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sshj : permissions problems when downloading file

I am trying to download some files vis sftp using a java application which uses the sshj library. I am using this tutorial
My code is as follows:
try {
sftpClient = client.newSFTPClient();
remoteFileList = sftpClient.ls("gtdt/xml");
logger.debug("trying to explicitly donwload file");
sftpClient.get("remotepath/xml/somefile.xml", new FileSystemFile(localDownloadDir));
} catch (IOException e) {
logger.error("Error getting list of remote files on sftp server", e);
fail("error getting list or remote ftp files");
}
Later I loop over the files that were returned:
assertTrue(remoteFileList.size() > 0);
for (RemoteResourceInfo info : remoteFileList) {
logger.info(info.toString());
}
but when I try to download any files (have tried one and many) like so
// get first file in list and download
RemoteResourceInfo info = remoteFileList.get(0);
try {
String localCopyPath = localDownloadDir.getAbsolutePath() + "/" + info.getName();
FileSystemFile localCopyFile = new FileSystemFile(localDownloadDir.getAbsolutePath() + "/" + info.getName());
logger.debug("attempting to copy remote file " + info.getPath() + " to : " + localCopyPath);
sftpClient.get("remotepath/xml/somefile.xml", localCopyFile);
} catch (IOException e) {
logger.error("unable to copy file to local dir ", e);
fail("unable to copy " + info.getName() + " to local dir " + localDownloadDir.getAbsolutePath());
}
I get an error like this:
[main] WARN net.schmizz.sshj.xfer.FileSystemFile - Could not set permissions for c:\mypath\somefile.xml to 1a0
any idea how to fix this? The actual code that is being executed there starts at line 142 here. It wasn't clear to me if this is and issue on my local machine or something I need to configure in sshj.
thanks!

check if a folder exist in datalake using java

I want to check if a folder exist in the datalake. If exist create a file in it and If folder doesn't exist create folder and then create a file inside the folder
File directory = new File("/Raw/TEST_1/test");
System.out.println("check if directory exist");
if (directory.exists() == false) {
client.createDirectory("/Raw/TEST_1/test");
System.out.println("Directory created.");
OutputStream stream = client.createFile("/Raw/TEST_1/test/" + FuFileName, IfExists.OVERWRITE);
} else {
System.out.println("Directory exist.");
OutputStream stream = client.createFile("/Raw/TEST_1/test" + FuFileName, IfExists.OVERWRITE);
}
} catch (ADLException ex) {
printExceptionDetails(ex);
} catch (Exception ex) {
System.out.format(" Exception: %s%n Message: %s%n", ex.getClass().getName(), ex.getMessage());
}
every time directory.exists() gives me output false even if that folder exist if not giving directory.exists()output as true and not executing else statements

If you are using Java 7 or higher, then it is recommended to use java.nio in order to access the file system.
This very simple example can tell you if a given path is existing and if it is a directory or something else:
import java.nio.file.Path;
import java.nio.file.Paths;
...
public static void main(String[] args) {
Path dirPath = Paths.get("/Raw/TEST_1/test");
if (Files.exists(dirPath)) {
System.out.println(dirPath.toAbsolutePath().toString()
+ " exists on the file system");
if (Files.isDirectory(dirPath)) {
System.out.println(dirPath.toAbsolutePath().toString()
+ " is a directory");
} else {
System.err.println(dirPath.toAbsolutePath().toString()
+ " is not a directory");
}
} else {
System.err.println(dirPath.toAbsolutePath().toString()
+ " does not exist on the file system");
}
}

could not find text file, java file I/O error

not sure why this won't read my txt file saved in the same directory. it compiled just fine but then when i enter java BlindfoldsAside into the cmd ln, it says it cannot find or load my main class BlindfoldsAside. The case is all correct as far as I can see and everything is in the right file path, so I'm not sure where i went wrong!
package blindfoldsaside;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
public class BlindfoldsAside {
public static void main (String[] args) {
Scanner scannerIn = null;
FileInputStream in = null;
BufferedReader inputStream = null;
int fileChar; //character's int equivalent
String fileLine;
try {
// FileInputStream calls the txt file
in = new FileInputStream("blindfoldsaside.txt");
System.out.println("These lyrics tell the story of a woman, named Kezia, who is" +
" \nbeing put to death after being forced into prostitution. This song is from the prison" +
" \nguard's (who is also the executioner) point of view. I hope you enjoy.");
// this reads the file one char at a time
while ((fileChar = in.read()) != -1) {
System.out.print((char) fileChar);
}// end while
System.out.println(""); //separates the file output
System.out.println("");
System.out.println("This song was written by Arif Mirabdolbaghi (bassist) and performed by " +
" Protest the Hero. This song appears on the band's first full length album, Kezia, " +
" released in their native country (Canada) on August 30th, 2005 and to the U.S. on " +
" April 4th, 2006. This is the 6th track on the album.");
} catch (IOException io) {
System.out.println("File IO exception" + io.getMessage());
} finally {
try {
if (in != null) {
in.close();
}// end if
if (inputStream != null) {
inputStream.close();
}// end if
} catch (IOException io) {
System.out.println("There was a problem closing your files" + io.getMessage());
}// end catch
}// end finally
}// end main
}// end class

Try moving the txt file into the project root folder. that should work with no issues. Lest me know if something changed or if it worked fine.

