Re: How do I write an ImageIcon object into a file on my computer?

"" <>
17 Jan 2007 06:48:51 -0800
Knute Johnson wrote: wrote:

Thomas Fritsch wrote:

<> wrote:

I hope this makes it more clear:

*update* still fails, can't fix it this time..

Here are my methods

public static void toFile(File file, Object contents) throws
IOException {
       FileOutputStream out = new FileOutputStream(file);

I assume you got the Exception in the line above.
(Unfortunately you missed to post the complete exception stack trace)


   public static void toFile(String filePath, Object contents) throws
IOException {
       File file = new File(filePath);
       toFile(file, contents);

I get this exception thrown:

file:\C:\Documents%20and%20Settings\me\stave.ico (The filename,
directory name, or volume label syntax is incorrect)

The exception says it all: You try to open a file in directory
which, of course, doesn't exist.
What you really want to do, is to open a file in directory
    C:\Documents and Settings\me
I.e. you have to use
    C:\Documents and Settings\me\stave.ico
as filePath in your code above.

Then perhaps this might be a better choice:

 * Created on January 10, 2007, 3:47 PM
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.

package FileTools;


 * @author ppowell-c
public class FileDownloader implements Serializable {

      Why is it Serializable? There is no data.

    /** Creates a new instance of FileDownloader */
    public FileDownloader() {}

      This method is fine.

    public static void download(URL url, File file) throws IOException
        InputStream in = url.openStream();
        FileOutputStream out = new FileOutputStream(file);
        byte[] b = new byte[1024];
        int len;
        while((len = != -1) {
            out.write(b, 0, len);

    public static void download(String path, File file) throws
IOException {
    download(new URL(path), file);

       This will work only if the Object is Serializable

    public static void download(String path, Object contents) throws
IOException {
    ObjectOutputStream out = new ObjectOutputStream(new


What do you think?

I think you aren't listening.

Maybe you need to explain it to someone with ADD as if I were a 10-year
old. Try it that way.

How do you write to a new file anything, like String content or Image
content or Excel spreadsheet content.. anything at all, into a new
file? How do you do it?



Knute Johnson
email s/nospam/knute/

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