如何显示图像（所有主要格式），由JFileChooser在Java中选择

Question

I am developing an image editing app, so want to display an image selected by JFileChooser , so what would be best approach so that it can display all formats jpg , png , gif etc. OpenButton is used for invocation of filechooser.

private void OpenActionPerformed(java.awt.event.ActionEvent evt) {
       int returnVal = fileChosser.showOpenDialog(this);
       if (returnVal == JFileChooser.APPROVE_OPTION) {
           File file = fileChosser.getSelectedFile();
           // What to do with the file
           // I want code for this part
           try {
             //code that might create an exception 
           } 
           catch (Exception e1) {
             e.printStackTrace();
           }
       }
}

Answer 1

The easiest way is probably to create an ImageIcon from the URL of the file (or from the content of the file as bytes, or from the file name), and to wrap this ImageIcon into a JLabel:

iconLabel.setIcon(new ImageIcon(file.toURI().toURL()));

But if your app is supposed to edit the image, then you'll have to learn how to manipulate java.awt.Image instances, and the easiest way won't be sufficient.