard status when this step has been completed.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Drag or copy — do not type — the following line into the Terminal window, then press return:
sudo chflags -R nouchg,nouappnd ~ $TMPDIR.. ; sudo chown -R $UID:20 ~ $_ ; chmod -R -N ~ $_ 2> /dev/null
Be sure to select the whole line by triple-clicking anywhere in it. You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning. If you don’t have a login password, you’ll need to set one before you can run the command.
The command will take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear, then quit Terminal.
Step 2
Boot into Recovery by holding down the key combination command-R at startup. Release the keys when you see a gray screen with a spinning dial.
When the OS X Utilities screen appears, select Utilities ▹ Terminal from the menu bar. A text window opens.
In the Terminal window, type this:
resetpassword
That's one word with no spaces. Then press return. A Reset Password window opens. You’re not going to reset a password.
Select your boot volume ("Macintosh HD," unless you gave it a different name) if not already selected.
Select your username from the menu labeled Select the user account if not already selected.
Under Reset Home Directory Permissions and ACLs, click the Reset button.
Select  ▹ Restart from the menu bar.

How to read an XML file into a java program?

hi,
i want to load the following very simple xml file in my java program.
<root>
<weblogic>
<url value="t3://192.168.1.160:7001" />
<context value="weblogic.jndi.WLInitialContextFactory" />
</weblogic>
</root>
I am getting the error: " Line=1: cvc-elt.1: Cannot find the declaration of element 'root'."
What might be the problem can anyone help me out.
My java class code is:
public class BIXMLReader {
/** All output will use this encoding */
static final String outputEncoding = "UTF-8";
// Parses an XML file and returns a DOM document.
// If validating is true, the contents is validated against the DTD
// specified in the file.
public static Document parseXmlFile(String filename, boolean validating) {
try {
// Create a builder factory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
factory.setIgnoringComments(false);
factory.setIgnoringElementContentWhitespace(false);
factory.setCoalescing(false);
factory.setValidating(validating);
// Create the builder and parse the file
System.out.println("filename = " + filename);
DocumentBuilder db = factory.newDocumentBuilder();
// Set an ErrorHandler before parsing
OutputStreamWriter errorWriter = new OutputStreamWriter(System.err, outputEncoding);
db.setErrorHandler(new MyErrorHandler(new PrintWriter(errorWriter, true)));
Document doc = db.parse(new File(filename));
System.out.println(doc.toString());
return doc;
} catch (SAXException e) {
System.out.println("A parsing error occurred; the xml input is not valid. " + e.getMessage());
} catch (ParserConfigurationException e) {
System.out.println("Parser configuration exception has occured");
} catch (IOException e) {
System.out.println("IO Exception has occured " + e.getMessage());
return null;
// Error handler to report errors and warnings
private static class MyErrorHandler implements ErrorHandler {
/** Error handler output goes here */
private PrintWriter out;
MyErrorHandler(PrintWriter out) {
this.out = out;
* Returns a string describing parse exception details
private String getParseExceptionInfo(SAXParseException spe) {
String systemId = spe.getSystemId();
if (systemId == null) {
systemId = "null";
String info = "URI=" + systemId +
" Line=" + spe.getLineNumber() +
": " + spe.getMessage();
return info;
// The following methods are standard SAX ErrorHandler methods.
// See SAX documentation for more info.
public void warning(SAXParseException spe) throws SAXException {
out.println("Warning: " + getParseExceptionInfo(spe));
public void error(SAXParseException spe) throws SAXException {
String message = "Error: " + getParseExceptionInfo(spe);
throw new SAXException(message);
public void fatalError(SAXParseException spe) throws SAXException {
String message = "Fatal Error: " + getParseExceptionInfo(spe);
throw new SAXException(message);
}

ok thanks, i can get the elements, but why did it not validate it?
I want to read the child nodes of "weblogic" not by their name but by their index. Because i dont want to confine the reader so i want to read all the child nodes of weblogic (looping over them). i m doing the following but its not returning me the correct result and giving me the wrong count of child nodes.
Element elementNode = (Element)doc.getElementsByTagName("weblogic").item(0);
NodeList nodeList = elementNode.getChildNodes();
int length = nodeList.getLength();
System.out.println("length = "+ length); // the length its giving is 5 but i shuld get only 2
for(int i=0; i < length; i++) {
Element elmChild = (Element) nodeList.item(i);
System.out.println(elmChild.getAttribute("value"));
what might be the problem?

