I have a Java program to search and load Excel files from the PC to use it in a SAS proyect. Usually works well but when I install it in a server with thousands of folders it takes too long and I would like to do it in seconds, not in 15 minutes.
I think is because JFileChooser try to load all directories and disk (the server has many disks). So I'd like to limit the search to the disk in witch I work. My programme is such that:
private String createProyect() {
JFileChooser fileopen = new JFileChooser();
FileFilter filter = new FileNameExtensionFilter(NEW_PROYECT, EXTENSION_XLS, EXTENSION_XLSX);
fileopen.addChoosableFileFilter(filter);
...}
Maybe I need to use a configuration file but I don't know how.
Perhaps you are looking for FileSystemView ?
If you use it, you will be able to modify the scope of your JFileChooser, like this example shows: Example
Related
Trying to build a little app for sorting through audio files based on some of their properties. Have managed to grab the Sample Rate and Bit Depth using Minim but can't find anything anywhere for getting the Bit Rate?
Happy to look at taking the program to Javascript if needed but just desperate to find a method for detecting bit rate of a given file.
EDIT: Attempted to try and form an equation based off file size but cannot find a method for detecting MP3 file size either.
You can use jaudiotagger
You will need to download the jar, I managed to get it from maven central
Go to Sketch -> Add File... and select the downloaded jar, it should be added in a folder named code within your sketch folder.
Assuming you have placed an mp3 file in your data folder named audio.mp3 the following code should work, printing out the bit rate in the terminal.
import org.jaudiotagger.audio.mp3.*;
import org.jaudiotagger.audio.AudioFileIO;
void setup() {
File f = new File(dataPath("audio.mp3"));
try {
MP3File mp3 = (MP3File) AudioFileIO.read(f);
MP3AudioHeader audioHeader = mp3.getMP3AudioHeader();
println("" + audioHeader.getBitRate());
}
catch(Exception e) {
e.printStackTrace();
}
}
JAudiotagger supports a variety of file formats and you can use the relevant classes and methods for each one of these.
I suggest you take a look at the javadoc. Be careful of the examples though, the one I used in order to answer your question seems to be faulty, as you can see I had to swap getAudioHeader with getMP3AudioHeader.
I have gotten the coding example from here to work.
I can run a .wav file through and get the transcript, however in the example the program never ends until I hit a key:
System.out.println("Press any key to stop");
new Scanner(System.in).nextLine();
That seems to artificially pause everything while the service is being queried.
If I remove those that line, the program jumps through to fast and concludes without waiting for the service to respond.
Question: How do I resume/continue the program with the full transcription without needing to hit a key?
I would like to run this for multiple .wav files transcribing each one after the other. But so far it runs the first one then waits.
I have been scouring the documentation and I have tried multiple things including using recognizer.close(); which I would expect to end the SpeechRecognizer but which seems to do nothing.
Or using result = recognizer.recognizeOnceAsync().get(); which does not transcribe the full file.
Does anyone know of an example of this running multiple files or how to implement that?
Thanks.
You can create a function that will read and return the list of files in your directory:
private static String[] GetFiles(String directory)
{
String[] files = (new File(directory)).list(File::isFile);
return files;
}
Then loop through them to process them, and then transcribe them.
String[] files = GetFiles(args[0]);
for (String file : files)
{
//Your code goes here.
System.out.printf("File %1$s processed" + "\r\n",file);//print out which file has been successfully processed.
}
You could also try using the Batch Transcription feature!
Batch transcription is ideal if you have large amounts of audio in
storage.
The code I'm writing in Java is is close a file left open by the user. So, here is what typically happens: a user is editing an Excel file, they save it, leave it open, and then close the lid on their laptop. The file is still kept open and locked so no one else can edit it. Is there a way to kick them off and unlock the file? When they are using the file, it is "checked out." Here is what shows up:
What checked out looks like: (image)
The following code, interfacing through WinDAV with SharePoint, tells me if a file is locked or not (I know it's not great code, but it works and I've tried several other solutions including Filelock, Apache IO, FileStream, etc.):
String fileName = String.valueOf(node);
File file = new File(fileName);
boolean replaced;
File sameFileName = new File(fileName);
if(file.renameTo(new File(sameFileName + "_UNLOCK"))){
replaced = true; //file is currently not in use
(new File(sameFileName + "_UNLOCK")).renameTo(sameFileName);
}else{
replaced = false; //file is currently in use
}
So, how would I unlock a file now? The only other solution is PowerShell using SharePoint libraries, but that has a whole lot of other problems...
As per the post, you can use the tool Handle, which is a CLI tool to find out which process is locking the file. Once you have the process ID, you can kill that process. I'm not aware of any Java API that would identify the culprit process. For killing the process you can use taskkill, and you can call it using Runtime like this. Both the operation require you app to run at Administrator or above privilege.
I have a program that creates multiple output files e.g. daily_results.txt, overall_results.txt etc.
I want to allow the user to specify the directory that these files will be saved to using JFileChooser.
So if the user selected the directory they wanted their output to be saved to as "C:\temp\". What is the best way to append daily_results.txt to that file object. Is there a more elegant way to do this other than:
File file = new File(userDirectory.getPath() + "daily_results.txt");
Any ideas?
Apologies!
I think this can quite easily be accomplished with the JFileChoosers setSelectedFile method.
I want to make an "Open" and "Save" dialog in java. An example of what I want is in the images below:
Open:
Save:
How would I go about doing this?
You want to use a JFileChooser object. It will open and be modal, and block in the thread that opened it until you choose a file.
Open:
JFileChooser fileChooser = new JFileChooser();
if (fileChooser.showOpenDialog(modalToComponent) == JFileChooser.APPROVE_OPTION) {
File file = fileChooser.getSelectedFile();
// load from file
}
Save:
JFileChooser fileChooser = new JFileChooser();
if (fileChooser.showSaveDialog(modalToComponent) == JFileChooser.APPROVE_OPTION) {
File file = fileChooser.getSelectedFile();
// save to file
}
There are more options you can set to set the file name extension filter, or the current directory. See the API for the javax.swing.JFileChooser for details. There is also a page for "How to Use File Choosers" on Oracle's site:
http://download.oracle.com/javase/tutorial/uiswing/components/filechooser.html
I would suggest looking into javax.swing.JFileChooser
Here is a site with some examples in using as both 'Open' and 'Save'. http://www.java2s.com/Code/Java/Swing-JFC/DemonstrationofFiledialogboxes.htm
This will be much less work than implementing for yourself.
Maybe you could take a look at JFileChooser, which allow you to use native dialogs in one line of code.
You can find an introduction to file dialogs in the Java Tutorials. Java2s also has some example code.
First off, you'll want to go through Oracle's tutorial to learn how to do basic I/O in Java.
After that, you will want to look at the tutorial on how to use a file chooser.
You may also want to consider the possibility of using SWT (another Java GUI library). Pros and cons of each are listed at:
Java Desktop application: SWT vs. Swing