2009年6月18日

来源：互联网发布：htc windows phone 8x 编辑：程序博客网时间：2024/05/17 06:22

FileChooser的使用：

http://czwangelo.javaeye.com/blog/92144（转载）

package org.song.test;

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class SimpleFileChooser extends JFrame {

    public SimpleFileChooser( ) {
     super("File Chooser Test Frame");
     setSize(350, 200);
     setDefaultCloseOperation(EXIT_ON_CLOSE);

     Container c = getContentPane( );
     c.setLayout(new FlowLayout( ));

     JButton openButton = new JButton("Open");
     JButton saveButton = new JButton("Save");
     JButton dirButton = new JButton("Pick Dir");
     final JLabel statusbar =
                  new JLabel("Output of your selection will go here");

     // Create a file chooser that opens up as an Open dialog.
     openButton.addActionListener(new ActionListener( ) {
       public void actionPerformed(ActionEvent ae) {
         JFileChooser chooser = new JFileChooser( );
         chooser.setMultiSelectionEnabled(true);
         int option = chooser.showOpenDialog(SimpleFileChooser.this);
         if (option == JFileChooser.APPROVE_OPTION) {
           File[] sf = chooser.getSelectedFiles( );
           String filelist = "nothing";
           if (sf.length > 0) filelist = sf[0].getName( );
           for (int i = 1; i < sf.length; i++) {
             filelist += ", " + sf[i].getName( );
           }
           statusbar.setText("You chose " + filelist);
         }
         else {
           statusbar.setText("You canceled.");
         }
       }
     });

     // Create a file chooser that opens up as a Save dialog.
     saveButton.addActionListener(new ActionListener( ) {
       public void actionPerformed(ActionEvent ae) {
         JFileChooser chooser = new JFileChooser( );
         int option = chooser.showSaveDialog(SimpleFileChooser.this);
         if (option == JFileChooser.APPROVE_OPTION) {
           statusbar.setText("You saved " + ((chooser.getSelectedFile( )!=null)?
                             chooser.getSelectedFile( ).getName( ):"nothing"));
         }
         else {
           statusbar.setText("You canceled.");
         }
       }
     });

     // Create a file chooser that allows you to pick a directory
     // rather than a file.
     dirButton.addActionListener(new ActionListener( ) {
       public void actionPerformed(ActionEvent ae) {
         JFileChooser chooser = new JFileChooser( );
         chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
         int option = chooser.showOpenDialog(SimpleFileChooser.this);
         if (option == JFileChooser.APPROVE_OPTION) {
           statusbar.setText("You opened " + ((chooser.getSelectedFile( )!=null)?
                             chooser.getSelectedFile( ).getName( ):"nothing"));
         }
         else {
           statusbar.setText("You canceled.");
         }
       }
     });

     c.add(openButton);
     c.add(saveButton);
     c.add(dirButton);
     c.add(statusbar);
   }

   public static void main(String args[]) {
     SimpleFileChooser sfc = new SimpleFileChooser( );
     sfc.setVisible(true);
   }
}

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