, you’ll find a package of helper classes for the
javax.swing.filechooser package contains
several classes for displaying and filtering files.
can be used to create filters for
JFileChooser dialogs. The class contains
only two abstract methods. It’s important to note that extensions are
not the only way to judge a file’s fitness for a particular filter.
The Mac filesystem, for example, can understand the creator of a file
regardless of the file’s name. On Unix systems, you might write a
filter to display only files that are readable by the current
receives this default constructor at compile time; it is not
defined in the class itself.
true if file
f matches this filter. Note
that you must explicitly accept directories (
f.isDirectory( ) == true) if you
want to allow the user to navigate into any subfolders.
Return a short description to appear in the filters pulldown on the chooser. An example would be “Java Source Code” for any .java files.
Figure 12-5 shows a file chooser with custom filters for multimedia file types.
Figure 12-5. A custom set of filters for use with JFileChooser
Here’s the code for the application. Before we make ...