Java tutorial
import java.io.File; import javax.swing.JFileChooser; import javax.swing.JOptionPane; import javax.swing.SwingUtilities; import javax.swing.UIManager; import javax.swing.filechooser.FileFilter; public class Main { public static void main(String[] args) throws Exception { String[] properties = { "os.name", "java.version", "java.vm.version", "java.vendor" }; for (String property : properties) { System.out.println(property + ": " + System.getProperty(property)); } JFileChooser jfc = new JFileChooser(); jfc.showOpenDialog(null); jfc.addChoosableFileFilter(new FileFilter() { @Override public boolean accept(File f) { return f.isDirectory() || f.getName().toLowerCase().endsWith(".obj"); } @Override public String getDescription() { return "Wavefront OBJ (*.obj)"; } @Override public String toString() { return getDescription(); } }); int result = JOptionPane.showConfirmDialog(null, "Description was 'All Files'?"); UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); SwingUtilities.updateComponentTreeUI(jfc); jfc.showOpenDialog(null); result = JOptionPane.showConfirmDialog(null, "Description was 'All Files'?"); result = JOptionPane.showConfirmDialog(null, "Description was 'All Files'?"); for (UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { UIManager.setLookAndFeel(info.getClassName()); SwingUtilities.updateComponentTreeUI(jfc); break; } } jfc.showOpenDialog(null); result = JOptionPane.showConfirmDialog(null, "Description was 'All Files'?"); } }