JFileChooser.getFileFilter() has the following syntax.
public FileFilter getFileFilter()
In the following code shows how to use JFileChooser.getFileFilter() method.
/*from w w w .jav a 2s . com*/ import java.awt.BorderLayout; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.filechooser.FileFilter; public class Main{ public static void main(String[] a) { JFrame frame = new JFrame("JFileChooser Popup"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JFileChooser fileChooser = new JFileChooser("."); FileFilter f= fileChooser.getFileFilter(); frame.add(fileChooser, BorderLayout.CENTER); frame.pack(); frame.setVisible(true); } }