映像IO写不写

Question

basically I am trying to save an image I have edited in a JFrame, so I have a menu with the save item and I have an action listener to set up for the save item and everything works fine, the file chooser comes up and I can select where I would like to save it, only thing is when I hit save, its not there. Here is my code, am I missing something?

 if(e.getSource().equals(Save)){
        JFileChooser keep = new JFileChooser();
        keep.setSelectedFile(new File ("newImage.jpg"));
        FileNameExtensionFilter  filters = new FileNameExtensionFilter("jpeg", "jpg");
        keep.setFileFilter(filters);
        File output = keep.getSelectedFile();

        int count = keep.showSaveDialog(keep);
        BufferedImage out = filteredImage;

        if (count == JFileChooser.CANCEL_OPTION){

        }
        else{
            try{
                ImageIO.write(out, "jpg", output);

                //I put this here to see if I was even reaching the method
                System.out.println("writing method");
            }catch(Exception d){
            }
        }
    }

Answer 1

So, you get a reference to the selectedFile ...

File output = keep.getSelectedFile();

The you show the dialog...

int count = keep.showSaveDialog(keep);
BufferedImage out = filteredImage;

Then you try and save the image...

ImageIO.write(out, "jpg", output);

...wait, what?! Assuming that getSelectedFile isn't null , how do you know where you're actually saving the image?

That process should be reversed slightly...

showSaveDialog
if (accepted) {
    saveFile = getSelectedFile
    ImageIO.write(img, "jpg", saveFile);
}

as a basic psudo code example