myfilterchooser.java

来自「java swing 开发代码」· Java 代码 · 共 54 行

// MyFilterChooser.java
// Just a simple example to see what it takes to make one of these filters work.
//
package	jswing.ch12;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MyFilterChooser extends JFrame {
  public MyFilterChooser() {
    super("Filter Test Frame");
    setSize(350, 200);
    setDefaultCloseOperation(EXIT_ON_CLOSE);

    Container c = getContentPane();
    c.setLayout(new FlowLayout());
    
    JButton openButton = new JButton("Open");
    final JLabel statusbar = 
                 new JLabel("Output of your selection will go here");

    openButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ae) {
        String[] pics = new String[] {"gif", "jpg", "tif"};
        String[] audios = new String[] {"au", "aiff", "wav"};
        JFileChooser chooser = new JFileChooser();
        chooser.addChoosableFileFilter(new SimpleFileFilter(pics, 
                                       "Images (*.gif, *.jpg, *.tif)"));
        chooser.addChoosableFileFilter(new SimpleFileFilter(".MOV"));
        chooser.addChoosableFileFilter(new SimpleFileFilter(audios, 
                                       "Sounds (*.aiff, *.au, *.wav)"));
        int option = chooser.showOpenDialog(MyFilterChooser.this);
        if (option == JFileChooser.APPROVE_OPTION) {
          if (chooser.getSelectedFile()!=null) 
            statusbar.setText("You chose " + 
                            chooser.getSelectedFile().getName());
        }
        else {
          statusbar.setText("You canceled.");
        }
      }
    });

    c.add(openButton);
    c.add(statusbar);
    setVisible(true);
  }

  public static void main(String args[]) {
    MyFilterChooser mfc = new MyFilterChooser();
  }
}