FileNameExtensionFilter文件过滤

 package com.soft.test;

 import javax.swing.*;
 import javax.swing.filechooser.*;
 import java.awt.event.*;
 import java.io.FileFilter;

 public class SplashDemo extends JFrame implements ActionListener {
     private JButton jb = null;

     public SplashDemo() {
         jb = new JButton("打开");
         jb.addActionListener(this);

         this.add(jb);
         this.setSize(, );
         this.setResizable(false);
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         this.setVisible(true);
     }

     public static void main(String[] args) {

         SplashDemo s = new SplashDemo();
     }

     public void actionPerformed(ActionEvent e) {
         JFileChooser jf = new JFileChooser();
         jf.setToolTipText("打开");
         FileNameExtensionFilter ff = new FileNameExtensionFilter(
                 "图像文件(jpg/gif)", "jpg", "jpeg", "gif");
         jf.setFileFilter(ff);
         jf.showOpenDialog(this);

     }

 }