关于路径选择对话框

Question

JFileChooser yours=new JFileChooser();
yours.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
youes.showOpenDialog(parent);

Answer 1

\j2sdk1.4.0\demo\jfc\FileChooserDemo这个例子应该能满足你。package pGComponent;import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
import java.beans.*;/**
 * <p>Title: 多文档</p>
 * <p>Description: 测试java多文档的实现</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */public class ViewFileChoose extends JFileChooser
{
ImagePreviewer previewer = new ImagePreviewer();
public String c ="name";
public  String name = "aaaa";
public ViewFileChoose()
{
super("FileChoose Components");
setAccessoryComponent();
this.showOpenDialog(null);
}
private void setAccessoryComponent()
{
JPanel previewPanel = new JPanel(); previewPanel.setLayout(new BorderLayout());
previewPanel.add(new JLabel("Image Previewer",
SwingConstants.CENTER),
BorderLayout.NORTH);
previewPanel.add(previewer, BorderLayout.CENTER);
previewer.setPreferredSize(new Dimension(200,0));
previewer.setBorder(BorderFactory.createEtchedBorder()); this.setAccessory(previewPanel);//设置打开文件对话框的附属组件
//new ImagePreviewerAccessoryAdapter(this, previewer);;
this.addPropertyChangeListener(new PropertyChangeListener()
{
public void propertyChange(PropertyChangeEvent e)
{
if(e.getPropertyName().equals( JFileChooser.SELECTED_FILE_CHANGED_PROPERTY))
{
previewer.update((File)e.getNewValue());
}
}
});
}}class ImagePreviewer extends JComponent
{
private ImageIcon icon; public void update(File file)
{
Dimension size = getSize();
Insets insets = getInsets();
System.err.println(insets); icon = new ImageIcon(file.getPath()); icon.setImage(icon.getImage().getScaledInstance(
size.width - insets.left - insets.right,
size.height - insets.top - insets.bottom,
Image.SCALE_SMOOTH)); if(isShowing())
{
repaint();
}
}
public void paintComponent(Graphics g)
{
Insets insets = getInsets(); super.paintComponent(g); if(icon != null)
icon.paintIcon(this, g, insets.left, insets.top);
}
}