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(400, 300);
        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);

    }

}