How to Add File Filter for JFileChooser Dialog Java Swing
In Swing, we can do that by using methodaddChoosableFileFilter(FileFilter filter) of the class JFileChooser.
Create a class that extends FileFilter abstract class and overrides its two methods:
boolean accept(File f): returns true if the file f satisfies a filter condition. The condition here is the extension of the file.
String getDescription(): returns a description which is displayed in the dialog’s Files of type section.