1 package com.soft.test; 2  3 import javax.swing.*; 4 import javax.swing.filechooser.*; 5 import java.awt.event.*; 6 import java.io.FileFilter; 7  8 public class SplashDemo extends JFrame implements ActionListener { 9     private JButton jb = null;10 11     public SplashDemo() {12         jb = new JButton("打开");13         jb.addActionListener(this);14 15         this.add(jb);16         this.setSize(400, 300);17         this.setResizable(false);18         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);19         this.setVisible(true);20     }21 22     public static void main(String[] args) {23 24         SplashDemo s = new SplashDemo();25     }26 27     public void actionPerformed(ActionEvent e) {28         JFileChooser jf = new JFileChooser();29         jf.setToolTipText("打开");30         FileNameExtensionFilter ff = new FileNameExtensionFilter(31                 "图像文件(jpg/gif)", "jpg", "jpeg", "gif");32         jf.setFileFilter(ff);33         jf.showOpenDialog(this);34 35     }36 37 }