Java Swing - 如何为JFileChooser创建FileFilter

import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;

public class Main {

    public static void main(String[] args) {
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setAcceptAllFileFilterUsed(false);
        FileNameExtensionFilter filter = new FileNameExtensionFilter("MPEG3 songs", "mp3");
        fileChooser.addChoosableFileFilter(filter);
        fileChooser.showOpenDialog(null);

    }
}