Java For Dummies Quick Reference

JFileChooser Class

Package: javax.swing

The JFileChooser class lets you display standard Open and Save dialog boxes similar to the ones you’ve seen in other GUI applications. Figure 5-4 shows an Open dialog box created by JChooser.

Figure 5-4

The result returned by the showOpenDialog method indicates whether the user chose to open a file or click Cancel, and the JFileChooser class provides a handy getSelectedFile method that you can use to get a File object for the file selected by the user.

The JFileChooser class doesn’t actually open or save a file selected by the user; instead, it returns a File object for the file the user selects. Your program has the task of opening or saving the file.

Fields

Field	Description
static int CANCEL_OPTION	Returned by the showDialog method if the user cancels
static int APPROVE_OPTION	Returned by the showDialog method if the user selects a file
static int ERROR_OPTION	Returned by the showDialog method if an error occurs
static int FILES_ONLY	Used by the setFileSelection Mode method to indicate that the dialog box should show files only
static int DIRECTORIES_ONLY	Used by the setFileSelection Mode method to indicate that the dialog box should show directories only
static int FILES_AND_DIRECTORIES