Re: How do I write an ImageIcon object into a file on my computer?
phillip.s.powell@gmail.com wrote:
I am about to throw in the towel on Java at this point! Too many
questions!
How in the world do you do this one (again, in my native PHP it's
extremely easy:
$fileID = @fopen('/path/to/your/new/file', 'wb');
if ($fileID) {
@fputs($fileID,
file_get_contents('http://www.domain.com/someimage.jpg'));
@fclose($fileID);
}
[snip]
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 = in.read(b)) != -1) {
out.write(b, 0, len);
}
out.close();
}
public static void toFile(File file, Object contents) throws
IOException {
FileOutputStream out = new FileOutputStream(file);
out.write(contents.getBytes());
}
}
This of course fails, but I have absolutely no idea how to get the
ImageIcon object "contents" to write into the file "/path/to/my/file".
Phil
Hmm, are you trying to save an image (such as a jpeg or gif), or
actually trying to serialize the ImageIcon object to a file? It looks
like you are simply trying do download data from a URL (thats what your
PHP code does). your toFile method can not do that if you have just any
Object. Only certain ones allow you to get at the byte[] contents. If
What doesn't work about your download method?
Other than the fact that you forget call "in.close()" in a failsafe
manor (see below)
If that is all you really want to do, then it is the best way.
However, if you have an Image object, look into ImageIO:
<http://java.sun.com/j2se/1.5.0/docs/api/javax/imageio/ImageIO.html> It
might do what you want.
-- This is a safer way to save a binary file from a URL:
public static void download(URL url, File file) throws IOException {
final InputStream in = url.openStream();
try {
final OutputStream out = new FileOutputStream(file);
try {
final byte[] b = new byte[1024];
int len;
while((len = in.read(b)) != -1) {
out.write(b, 0, len);
}
} finally {
out.close();
}
} finally {
in.close();
}
}