打开JFileChooser并返回所选文件的Swing ActionListener

Posted 2021-02-26

A Swing ActionListener that opens a JFileChooser and returns the selected file.

/** This action creates and shows a modal save-file dialog. */
public abstract static class FileAction extends AbstractAction {
 
	private final JFileChooser chooser = new JFileChooser();
	private final JPanel parent;
 
	FileAction(JPanel parent) {
		this.parent = parent;
	}
 
	@Override public void actionPerformed(ActionEvent evt) {
		// Show dialog; won't return until dialog is closed:
		chooser.showSaveDialog(parent);
 
		// Get the selected file
		File file = chooser.getSelectedFile();
		if (file != null) {
			handleFile(file);
		}
	}
 
	public abstract void handleFile(File file);
}
 
...
 
myButton.addActionListener(new FileAction(getMainPanel()) {
	@Override public void handleFile(File file) {
		// do whatever you want with the file...
	}
});