How to run an exe file in a java program

Hi,
Can somebody tell me how to run an exe file in a java program.
Thank you!

Yes, java.lang.Runtime.exec().
Read this carefully before you do:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
Don't write a line of code before you're reviewed and understood the article completely. - MOD

How can I execute a batch file from my java program

Hi,
Can someone help me or direct me to a link,
How can I execute a DOS batch file from my java program?
Thanks

You will need to grab a handle to the process's
outputstream so u can see its output.The OP didn't mention any output from any batch file;
nor any input for that
matter,so lets not complicate matters here for now
ok?Actually I think this is essential to see whether it works or not. It's either that or do some manual check to see whether it ran, which is not exactly elegant, and in some cases this may not be easier than simply writing the output stream code, or in fact it may be impossible to check manually.
I'm sure it wasn't intentional that your post appeared to be bristling with attitude.

How to invoke the .bat(batch file ) from the java program

i want to run some commands when i run one java program.
I wrote those dos commands on the batch file and i want to include the bat file in the java program so that i can execute the bat file when i run the java program.
tell me the way that i can run my bat file inside the java program.

i tried this :
a .bat file named test.bat, with this code : copy test.bat test2.bat
a java class, Test.class, in the same directory
public class Test {
     public static void main(String[] args) {
          try {
               Runtime rt = Runtime.getRuntime();
               Process proc = rt.exec("cmd /c test.bat");
               proc.waitFor();
               int exitVal = proc.exitValue();
               System.out.println("Process exitValue: " + exitVal);
          catch (Throwable t) {
               t.printStackTrace();
}

How to compile and run a .java file from another java program

hello,
can any one tell me how to compile and run a *.java* file from another java program which is not in same directory?

Well a smarter way of implementing this is by using a solution provided by Java Itself.
If you are using J2SE 6.0+ there is an in built solution provided along with JDK itself and inorder to go ahead with solution the below are set of API which you;d be using it for compiling Java Programs (Files)
http://java.sun.com/javase/6/docs/api/javax/tools/package-summary.html
How do i do that ??
Check out the below articles which would help you of how to do that
http://www.ibm.com/developerworks/java/library/j-jcomp/index.html
http://www.javabeat.net/javabeat/java6/articles/java_6_0_compiler_api_1.php
http://books.google.com/books?id=WVbpv8SQpkEC&pg=PA155&lpg=PA155&dq=%22javax+tools%22+compiling+java+file&source=web&ots=XOt0siYe-f&sig=HH27ovuwvJgklIf8omTykUmy-eM
Now once we are done with compilation.In order to run a Specific class all you ought to do is create an object and its specific methods of a specified class included in the CLASSPATH which you can manage it easily by usage little bit reflections.
Hope that might help :)
REGARDS,
RaHuL

Creating a file from a Java Program

Hi all,
if I want to store a byte array to a file somewhere in the middle of my program... is it possible to create the file inside my Java program, i.e. the file will be created during the execution of my program, and then write this byte array into it? The name of the file to be created is predefined by me, and not thru user input.
If so, does anyone have a sample source code to show me? or redirect me to somewhere ?
Thanks in advance!
Joe

You can take a look at the File, FileOutputStream, FileInputStream classes. A simple one will be like:
byte[] ar = {12,13,14};
File file = new File("wee.dat");
if (!file.exists())
try
FileOutputStream fos = new FileOutputStream(file);
fos.write(ar);
}catch (IOException io){}
else
...

Need to change the directory using the java program

hi,
can anyone give me the code to change the directory in the java program by using the system command.
as in C where we use the system call system("cd");
the same way how to do that in java. please help me with that!!!

Please search the forums for "runtime.exec", there are dozens of examples posted.
Although this may not do you any good, since changing the os's directory is not likely to change anything you're using in Java. What are you trying to do?

