How to find a if a file exists by extention only?

[Maja Gralewska]

Hi all, im trying to find a file using only the extension irrelevant of what the name is but i cant seem to get it to work.
Here is my code, thanks.

    CFileClientController cfcc = new CFileClientController();
						  String location = "/opt/jboss-4.0.1sp1/server/default/OUTPUT/";
						  try{
							  
						  
							  if(cfcc.exists(location + ".AUT")) //*.AUT, %.AUT doesn't work either
							  {
								  JOptionPane.showMessageDialog(desktopPane,"Yay found a file with the extension .AUT");
							  }
							  else
							  {
								  JOptionPane.showMessageDialog(desktopPane,"Not Found");
							  }
						  }catch(Exception ex)
						  {
							 ex.printStackTrace();
						  }	

[Wouter Oet]

You can use a FilenameFilter in combination with File.list(FilenameFilter)

[Rob Spoor]

Check out java.io.File and its listFiles() methods. Using a FileFilter that checks if a name ends with .aut (case insensitive) will prevent other files being returned.

[Maja Gralewska]

Thanks guys i got that working but now i cant get it to read the file even if i pass it the static directory and name, any idea what im doing wrong? thanks

   
String location = sep+ "opt"+ sep + "jboss-4.0.1sp1" + sep + "server"+ sep+ "default"+sep+"OUTPUT"+sep +"TEST.AUT";
FileReader input = new FileReader(location);
									  BufferedReader bufRead = new BufferedReader(input);
									  
									  String line;    // String that holds current file line
									  int count = 0;  // Line number of count 

									  line = bufRead.readLine();
									  count++;

									  while (line != null){
										  System.out.println(count+": "+line);
										  line = bufRead.readLine();
										  count++;
									  }
            
									  bufRead.close();

//  method two

 FileInputStream fstream = new FileInputStream(location);
								    DataInputStream in = new DataInputStream(fstream);
								        BufferedReader br = new BufferedReader(new InputStreamReader(in));
								    String strLine;
								    while ((strLine = br.readLine()) != null)   {
								      System.out.println (strLine);
								    }
								    //Close the input stream
								    in.close();
 

I have tried a few other ways but cant seem to get the data. It throws me a file not found exception, even though before it gets to the above code i do a check to see if the file exists to which it returns true. I have also tried a .txt file with the same results:

  if(cfcc.exists(location))
							  {
//above code
}  

Data in the file(TEST.AUT) is as follows:

Maja
Gralewska
This is a test
Does it print out line by line

[Wouter Oet]

Why are you using a CFileClientController (whatever that is) to check if the file exists and not just a File?

[Maja Gralewska]

Hey, thanks for all the help its working perfectly now. Oh sorry bout that CFile works exactly like File only its a slightly customized method because we have to work through client controller, model, bean & persistence.