extensionfilter.java

Java Classic Examples是我买的两本书：《JAVA经典实例》和《java入门经典源代码》里边附送光盘里带的源码

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

public class ExtensionFilter extends FileFilter
{
  public ExtensionFilter(String ext, String descr)
  {
    extension = ext.toLowerCase();             // Store the extension as lower case
    description = descr;                       // Store the description
  }

  public boolean accept(File file)
  {
   return (file.isDirectory() || file.getName().toLowerCase().endsWith(extension));
  }

  public String getDescription()
  {
    return description;
  }

  private String description;                  // Filter description
  private String extension;                    // File extension, including .
}