Change the file permission of listener log (log.xml) 11gR2

Hi
Is there a way to change the file permission of the listerner log (log.xml)? everytime the a new log.xml is created the file permission is 640.. i want it to be 644. Is there ay configurations that needs to be done?
DB version is 11gR2.
Thanks

peacock wrote:
Hi
Is there a way to change the file permission of the listerner log (log.xml)? everytime the a new log.xml is created the file permission is 640.. i want it to be 644. Is there ay configurations that needs to be done?
DB version is 11gR2.
Thanks
       umask [-p] [-S] [mode]
              The user file-creation mask is set to mode. If mode begins with a digit, it is interpreted as an octal
              number; otherwise it is interpreted as a symbolic mode mask similar to that accepted by chmod(1).   If
              mode is omitted, the current value of the mask is printed. The -S option causes the mask to be printed
              in symbolic form; the default output is an octal number. If the -p option is supplied, and mode is omit-
              ted, the output is in a form that may be reused as input. The return status is 0 if the mode was suc-
              cessfully changed or if no mode argument was supplied, and false otherwise.

Changing oracle file permission with ftp / sql

Hi, i have a question:
I've configure webdav to browse my /i folder.
I can use as well filezilla, connecting with hostname / uname: system / pass / myoraclesystem pass.
Is there a way to change file permission attributes with ftp?
Thank you

Hi,
Check out ORDSYS.ORDImage type from Oracle Intermedia, and especially its "process" method.
It possesses various commands to change image properties.
HTH.

Nfs mount point does not allow file creations via java.io.File

Folks,
I have mounted an nfs drive to iFS on a Solaris server:
mount -F nfs nfs://server:port/ifsfolder /unixfolder
I can mkdir and touch files no problem. They appear in iFS as I'd expect. However if I write to the nfs mount via a JVM using java.io.File encounter the following problems:
Only directories are created ? unless I include the user that started the JVM in the oinstall unix group with the oracle user because it's the oracle user that writes to iFS not the user that creating the files!
I'm trying to create several files in a single directory via java.io.File BUT only the first file is created. I've tried putting waits in the code to see if it a timing issue but this doesn't appear to be. Writing via java.io.File to either a native directory of a native nfs mountpoint works OK. ie. Junit test against native file system works but not against an iFS mount point. Curiously the same unit tests running on PC with a windows driving mapping to iFS work OK !! so why not via a unix NFS mapping ?
many thanks in advance.
C

Hi Diep,
have done as requested via Oracle TAR #3308936.995. As it happens the problem is resolved. The resolution has been not to create the file via java.io.File.createNewFile(); before adding content via an outputStream. if the File creation is left until the content is added as shown below the problem is resolved.
Another quick question is link creation via 'ln -fs' and 'ln -f' supported against and nfs mount point to iFS ? (at Operating System level, rather than adding a folder path relationship via the Java API).
many thanks in advance.
public void createFile(String p_absolutePath, InputStream p_inputStream) throws Exception
File file = null;
file = new File(p_absolutePath);
// Oracle TAR Number: 3308936.995
// Uncomment line below to cause failure java.io.IOException: Operation not supported on transport endpoint
// at java.io.UnixFileSystem.createFileExclusively(Native Method)
// at java.io.File.createNewFile(File.java:828)
// at com.unisys.ors.filesystemdata.OracleTARTest.createFile(OracleTARTest.java:43)
// at com.unisys.ors.filesystemdata.OracleTARTest.main(OracleTARTest.java:79)
//file.createNewFile();
FileOutputStream fos = new FileOutputStream(file);
byte[] buffer = new byte[1024];
int noOfBytesRead = 0;
while ((noOfBytesRead = p_inputStream.read(buffer, 0, buffer.length)) != -1)
fos.write(buffer, 0, noOfBytesRead);
p_inputStream.close();
fos.flush();
fos.close();
}

Making batch files to execute java programs in windows

In my comp sci class, i found a folder with a batch file, an application file, and all class files necessary to run the program.
how do i take my java program and make a batch file to run it (in dos) like that program in my comp sci class?

Okay, here are your steps for running a java program from a batch file:
1) Open Notepad
2) type the following:
set JAVA_HOME=C:\j2sdk1.4.0_03 // specify the path where your jdk is
set path=%JAVA_HOME%\bin;.
javac {-classpath .;one.jar;two.jar} YourProgramName.java
java {-classpath .;one.jar;two.jar} YourProgramName
The stuffs inside {} is not necessary if your program doesnt use any .jar files.
3) Save the notepad as mybatch.bat in the directory where your Java program is located.
4) In the DOS prompt, go to the directory where you have .java and .bat files
(use 'cd' command)
5) Now, type mybatch.bat and press ENTER.
Thatz it. Your program runs like a charm now!!!
(provided the compiler is pleased with ur code :)
-- layman's pal

Changing Folder & File Permission via Java Program

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