关于路径选择对话框

我想用在java应用程序中放置一个路径选择对话框,哪有现成的东西可以用? 问题点数：50、回复次数：2Top

1 楼smallnest（公子小巢）回复于 2002-05-30 17:26:33 得分 25

JFileChooser   yours=new   JFileChooser();  
  yours.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);  
  youes.showOpenDialog(parent);  
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2 楼GJA106（中文字符）回复于 2002-05-30 18:25:34 得分 25

\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);  
  }  
  }  
   
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相关问题

• insets
• previewpanel
• 对话框
• jfilechooser
• imagepreviewer
• previewer
• icon
• borderlayout
• import
• size

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