Using JFileChooser to select only jpg, bmp, and gif files, then create ImageIcon

[Koji]

Basically, I have a GUI class where you have to use the JFileChooser class to select a jpg, bmp, or gif file. Then, that file is displayed on a jLabel as an Icon. The next step is taking that file chosen, turning it to grey scale, then displaying that as an Icon on another jLabel so that the user can see both of them at once.

I'm pretty sure I can do the turning to grey scale. My FileChooser is working in that I can choose a file from my computer, but I still haven't figured out how to use the filter to only allow jpg, bmp, and gif files, nor do I know how to use the file to display it as an Icon on the jLabels.

Any help would be appreciated. Thanks.

Koji

[r035198x]

Basically, I have a GUI class where you have to use the JFileChooser class to select a jpg, bmp, or gif file. Then, that file is displayed on a jLabel as an Icon. The next step is taking that file chosen, turning it to grey scale, then displaying that as an Icon on another jLabel so that the user can see both of them at once.

I'm pretty sure I can do the turning to grey scale. My FileChooser is working in that I can choose a file from my computer, but I still haven't figured out how to use the filter to only allow jpg, bmp, and gif files, nor do I know how to use the file to display it as an Icon on the jLabels.

Any help would be appreciated. Thanks.

Koji

http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html#filters

[Koji]

Thanks, but I already figured out how to do the filters and Filechooser by the time I checked your post. That page for which you posted the URL was the page that was essential in figuring that out.

I never figured out how to save the file chosen and convert it to grayscale to create another icon of the grayscale, but I found a way to put a gray filter over the icon, which I'm hoping won't count off too much. Heh.

[mechandrasekhar]

I'm pretty sure I can do the turning to grey scale. My FileChooser is working in that I can choose a file from my computer, but I still haven't figured out how to use the filter to only allow jpg, bmp, and gif files, nor do I know how to use the file to display it as an Icon on the jLabels.


This is very Simple process to select only jpg,bmp or gif files. What you need to do is just filter the files before you getting the values from JFileChooser.

JFileChooser chooser=new JFileChooser();
FileNameExtensionFilter filter=new FileNameExtensionFilter("images", "jpg","gif","png");
        fileChooser.setFileFilter(filter);
        int returnVal=fileChooser.showOpenDialog(null);
        File f=fileChooser.getSelectedFile();
        if(returnVal==JFileChooser.APPROVE_OPTION)
        {
if(f.getName().endsWith(".jpg")||f.getName().endsWith(".gif"))
            {
JOptionPane.showMessageDialog(null,"Image file");
}
else
JOptionPane.showMessageDialog(null,"select .jpg,.bmp or. gif");