filewriter not writing to file even though no error

I have some code that I have been using for a long time to write to a .txt file in the csv format, but for some reason it will no longer actually produce a new file. The file writing function is executing normally and flushing and closing without any error, but then no file is created. Below is a simplified example that is still not working.
`
import java.io.FileWriter;
public class test {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
String filename = "SO example";
FileWriter writer=null;
try{
writer = new FileWriter(filename);
}
catch(Exception e){
System.out.println("exception: " + e.getMessage());
}
try{
writer.append("some text\n");
System.out.println("after append");
} catch (Exception e){
System.out.println("exception: " + e.getMessage());
}
try{
writer.flush();
writer.close();
System.out.println("finished writing file "+ filename);
}catch (Exception e){
System.out.println("exception 3: "+e.getMessage());
}
}
}
`
This should create a file called "SO example, but when I search for that file on my computer, it doesn't show up. I am using Netbeans btw. Does anyone know what might be the problem?
Thanks,
Paul

I just ran your code on my computer and everything seems to work fine. I am running Ubuntu and eclipse, however.
I would recommend checking where NetBeans stores your project directory and check in there. Don't forget to refresh the directory if you are looking for the file from the directory hierarchy manager within NetBeans.

Reading metadata of mp3 file in Java - file not found exception

Well, my code is as below. I'd like to know why there's always an exception. The mp3 file is in the same directory as the test.java file. What am I doing wrong? Also, how do I read mp3 files from say my Music Library : path - Libraries\Music
import java.io.IOException;
import com.mpatric.mp3agic.ID3v1;
import com.mpatric.mp3agic.InvalidDataException;
import com.mpatric.mp3agic.Mp3File;
import com.mpatric.mp3agic.UnsupportedTagException;
public class test
{
public static void main(String args[])
{
Mp3File mp3file = null;
try {
mp3file = new Mp3File("dom.mp3");
} catch (UnsupportedTagException | InvalidDataException | IOException e) {
// TODO Auto-generated catch block
//e.printStackTrace();
System.out.println("File not found.");
}
if (mp3file.hasId3v1Tag()) {
ID3v1 id3v1Tag = mp3file.getId3v1Tag();
System.out.println("Track: " + id3v1Tag.getTrack());
System.out.println("Artist: " + id3v1Tag.getArtist());
System.out.println("Title: " + id3v1Tag.getTitle());
System.out.println("Album: " + id3v1Tag.getAlbum());
System.out.println("Year: " + id3v1Tag.getYear());
System.out.println("Genre: " + id3v1Tag.getGenre() + " (" + id3v1Tag.getGenreDescription() + ")");
System.out.println("Comment: " + id3v1Tag.getComment());
}
}
}
Exception
java.io.FileNotFoundException: File not found dom.mp3
at com.mpatric.mp3agic.FileWrapper.init(FileWrapper.java:26)
at com.mpatric.mp3agic.FileWrapper.<init>(FileWrapper.java:19)
at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:53)
at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:41)
at test.main(test.java:13)
File not found.
Exception in thread "main" java.lang.NullPointerException at test.main(test.java:19)
The mpatric package is 3rd party. I'm guessing that works fine.
What do you mean by "same directory as you run your java process from"? Can you give me a for instance, please?

Printing this:
System.out.println("File not found.");
is misleading, given this:
catch (UnsupportedTagException | InvalidDataException | IOException e)
You need to dump the exception (e.printStackTrace() to determine the real issue).
Your .mp3 file is in the same directory as your .java file. But that's not relevant. Is it in the same directory as where you run your java process from ? That's where it needs to be.
e.g.
$ cd /mydir
$ java com.whatever.TestJava
In the above your .mp3 file needs to be in the /mydir directory

As mentioned by #BrianAgnew, you should dump your Exception.
UPDATE
Try this and select your file you want to use:
public class Test
{
public static void main(String args[])
{
Mp3File mp3file = null;
try {
JFileChooser jfc = new JFileChooser();
int fileResult = jfc.showOpenDialog(null);
if (fileResult == JFileChooser.APPROVE_OPTION) {
String path = jfc.getSelectedFile().getPath();
mp3file = new Mp3File(path);
if (mp3file!=null && mp3file.hasId3v1Tag()) {
ID3v1 id3v1Tag = mp3file.getId3v1Tag();
System.out.println("Track: " + id3v1Tag.getTrack());
System.out.println("Artist: " + id3v1Tag.getArtist());
System.out.println("Title: " + id3v1Tag.getTitle());
System.out.println("Album: " + id3v1Tag.getAlbum());
System.out.println("Year: " + id3v1Tag.getYear());
System.out.println("Genre: " + id3v1Tag.getGenre() + "("+id3v1Tag.getGenreDescription() + ")");
System.out.println("Comment: " + id3v1Tag.getComment());
} else {
System.out.println("The mp3 file does not exists or does not have a ID3v1Tag");
}
}
} catch (UnsupportedTagException | InvalidDataException | IOException e) {
System.err.println("File not found.");
e.printStackTrace();
}
}
}

Solved it! System.out.println(System.getProperty("user.dir")); Pasted that into my code, found out the root dir. Apparently it's on the same level as the src and bin folders. Pasted the file there and it works like a charm now.
Alright, if anyone was wondering if you can change the home directory, you can't.
If you want to access another folder, you'll have to resort to directory traversal. Say your music file "Ride the Lightning.mp3" is in C:\Users\"Your Username"\Music\
Then to read that you'll have to do something like this:
mp3file = new Mp3File("../../../Music/Misc/Ride the Lightning.mp3");
Cheers to Brian and Chasmo for the helpful posts.