收藏一个winform例子

import java.awt.FileDialog;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Main extends JFrame{   
 Main(){
        JButton b = new JButton("Click me");
        b.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                FileDialog f =
                    new FileDialog(Main.this,"test",FileDialog.LOAD);
               
                f.setVisible(true);
            }
        });
        getContentPane().add(b);  
    }
    public static void main(String[] args){       
     Main tsd = new Main();
        tsd.pack();
        tsd.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        tsd.setVisible(true);       
    }
}