extensionfilefilter.java

酒店管理软件的源代码

import javax.swing.filechooser.FileFilter;
import java.io.File;
import java.util.ArrayList;

public class ExtensionFileFilter extends FileFilter
{
   public void addExtension(String extension)
   {
      if (!extension.startsWith("."))
         extension = "." + extension;
      extensions.add(extension.toLowerCase());
   }

   public void setDescription(String aDescription)
   {
      description = aDescription;
   }

   public String getDescription()
   {
      return description;
   }

   public boolean accept(File f)
   {
      if (f.isDirectory()) return true;
      String name = f.getName().toLowerCase();

      // check if the file name ends with any of the extensions
      for (int i = 0; i < extensions.size(); i++)
         if (name.endsWith((String)extensions.get(i)))
            return true;
      return false;
   }

   private String description = "";
   private ArrayList extensions = new ArrayList();
}