import java.io.File; import javax.swing.ImageIcon; /* Utils.java is a 1.4 example used by FileChooserDemo2.java. */ public class Utils { 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"; /* * Get the extension of a file. */ public static 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; } /** Returns an ImageIcon, or null if the path was invalid. */ protected static ImageIcon createImageIcon(String path) { java.net.URL imgURL = Utils.class.getResource(path); if (imgURL != null) { return new ImageIcon(imgURL); } else { System.err.println("Couldn't find file: " + path); return null; } } }