- Swing Programming Examples
- Example - Home
- Example - Environment Setup
- Example - Borders
- Example - Buttons
- Example - CheckBoxes
- Example - Combo Boxes
- Example - Color Choosers
- Example - Dialogs
- Example - Editor Panes
- Example - File Choosers
- Example - Formatted TextFields
- Example - Frames
- Example - Lists
- Example - Layouts
- Example - Menus
- Example - Password Fields
- Example - Progress Bars
- Example - Scroll Panes
- Example - Sliders
- Example - Spinners
- Example - Tables
- Example - Toolbars
- Example - Tree
- Swing Useful Resources
- Swing - Quick Guide
- Swing - Useful Resources
- Swing - Discussion
Swing Examples - Open file Dialog to select only Images
Following example showcase how to show a Open File dialog to select only images in swing based application.
We are using the following APIs.
JFileChooser − To create a file chooser.
JFileChooser.addChoosableFileFilter(ImageFilter) − To add a custom file filter for Images only.
JFileChooser.setAcceptAllFileFilterUsed(true) − To disable the default filters.
Example
import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.LayoutManager; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.filechooser.FileFilter; public class SwingTester { public static void main(String[] args) { createWindow(); } private static void createWindow() { JFrame frame = new JFrame("Swing Tester"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); createUI(frame); frame.setSize(560, 200); frame.setLocationRelativeTo(null); frame.setVisible(true); } private static void createUI(final JFrame frame){ JPanel panel = new JPanel(); LayoutManager layout = new FlowLayout(); panel.setLayout(layout); JButton button = new JButton("Click Me!"); final JLabel label = new JLabel(); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { JFileChooser fileChooser = new JFileChooser(); fileChooser.addChoosableFileFilter(new ImageFilter()); fileChooser.setAcceptAllFileFilterUsed(false); int option = fileChooser.showOpenDialog(frame); if(option == JFileChooser.APPROVE_OPTION){ File file = fileChooser.getSelectedFile(); label.setText("File Selected: " + file.getName()); }else{ label.setText("Open command canceled"); } } }); panel.add(button); panel.add(label); frame.getContentPane().add(panel, BorderLayout.CENTER); } } class ImageFilter extends FileFilter { public final static String JPEG = "jpeg"; public final static String JPG = "jpg"; public final static String GIF = "gif"; public final static String TIFF = "tiff"; public final static String TIF = "tif"; public final static String PNG = "png"; @Override public boolean accept(File f) { if (f.isDirectory()) { return true; } String extension = getExtension(f); if (extension != null) { if (extension.equals(TIFF) || extension.equals(TIF) || extension.equals(GIF) || extension.equals(JPEG) || extension.equals(JPG) || extension.equals(PNG)) { return true; } else { return false; } } return false; } @Override public String getDescription() { return "Image Only"; } String getExtension(File f) { String ext = null; String s = f.getName(); int i = s.lastIndexOf('.'); if (i > 0 && i < s.length() - 1) { ext = s.substring(i+1).toLowerCase(); } return ext; } }
Output
swingexamples_filechoosers.htm
Advertisements
To Continue Learning Please Login
Login with Google