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Thread: JFileChoose and FileOutputStream, nothing is being saved

  1. #1
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    Default JFileChoose and FileOutputStream, nothing is being saved

    Hey I'm pretty lost, hence my username, but I have this code here:

    package downloadtesting;
    import java.io.*;
    import java.net.*;
    import javax.swing.JFileChooser;
     
    public class FileDownLoader {
        private JFileChooser jfc;
        public boolean saveUrl(String urlString) throws MalformedURLException, IOException {
            BufferedInputStream in = null;
            FileOutputStream fout = null;
        	jfc = new JFileChooser();
            if(jfc.showSaveDialog(null) == JFileChooser.APPROVE_OPTION){
                try {
                    File selectedFile = jfc.getSelectedFile();
                    in = new BufferedInputStream(new URL(urlString).openStream());
                    fout = new FileOutputStream(selectedFile);
                    byte data[] = new byte[1024];
                    int count;
                    while ((count = in.read(data, 0, 1024)) != -1) {
                        fout.write(data, 0, count);
                    }
                }
                finally {
                    if (in != null)
                            in.close();
                    if (fout != null)
                            fout.close();
                }
                return true;
            } else {
                return false;
            }
        }
    }

    Which I'm trying to use to download a .jar file from my shell account for testing, however nothing is even being saved.

    So what I'm trying to do is have this class/method download a jar file from my webhost and save it to where I specify with JFileChooser.showSaveDilog, however nothings even being saved, stuck and help much appreciated.


  2. #2
    Administrator copeg's Avatar
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    Default Re: JFileChoose and FileOutputStream, nothing is being saved

    Are there any exceptions being thrown? If so, please post the full error message

  3. #3
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    Default Re: JFileChoose and FileOutputStream, nothing is being saved

    Quote Originally Posted by lost View Post
    Hey I'm pretty lost, hence my username, but I have this code here:

    package downloadtesting;
    import java.io.*;
    import java.net.*;
    import javax.swing.JFileChooser;
     
    public class FileDownLoader {
        private JFileChooser jfc;
        public boolean saveUrl(String urlString) throws MalformedURLException, IOException {
            BufferedInputStream in = null;
            FileOutputStream fout = null;
        	jfc = new JFileChooser();
            if(jfc.showSaveDialog(null) == JFileChooser.APPROVE_OPTION){
                try {
                    File selectedFile = jfc.getSelectedFile();
                    in = new BufferedInputStream(new URL(urlString).openStream());
                    fout = new FileOutputStream(selectedFile);
                    byte data[] = new byte[1024];
                    int count;
                    while ((count = in.read(data, 0, 1024)) != -1) {
                        fout.write(data, 0, count);
                    }
                }
                finally {
                    if (in != null)
                            in.close();
                    if (fout != null)
                            fout.close();
                }
                return true;
            } else {
                return false;
            }
        }
    }

    Which I'm trying to use to download a .jar file from my shell account for testing, however nothing is even being saved.

    So what I'm trying to do is have this class/method download a jar file from my webhost and save it to where I specify with JFileChooser.showSaveDilog, however nothings even being saved, stuck and help much appreciated.
    I'm wishing I knew how to save files too. It must be very advanced Java to save them, because I've tried lots of things.



    How do you write a JPanel to a file?

  4. #4
    Member Darryl.Burke's Avatar
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    Default Re: JFileChoose and FileOutputStream, nothing is being saved

    How do you write a JPanel to a file?
    You really should start a separate thread for that question. Suffice to say that JPanel implements Serializable. And take a look at ObjectOutputStream.

    db

  5. #5
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    Default Re: JFileChoose and FileOutputStream, nothing is being saved

    Actually, the code works fine... The file I was trying to grab I forgot I had changed the name, sorry about this..